./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC --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 a747c3e70b2dac762cd875ff4c6b8c1b6f4dc1a373b46f7848c57180a86a2166 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:44:14,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:44:14,371 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:44:14,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:44:14,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:44:14,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:44:14,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:44:14,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:44:14,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:44:14,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:44:14,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:44:14,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:44:14,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:44:14,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:44:14,432 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:44:14,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:44:14,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:44:14,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:44:14,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:44:14,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:44:14,435 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:44:14,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:44:14,435 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:44:14,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:14,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:14,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:14,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:14,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:44:14,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:14,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:14,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:14,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:14,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:44:14,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:44:14,438 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:44:14,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:44:14,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:44:14,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:44:14,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:44:14,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:44:14,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:44:14,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:44:14,440 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_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC 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 -> a747c3e70b2dac762cd875ff4c6b8c1b6f4dc1a373b46f7848c57180a86a2166 [2024-11-23 23:44:14,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:44:14,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:44:14,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:44:14,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:44:14,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:44:14,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:44:18,533 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/ba668d0a4/78c5182f7fee4cb7a838c8af32dba9b6/FLAGc74e2f0e7 [2024-11-23 23:44:18,937 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:44:18,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:44:18,948 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/ba668d0a4/78c5182f7fee4cb7a838c8af32dba9b6/FLAGc74e2f0e7 [2024-11-23 23:44:18,966 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/ba668d0a4/78c5182f7fee4cb7a838c8af32dba9b6 [2024-11-23 23:44:18,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:44:18,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:44:18,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:18,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:44:18,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:44:18,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:18" (1/1) ... [2024-11-23 23:44:18,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454fb1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:18, skipping insertion in model container [2024-11-23 23:44:18,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:18" (1/1) ... [2024-11-23 23:44:19,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:44:19,199 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_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i[917,930] [2024-11-23 23:44:19,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:19,384 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:44:19,399 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_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i[917,930] [2024-11-23 23:44:19,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:19,534 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:44:19,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19 WrapperNode [2024-11-23 23:44:19,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:19,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:19,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:44:19,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:44:19,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,646 INFO L138 Inliner]: procedures = 27, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 537 [2024-11-23 23:44:19,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:19,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:44:19,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:44:19,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:44:19,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,728 INFO L175 MemorySlicer]: Split 140 memory accesses to 6 slices as follows [2, 70, 25, 7, 29, 7]. 50 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 3, 1, 2, 1]. The 33 writes are split as follows [0, 23, 4, 3, 2, 1]. [2024-11-23 23:44:19,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,750 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:44:19,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:44:19,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:44:19,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:44:19,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (1/1) ... [2024-11-23 23:44:19,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:19,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:44:19,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:44:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:44:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:44:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:44:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:44:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:44:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:44:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:44:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:44:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:44:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:44:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:44:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:44:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:44:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:44:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:44:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:44:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:44:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:44:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:44:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:44:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:44:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:44:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:44:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:44:20,133 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:44:20,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:44:21,040 INFO L? ?]: Removed 121 outVars from TransFormulas that were not future-live. [2024-11-23 23:44:21,041 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:44:21,056 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:44:21,057 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:44:21,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:21 BoogieIcfgContainer [2024-11-23 23:44:21,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:44:21,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:44:21,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:44:21,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:44:21,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:44:18" (1/3) ... [2024-11-23 23:44:21,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c849476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:21, skipping insertion in model container [2024-11-23 23:44:21,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:19" (2/3) ... [2024-11-23 23:44:21,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c849476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:21, skipping insertion in model container [2024-11-23 23:44:21,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:21" (3/3) ... [2024-11-23 23:44:21,070 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:44:21,091 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:44:21,094 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-85.i that has 2 procedures, 131 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:44:21,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:44:21,184 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;@78cedaf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:44:21,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:44:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:44:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:44:21,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:21,213 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:21,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:21,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash -632733008, now seen corresponding path program 1 times [2024-11-23 23:44:21,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:21,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432163199] [2024-11-23 23:44:21,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-23 23:44:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432163199] [2024-11-23 23:44:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432163199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467539651] [2024-11-23 23:44:21,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:21,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:21,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:44:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:22,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:44:22,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-23 23:44:22,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:44:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467539651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:22,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:44:22,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:44:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497075371] [2024-11-23 23:44:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:22,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:44:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:22,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:44:22,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:44:22,354 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:44:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:22,406 INFO L93 Difference]: Finished difference Result 255 states and 399 transitions. [2024-11-23 23:44:22,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:44:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2024-11-23 23:44:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:22,417 INFO L225 Difference]: With dead ends: 255 [2024-11-23 23:44:22,417 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 23:44:22,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:44:22,425 INFO L435 NwaCegarLoop]: 184 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, 184 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 [2024-11-23 23:44:22,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 23:44:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-23 23:44:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:44:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2024-11-23 23:44:22,486 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 179 [2024-11-23 23:44:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:22,486 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2024-11-23 23:44:22,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:44:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2024-11-23 23:44:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:44:22,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:22,492 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:22,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:22,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:22,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:22,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash -493224382, now seen corresponding path program 1 times [2024-11-23 23:44:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:22,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342330141] [2024-11-23 23:44:22,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:28,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342330141] [2024-11-23 23:44:28,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342330141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:28,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:28,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:44:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989145192] [2024-11-23 23:44:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:28,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:44:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:28,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:44:28,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:44:28,492 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:44:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:29,732 INFO L93 Difference]: Finished difference Result 325 states and 469 transitions. [2024-11-23 23:44:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:44:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 179 [2024-11-23 23:44:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:29,745 INFO L225 Difference]: With dead ends: 325 [2024-11-23 23:44:29,745 INFO L226 Difference]: Without dead ends: 201 [2024-11-23 23:44:29,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:44:29,748 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 486 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:29,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 715 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:44:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-23 23:44:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2024-11-23 23:44:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.3832335329341316) internal successors, (231), 168 states have internal predecessors, (231), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 23:44:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 281 transitions. [2024-11-23 23:44:29,796 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 281 transitions. Word has length 179 [2024-11-23 23:44:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:29,798 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 281 transitions. [2024-11-23 23:44:29,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:44:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 281 transitions. [2024-11-23 23:44:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:29,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:29,802 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:29,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:44:29,802 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:29,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1535301185, now seen corresponding path program 1 times [2024-11-23 23:44:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:29,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788871099] [2024-11-23 23:44:29,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788871099] [2024-11-23 23:44:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788871099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:30,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336982377] [2024-11-23 23:44:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:30,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:30,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:30,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:30,369 INFO L87 Difference]: Start difference. First operand 195 states and 281 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:30,851 INFO L93 Difference]: Finished difference Result 430 states and 620 transitions. [2024-11-23 23:44:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:30,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:30,858 INFO L225 Difference]: With dead ends: 430 [2024-11-23 23:44:30,858 INFO L226 Difference]: Without dead ends: 238 [2024-11-23 23:44:30,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:30,862 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 65 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:30,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 604 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:44:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-23 23:44:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 195. [2024-11-23 23:44:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.3712574850299402) internal successors, (229), 168 states have internal predecessors, (229), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 23:44:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 279 transitions. [2024-11-23 23:44:30,913 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 279 transitions. Word has length 180 [2024-11-23 23:44:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:30,914 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 279 transitions. [2024-11-23 23:44:30,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 279 transitions. [2024-11-23 23:44:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:30,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:30,919 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:44:30,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1213410666, now seen corresponding path program 1 times [2024-11-23 23:44:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281660493] [2024-11-23 23:44:30,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281660493] [2024-11-23 23:44:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281660493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:31,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:44:31,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197544069] [2024-11-23 23:44:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:31,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:44:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:31,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:44:31,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:31,934 INFO L87 Difference]: Start difference. First operand 195 states and 279 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:32,750 INFO L93 Difference]: Finished difference Result 693 states and 988 transitions. [2024-11-23 23:44:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:44:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:32,761 INFO L225 Difference]: With dead ends: 693 [2024-11-23 23:44:32,761 INFO L226 Difference]: Without dead ends: 501 [2024-11-23 23:44:32,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:44:32,765 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 301 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:32,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1239 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:44:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-11-23 23:44:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 495. [2024-11-23 23:44:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 427 states have (on average 1.3676814988290398) internal successors, (584), 432 states have internal predecessors, (584), 61 states have call successors, (61), 6 states have call predecessors, (61), 6 states have return successors, (61), 56 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-23 23:44:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 706 transitions. [2024-11-23 23:44:32,867 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 706 transitions. Word has length 180 [2024-11-23 23:44:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:32,870 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 706 transitions. [2024-11-23 23:44:32,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 706 transitions. [2024-11-23 23:44:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:32,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:32,878 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:32,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:44:32,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:32,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2060488276, now seen corresponding path program 1 times [2024-11-23 23:44:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:32,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901747814] [2024-11-23 23:44:32,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:44:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901747814] [2024-11-23 23:44:35,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901747814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:35,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9445707] [2024-11-23 23:44:35,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:35,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:35,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:35,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:44:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:35,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 23:44:35,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:35,594 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 9 [2024-11-23 23:44:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:35,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:44:35,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9445707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:35,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:44:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2024-11-23 23:44:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620921571] [2024-11-23 23:44:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:35,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:44:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:35,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:44:35,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:44:35,788 INFO L87 Difference]: Start difference. First operand 495 states and 706 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:36,197 INFO L93 Difference]: Finished difference Result 1237 states and 1765 transitions. [2024-11-23 23:44:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:44:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:36,207 INFO L225 Difference]: With dead ends: 1237 [2024-11-23 23:44:36,207 INFO L226 Difference]: Without dead ends: 745 [2024-11-23 23:44:36,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:44:36,211 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 177 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:36,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1843 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-11-23 23:44:36,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 521. [2024-11-23 23:44:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 448 states have (on average 1.3504464285714286) internal successors, (605), 453 states have internal predecessors, (605), 65 states have call successors, (65), 7 states have call predecessors, (65), 7 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-23 23:44:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 735 transitions. [2024-11-23 23:44:36,336 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 735 transitions. Word has length 180 [2024-11-23 23:44:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:36,337 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 735 transitions. [2024-11-23 23:44:36,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 735 transitions. [2024-11-23 23:44:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:36,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:36,342 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:36,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:44:36,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:36,551 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:36,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -395762216, now seen corresponding path program 1 times [2024-11-23 23:44:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:36,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206578313] [2024-11-23 23:44:36,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 24 proven. 42 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:44:38,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:38,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206578313] [2024-11-23 23:44:38,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206578313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:38,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210012198] [2024-11-23 23:44:38,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:38,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:38,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:38,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:44:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:38,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 23:44:38,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:38,836 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 [2024-11-23 23:44:38,953 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 17 treesize of output 13 [2024-11-23 23:44:39,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-23 23:44:39,066 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 [2024-11-23 23:44:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:39,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:44:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210012198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:39,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:44:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2024-11-23 23:44:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014287035] [2024-11-23 23:44:39,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:39,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:44:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:39,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:44:39,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:44:39,160 INFO L87 Difference]: Start difference. First operand 521 states and 735 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:40,126 INFO L93 Difference]: Finished difference Result 1123 states and 1583 transitions. [2024-11-23 23:44:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:44:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:40,134 INFO L225 Difference]: With dead ends: 1123 [2024-11-23 23:44:40,134 INFO L226 Difference]: Without dead ends: 605 [2024-11-23 23:44:40,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:44:40,142 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 319 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:40,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1646 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:44:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-23 23:44:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 599. [2024-11-23 23:44:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 511 states have (on average 1.3444227005870841) internal successors, (687), 517 states have internal predecessors, (687), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 845 transitions. [2024-11-23 23:44:40,271 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 845 transitions. Word has length 180 [2024-11-23 23:44:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:40,272 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 845 transitions. [2024-11-23 23:44:40,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 845 transitions. [2024-11-23 23:44:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:40,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:40,280 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:40,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:40,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:40,481 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:40,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1416830570, now seen corresponding path program 1 times [2024-11-23 23:44:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802432201] [2024-11-23 23:44:40,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:41,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802432201] [2024-11-23 23:44:41,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802432201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:41,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:41,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:44:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086621437] [2024-11-23 23:44:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:41,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:44:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:41,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:44:41,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:41,322 INFO L87 Difference]: Start difference. First operand 599 states and 845 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:42,229 INFO L93 Difference]: Finished difference Result 1195 states and 1683 transitions. [2024-11-23 23:44:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:44:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:42,234 INFO L225 Difference]: With dead ends: 1195 [2024-11-23 23:44:42,235 INFO L226 Difference]: Without dead ends: 599 [2024-11-23 23:44:42,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:44:42,237 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 221 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:42,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1675 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:44:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-23 23:44:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 593. [2024-11-23 23:44:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 505 states have (on average 1.3405940594059407) internal successors, (677), 511 states have internal predecessors, (677), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 835 transitions. [2024-11-23 23:44:42,336 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 835 transitions. Word has length 180 [2024-11-23 23:44:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:42,337 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 835 transitions. [2024-11-23 23:44:42,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 835 transitions. [2024-11-23 23:44:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:42,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:42,345 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:42,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:44:42,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:42,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash 576235292, now seen corresponding path program 1 times [2024-11-23 23:44:42,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905297032] [2024-11-23 23:44:42,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:42,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905297032] [2024-11-23 23:44:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905297032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:43,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:43,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:44:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332378598] [2024-11-23 23:44:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:43,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:44:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:43,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:44:43,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:43,147 INFO L87 Difference]: Start difference. First operand 593 states and 835 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:43,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:43,603 INFO L93 Difference]: Finished difference Result 1360 states and 1921 transitions. [2024-11-23 23:44:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:43,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:43,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:43,609 INFO L225 Difference]: With dead ends: 1360 [2024-11-23 23:44:43,610 INFO L226 Difference]: Without dead ends: 770 [2024-11-23 23:44:43,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:44:43,612 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 124 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:43,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1301 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:44:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-23 23:44:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 599. [2024-11-23 23:44:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 511 states have (on average 1.340508806262231) internal successors, (685), 517 states have internal predecessors, (685), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 843 transitions. [2024-11-23 23:44:43,706 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 843 transitions. Word has length 180 [2024-11-23 23:44:43,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:43,707 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 843 transitions. [2024-11-23 23:44:43,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 843 transitions. [2024-11-23 23:44:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:43,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:43,710 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:43,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:44:43,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:43,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash -444833062, now seen corresponding path program 1 times [2024-11-23 23:44:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:43,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971219512] [2024-11-23 23:44:43,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971219512] [2024-11-23 23:44:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971219512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:44,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:44:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373881077] [2024-11-23 23:44:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:44,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:44:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:44,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:44:44,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:44:44,801 INFO L87 Difference]: Start difference. First operand 599 states and 843 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:45,503 INFO L93 Difference]: Finished difference Result 1578 states and 2224 transitions. [2024-11-23 23:44:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:45,511 INFO L225 Difference]: With dead ends: 1578 [2024-11-23 23:44:45,512 INFO L226 Difference]: Without dead ends: 982 [2024-11-23 23:44:45,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:44:45,516 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 369 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:45,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 676 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:44:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-11-23 23:44:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 649. [2024-11-23 23:44:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 561 states have (on average 1.3547237076648841) internal successors, (760), 567 states have internal predecessors, (760), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 918 transitions. [2024-11-23 23:44:45,625 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 918 transitions. Word has length 180 [2024-11-23 23:44:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:45,626 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 918 transitions. [2024-11-23 23:44:45,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 918 transitions. [2024-11-23 23:44:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:45,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:45,631 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:45,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:44:45,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:45,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash 898125811, now seen corresponding path program 1 times [2024-11-23 23:44:45,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:45,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613309127] [2024-11-23 23:44:45,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:45,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613309127] [2024-11-23 23:44:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613309127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592722882] [2024-11-23 23:44:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:45,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:45,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:45,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:45,990 INFO L87 Difference]: Start difference. First operand 649 states and 918 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:46,334 INFO L93 Difference]: Finished difference Result 1334 states and 1888 transitions. [2024-11-23 23:44:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:46,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:46,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:46,340 INFO L225 Difference]: With dead ends: 1334 [2024-11-23 23:44:46,341 INFO L226 Difference]: Without dead ends: 688 [2024-11-23 23:44:46,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:46,343 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 63 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:46,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 641 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-23 23:44:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 647. [2024-11-23 23:44:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 559 states have (on average 1.3470483005366727) internal successors, (753), 565 states have internal predecessors, (753), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 911 transitions. [2024-11-23 23:44:46,471 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 911 transitions. Word has length 180 [2024-11-23 23:44:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:46,472 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 911 transitions. [2024-11-23 23:44:46,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 911 transitions. [2024-11-23 23:44:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:44:46,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:46,478 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:46,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:44:46,478 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:46,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 256766812, now seen corresponding path program 1 times [2024-11-23 23:44:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:46,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21116385] [2024-11-23 23:44:46,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21116385] [2024-11-23 23:44:46,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21116385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:46,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:46,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288836543] [2024-11-23 23:44:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:46,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:46,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:46,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:46,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:46,676 INFO L87 Difference]: Start difference. First operand 647 states and 911 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:46,831 INFO L93 Difference]: Finished difference Result 1271 states and 1789 transitions. [2024-11-23 23:44:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:44:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:46,838 INFO L225 Difference]: With dead ends: 1271 [2024-11-23 23:44:46,841 INFO L226 Difference]: Without dead ends: 627 [2024-11-23 23:44:46,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:46,845 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:46,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 534 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-23 23:44:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2024-11-23 23:44:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 539 states have (on average 1.3376623376623376) internal successors, (721), 545 states have internal predecessors, (721), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 879 transitions. [2024-11-23 23:44:46,978 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 879 transitions. Word has length 180 [2024-11-23 23:44:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:46,980 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 879 transitions. [2024-11-23 23:44:46,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 879 transitions. [2024-11-23 23:44:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:44:46,985 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:46,985 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:46,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:44:46,986 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:46,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1900634344, now seen corresponding path program 1 times [2024-11-23 23:44:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:46,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37565697] [2024-11-23 23:44:46,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:46,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:47,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:47,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37565697] [2024-11-23 23:44:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37565697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:47,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669325645] [2024-11-23 23:44:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:47,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:47,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:47,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:47,191 INFO L87 Difference]: Start difference. First operand 627 states and 879 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:47,311 INFO L93 Difference]: Finished difference Result 1257 states and 1763 transitions. [2024-11-23 23:44:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:47,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2024-11-23 23:44:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:47,318 INFO L225 Difference]: With dead ends: 1257 [2024-11-23 23:44:47,318 INFO L226 Difference]: Without dead ends: 633 [2024-11-23 23:44:47,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:47,321 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 1 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:47,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 707 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-23 23:44:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2024-11-23 23:44:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 545 states have (on average 1.3339449541284403) internal successors, (727), 551 states have internal predecessors, (727), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 885 transitions. [2024-11-23 23:44:47,412 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 885 transitions. Word has length 181 [2024-11-23 23:44:47,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:47,413 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 885 transitions. [2024-11-23 23:44:47,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 885 transitions. [2024-11-23 23:44:47,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:44:47,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:47,419 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:47,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:44:47,420 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:47,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1973020902, now seen corresponding path program 1 times [2024-11-23 23:44:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863244286] [2024-11-23 23:44:47,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:48,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:48,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863244286] [2024-11-23 23:44:48,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863244286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:48,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:48,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:44:48,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386837958] [2024-11-23 23:44:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:48,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:44:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:48,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:44:48,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:44:48,682 INFO L87 Difference]: Start difference. First operand 633 states and 885 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:49,311 INFO L93 Difference]: Finished difference Result 1302 states and 1822 transitions. [2024-11-23 23:44:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:49,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2024-11-23 23:44:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:49,317 INFO L225 Difference]: With dead ends: 1302 [2024-11-23 23:44:49,318 INFO L226 Difference]: Without dead ends: 672 [2024-11-23 23:44:49,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:44:49,321 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 439 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:49,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 598 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:44:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-23 23:44:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 630. [2024-11-23 23:44:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 542 states have (on average 1.3339483394833949) internal successors, (723), 548 states have internal predecessors, (723), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 881 transitions. [2024-11-23 23:44:49,403 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 881 transitions. Word has length 181 [2024-11-23 23:44:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:49,405 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 881 transitions. [2024-11-23 23:44:49,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 881 transitions. [2024-11-23 23:44:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:44:49,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:49,409 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:49,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:44:49,409 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:49,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1654071006, now seen corresponding path program 1 times [2024-11-23 23:44:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967835452] [2024-11-23 23:44:49,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:49,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:50,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:50,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967835452] [2024-11-23 23:44:50,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967835452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:50,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:50,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:44:50,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774833497] [2024-11-23 23:44:50,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:50,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:44:50,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:50,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:44:50,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:44:50,560 INFO L87 Difference]: Start difference. First operand 630 states and 881 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:51,321 INFO L93 Difference]: Finished difference Result 1335 states and 1871 transitions. [2024-11-23 23:44:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:51,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2024-11-23 23:44:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:51,328 INFO L225 Difference]: With dead ends: 1335 [2024-11-23 23:44:51,328 INFO L226 Difference]: Without dead ends: 708 [2024-11-23 23:44:51,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:44:51,330 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 358 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:51,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 575 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:44:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-23 23:44:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 630. [2024-11-23 23:44:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 542 states have (on average 1.330258302583026) internal successors, (721), 548 states have internal predecessors, (721), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 879 transitions. [2024-11-23 23:44:51,414 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 879 transitions. Word has length 181 [2024-11-23 23:44:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:51,414 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 879 transitions. [2024-11-23 23:44:51,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 879 transitions. [2024-11-23 23:44:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:44:51,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:51,418 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:51,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:44:51,419 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:51,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash 633002652, now seen corresponding path program 1 times [2024-11-23 23:44:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:51,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777326883] [2024-11-23 23:44:51,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777326883] [2024-11-23 23:44:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777326883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:44:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145994857] [2024-11-23 23:44:52,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:52,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:44:52,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:52,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:44:52,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:52,055 INFO L87 Difference]: Start difference. First operand 630 states and 879 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:52,496 INFO L93 Difference]: Finished difference Result 1414 states and 1980 transitions. [2024-11-23 23:44:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:44:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2024-11-23 23:44:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:52,503 INFO L225 Difference]: With dead ends: 1414 [2024-11-23 23:44:52,503 INFO L226 Difference]: Without dead ends: 787 [2024-11-23 23:44:52,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:44:52,507 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 115 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:52,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1520 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:44:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-23 23:44:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 622. [2024-11-23 23:44:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 534 states have (on average 1.3314606741573034) internal successors, (711), 540 states have internal predecessors, (711), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:52,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 869 transitions. [2024-11-23 23:44:52,621 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 869 transitions. Word has length 181 [2024-11-23 23:44:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:52,622 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 869 transitions. [2024-11-23 23:44:52,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 869 transitions. [2024-11-23 23:44:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 23:44:52,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:52,627 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:52,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:44:52,628 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:52,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2112639665, now seen corresponding path program 1 times [2024-11-23 23:44:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:52,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010313184] [2024-11-23 23:44:52,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:52,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:52,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010313184] [2024-11-23 23:44:52,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010313184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:52,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546911433] [2024-11-23 23:44:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:52,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:52,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:52,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:52,758 INFO L87 Difference]: Start difference. First operand 622 states and 869 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:52,841 INFO L93 Difference]: Finished difference Result 1242 states and 1737 transitions. [2024-11-23 23:44:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 182 [2024-11-23 23:44:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:52,847 INFO L225 Difference]: With dead ends: 1242 [2024-11-23 23:44:52,847 INFO L226 Difference]: Without dead ends: 623 [2024-11-23 23:44:52,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:52,849 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:52,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-23 23:44:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2024-11-23 23:44:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 535 states have (on average 1.330841121495327) internal successors, (712), 541 states have internal predecessors, (712), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 870 transitions. [2024-11-23 23:44:52,928 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 870 transitions. Word has length 182 [2024-11-23 23:44:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:52,928 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 870 transitions. [2024-11-23 23:44:52,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 870 transitions. [2024-11-23 23:44:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 23:44:52,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:52,932 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:52,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:44:52,933 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:52,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1083280367, now seen corresponding path program 1 times [2024-11-23 23:44:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:52,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130212955] [2024-11-23 23:44:52,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:52,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:53,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130212955] [2024-11-23 23:44:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130212955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:53,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:53,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:53,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125757213] [2024-11-23 23:44:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:53,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:53,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:53,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:53,238 INFO L87 Difference]: Start difference. First operand 623 states and 870 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:53,412 INFO L93 Difference]: Finished difference Result 1244 states and 1738 transitions. [2024-11-23 23:44:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:53,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 182 [2024-11-23 23:44:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:53,418 INFO L225 Difference]: With dead ends: 1244 [2024-11-23 23:44:53,418 INFO L226 Difference]: Without dead ends: 624 [2024-11-23 23:44:53,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:53,421 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 4 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:53,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 676 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-23 23:44:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 623. [2024-11-23 23:44:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 535 states have (on average 1.3289719626168224) internal successors, (711), 541 states have internal predecessors, (711), 79 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:44:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 869 transitions. [2024-11-23 23:44:53,502 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 869 transitions. Word has length 182 [2024-11-23 23:44:53,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:53,504 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 869 transitions. [2024-11-23 23:44:53,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 869 transitions. [2024-11-23 23:44:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 23:44:53,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:53,509 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:53,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:44:53,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:53,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash 688913581, now seen corresponding path program 1 times [2024-11-23 23:44:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:53,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953449856] [2024-11-23 23:44:53,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:53,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953449856] [2024-11-23 23:44:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953449856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:53,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:53,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717580190] [2024-11-23 23:44:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:53,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:53,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:53,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:53,796 INFO L87 Difference]: Start difference. First operand 623 states and 869 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:53,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:53,942 INFO L93 Difference]: Finished difference Result 1083 states and 1510 transitions. [2024-11-23 23:44:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:53,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 182 [2024-11-23 23:44:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:53,948 INFO L225 Difference]: With dead ends: 1083 [2024-11-23 23:44:53,948 INFO L226 Difference]: Without dead ends: 463 [2024-11-23 23:44:53,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:53,951 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:53,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-23 23:44:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 462. [2024-11-23 23:44:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 377 states have (on average 1.2944297082228118) internal successors, (488), 382 states have internal predecessors, (488), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 642 transitions. [2024-11-23 23:44:54,051 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 642 transitions. Word has length 182 [2024-11-23 23:44:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:54,051 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 642 transitions. [2024-11-23 23:44:54,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 642 transitions. [2024-11-23 23:44:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-23 23:44:54,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:54,054 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:54,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:44:54,054 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:54,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:54,057 INFO L85 PathProgramCache]: Analyzing trace with hash -621272487, now seen corresponding path program 1 times [2024-11-23 23:44:54,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559018026] [2024-11-23 23:44:54,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559018026] [2024-11-23 23:44:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559018026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:54,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:44:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696091018] [2024-11-23 23:44:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:54,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:44:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:54,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:44:54,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:44:54,857 INFO L87 Difference]: Start difference. First operand 462 states and 642 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:55,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:55,256 INFO L93 Difference]: Finished difference Result 900 states and 1247 transitions. [2024-11-23 23:44:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:44:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 183 [2024-11-23 23:44:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:55,262 INFO L225 Difference]: With dead ends: 900 [2024-11-23 23:44:55,263 INFO L226 Difference]: Without dead ends: 478 [2024-11-23 23:44:55,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:44:55,265 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 144 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:55,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1452 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:44:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-23 23:44:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 477. [2024-11-23 23:44:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 392 states have (on average 1.2831632653061225) internal successors, (503), 397 states have internal predecessors, (503), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 657 transitions. [2024-11-23 23:44:55,330 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 657 transitions. Word has length 183 [2024-11-23 23:44:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:55,331 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 657 transitions. [2024-11-23 23:44:55,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 657 transitions. [2024-11-23 23:44:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:44:55,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:55,334 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:55,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:44:55,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:55,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash -67911810, now seen corresponding path program 1 times [2024-11-23 23:44:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:55,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817230927] [2024-11-23 23:44:55,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:55,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:55,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817230927] [2024-11-23 23:44:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817230927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:44:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764397874] [2024-11-23 23:44:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:55,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:44:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:55,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:44:55,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:55,478 INFO L87 Difference]: Start difference. First operand 477 states and 657 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:55,548 INFO L93 Difference]: Finished difference Result 919 states and 1266 transitions. [2024-11-23 23:44:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:44:55,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2024-11-23 23:44:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:55,554 INFO L225 Difference]: With dead ends: 919 [2024-11-23 23:44:55,554 INFO L226 Difference]: Without dead ends: 482 [2024-11-23 23:44:55,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:44:55,559 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:55,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-23 23:44:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2024-11-23 23:44:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 397 states have (on average 1.279596977329975) internal successors, (508), 402 states have internal predecessors, (508), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 662 transitions. [2024-11-23 23:44:55,635 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 662 transitions. Word has length 185 [2024-11-23 23:44:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:55,636 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 662 transitions. [2024-11-23 23:44:55,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 662 transitions. [2024-11-23 23:44:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:44:55,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:55,638 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:55,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:44:55,639 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:55,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:55,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1656259712, now seen corresponding path program 1 times [2024-11-23 23:44:55,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:55,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140252210] [2024-11-23 23:44:55,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:55,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140252210] [2024-11-23 23:44:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140252210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258740837] [2024-11-23 23:44:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:55,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:55,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:55,971 INFO L87 Difference]: Start difference. First operand 482 states and 662 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:56,283 INFO L93 Difference]: Finished difference Result 1219 states and 1673 transitions. [2024-11-23 23:44:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:56,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2024-11-23 23:44:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:56,290 INFO L225 Difference]: With dead ends: 1219 [2024-11-23 23:44:56,290 INFO L226 Difference]: Without dead ends: 777 [2024-11-23 23:44:56,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:56,294 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 108 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:56,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 829 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-23 23:44:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 482. [2024-11-23 23:44:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 397 states have (on average 1.2670025188916876) internal successors, (503), 402 states have internal predecessors, (503), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 657 transitions. [2024-11-23 23:44:56,381 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 657 transitions. Word has length 185 [2024-11-23 23:44:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:56,381 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 657 transitions. [2024-11-23 23:44:56,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 657 transitions. [2024-11-23 23:44:56,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-23 23:44:56,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:56,384 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:56,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:44:56,384 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:56,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1358843906, now seen corresponding path program 1 times [2024-11-23 23:44:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29389740] [2024-11-23 23:44:56,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29389740] [2024-11-23 23:44:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29389740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:56,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391273719] [2024-11-23 23:44:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:56,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:56,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:56,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:56,668 INFO L87 Difference]: Start difference. First operand 482 states and 657 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:56,795 INFO L93 Difference]: Finished difference Result 899 states and 1226 transitions. [2024-11-23 23:44:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 185 [2024-11-23 23:44:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:56,801 INFO L225 Difference]: With dead ends: 899 [2024-11-23 23:44:56,801 INFO L226 Difference]: Without dead ends: 457 [2024-11-23 23:44:56,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:56,806 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:56,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-23 23:44:56,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 452. [2024-11-23 23:44:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 367 states have (on average 1.2615803814713897) internal successors, (463), 372 states have internal predecessors, (463), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 617 transitions. [2024-11-23 23:44:56,879 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 617 transitions. Word has length 185 [2024-11-23 23:44:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:56,880 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 617 transitions. [2024-11-23 23:44:56,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 617 transitions. [2024-11-23 23:44:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-23 23:44:56,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:56,883 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:56,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:44:56,884 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:56,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash -730884783, now seen corresponding path program 1 times [2024-11-23 23:44:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421527491] [2024-11-23 23:44:56,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421527491] [2024-11-23 23:44:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421527491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:58,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:44:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816887440] [2024-11-23 23:44:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:58,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:44:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:58,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:44:58,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:44:58,229 INFO L87 Difference]: Start difference. First operand 452 states and 617 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:59,024 INFO L93 Difference]: Finished difference Result 1007 states and 1366 transitions. [2024-11-23 23:44:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:44:59,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 187 [2024-11-23 23:44:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:59,030 INFO L225 Difference]: With dead ends: 1007 [2024-11-23 23:44:59,031 INFO L226 Difference]: Without dead ends: 595 [2024-11-23 23:44:59,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:44:59,034 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 358 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:59,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1149 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:44:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-23 23:44:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 518. [2024-11-23 23:44:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 433 states have (on average 1.251732101616628) internal successors, (542), 438 states have internal predecessors, (542), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 696 transitions. [2024-11-23 23:44:59,126 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 696 transitions. Word has length 187 [2024-11-23 23:44:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:59,127 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 696 transitions. [2024-11-23 23:44:59,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 696 transitions. [2024-11-23 23:44:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-23 23:44:59,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:59,129 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:59,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:44:59,130 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:59,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash -472719345, now seen corresponding path program 1 times [2024-11-23 23:44:59,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:59,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425290034] [2024-11-23 23:44:59,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:59,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:44:59,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:59,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425290034] [2024-11-23 23:44:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425290034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:59,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:59,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:59,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759659410] [2024-11-23 23:44:59,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:59,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:59,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:59,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:59,282 INFO L87 Difference]: Start difference. First operand 518 states and 696 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:59,374 INFO L93 Difference]: Finished difference Result 1015 states and 1361 transitions. [2024-11-23 23:44:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 187 [2024-11-23 23:44:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:59,385 INFO L225 Difference]: With dead ends: 1015 [2024-11-23 23:44:59,386 INFO L226 Difference]: Without dead ends: 537 [2024-11-23 23:44:59,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:59,388 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:59,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 502 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-23 23:44:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 534. [2024-11-23 23:44:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 449 states have (on average 1.242761692650334) internal successors, (558), 454 states have internal predecessors, (558), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:44:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 712 transitions. [2024-11-23 23:44:59,460 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 712 transitions. Word has length 187 [2024-11-23 23:44:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:59,461 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 712 transitions. [2024-11-23 23:44:59,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:44:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 712 transitions. [2024-11-23 23:44:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-23 23:44:59,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:59,463 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:59,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:44:59,464 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:59,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1725337417, now seen corresponding path program 1 times [2024-11-23 23:44:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006138457] [2024-11-23 23:44:59,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:00,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006138457] [2024-11-23 23:45:00,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006138457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:00,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:00,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:45:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048505199] [2024-11-23 23:45:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:00,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:45:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:00,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:45:00,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:45:00,150 INFO L87 Difference]: Start difference. First operand 534 states and 712 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:00,876 INFO L93 Difference]: Finished difference Result 1235 states and 1630 transitions. [2024-11-23 23:45:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:00,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 188 [2024-11-23 23:45:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:00,882 INFO L225 Difference]: With dead ends: 1235 [2024-11-23 23:45:00,882 INFO L226 Difference]: Without dead ends: 741 [2024-11-23 23:45:00,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:45:00,885 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 285 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:00,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 675 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:45:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-23 23:45:00,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 567. [2024-11-23 23:45:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 482 states have (on average 1.2365145228215768) internal successors, (596), 487 states have internal predecessors, (596), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-23 23:45:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2024-11-23 23:45:00,996 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 188 [2024-11-23 23:45:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:00,998 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2024-11-23 23:45:00,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2024-11-23 23:45:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:01,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:01,002 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:01,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:45:01,002 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:01,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2086549611, now seen corresponding path program 1 times [2024-11-23 23:45:01,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558085031] [2024-11-23 23:45:01,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:01,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:03,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:03,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558085031] [2024-11-23 23:45:03,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558085031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:03,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:03,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:45:03,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495028717] [2024-11-23 23:45:03,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:03,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:45:03,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:03,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:45:03,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:45:03,181 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:04,296 INFO L93 Difference]: Finished difference Result 1145 states and 1507 transitions. [2024-11-23 23:45:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:04,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2024-11-23 23:45:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:04,301 INFO L225 Difference]: With dead ends: 1145 [2024-11-23 23:45:04,302 INFO L226 Difference]: Without dead ends: 618 [2024-11-23 23:45:04,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:45:04,304 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 383 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:04,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 806 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:45:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-23 23:45:04,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2024-11-23 23:45:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 525 states have (on average 1.24) internal successors, (651), 531 states have internal predecessors, (651), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:45:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 809 transitions. [2024-11-23 23:45:04,425 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 809 transitions. Word has length 189 [2024-11-23 23:45:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:04,425 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 809 transitions. [2024-11-23 23:45:04,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 10 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 809 transitions. [2024-11-23 23:45:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:04,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:04,427 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:04,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:45:04,429 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:04,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash 267792035, now seen corresponding path program 1 times [2024-11-23 23:45:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419035890] [2024-11-23 23:45:04,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:07,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419035890] [2024-11-23 23:45:07,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419035890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:07,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:07,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:45:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555416926] [2024-11-23 23:45:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:07,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:45:07,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:07,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:45:07,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:07,409 INFO L87 Difference]: Start difference. First operand 614 states and 809 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:08,877 INFO L93 Difference]: Finished difference Result 1321 states and 1738 transitions. [2024-11-23 23:45:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:45:08,878 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2024-11-23 23:45:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:08,883 INFO L225 Difference]: With dead ends: 1321 [2024-11-23 23:45:08,883 INFO L226 Difference]: Without dead ends: 751 [2024-11-23 23:45:08,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:45:08,885 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 324 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:08,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 962 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:45:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-23 23:45:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 617. [2024-11-23 23:45:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 528 states have (on average 1.240530303030303) internal successors, (655), 534 states have internal predecessors, (655), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:45:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 813 transitions. [2024-11-23 23:45:08,970 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 813 transitions. Word has length 189 [2024-11-23 23:45:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:08,971 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 813 transitions. [2024-11-23 23:45:08,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 813 transitions. [2024-11-23 23:45:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:08,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:08,973 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:08,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:45:08,974 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:08,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1475606685, now seen corresponding path program 1 times [2024-11-23 23:45:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:08,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862134025] [2024-11-23 23:45:08,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:11,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:11,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862134025] [2024-11-23 23:45:11,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862134025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:11,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:45:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822629934] [2024-11-23 23:45:11,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:11,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:45:11,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:11,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:45:11,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:11,427 INFO L87 Difference]: Start difference. First operand 617 states and 813 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:12,380 INFO L93 Difference]: Finished difference Result 1349 states and 1771 transitions. [2024-11-23 23:45:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2024-11-23 23:45:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:12,385 INFO L225 Difference]: With dead ends: 1349 [2024-11-23 23:45:12,385 INFO L226 Difference]: Without dead ends: 776 [2024-11-23 23:45:12,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:45:12,388 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 301 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:12,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 678 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:45:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-23 23:45:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 621. [2024-11-23 23:45:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 532 states have (on average 1.2349624060150375) internal successors, (657), 538 states have internal predecessors, (657), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:45:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 815 transitions. [2024-11-23 23:45:12,481 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 815 transitions. Word has length 189 [2024-11-23 23:45:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:12,482 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 815 transitions. [2024-11-23 23:45:12,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 815 transitions. [2024-11-23 23:45:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:12,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:12,484 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:12,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:45:12,485 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:12,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1831826601, now seen corresponding path program 1 times [2024-11-23 23:45:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:12,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132113771] [2024-11-23 23:45:12,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:12,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132113771] [2024-11-23 23:45:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132113771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:45:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995233315] [2024-11-23 23:45:12,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:12,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:45:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:12,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:45:12,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:45:12,652 INFO L87 Difference]: Start difference. First operand 621 states and 815 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:12,757 INFO L93 Difference]: Finished difference Result 1228 states and 1608 transitions. [2024-11-23 23:45:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:45:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 189 [2024-11-23 23:45:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:12,760 INFO L225 Difference]: With dead ends: 1228 [2024-11-23 23:45:12,760 INFO L226 Difference]: Without dead ends: 651 [2024-11-23 23:45:12,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:45:12,762 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 1 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:12,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 664 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:12,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-23 23:45:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 638. [2024-11-23 23:45:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 549 states have (on average 1.2276867030965393) internal successors, (674), 555 states have internal predecessors, (674), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:45:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 832 transitions. [2024-11-23 23:45:12,852 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 832 transitions. Word has length 189 [2024-11-23 23:45:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:12,852 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 832 transitions. [2024-11-23 23:45:12,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 832 transitions. [2024-11-23 23:45:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:12,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:12,855 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:12,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:45:12,855 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:12,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 551962923, now seen corresponding path program 1 times [2024-11-23 23:45:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505828797] [2024-11-23 23:45:12,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505828797] [2024-11-23 23:45:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505828797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:13,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:45:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572058502] [2024-11-23 23:45:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:13,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:45:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:13,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:45:13,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:45:13,581 INFO L87 Difference]: Start difference. First operand 638 states and 832 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:45:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:14,320 INFO L93 Difference]: Finished difference Result 1364 states and 1768 transitions. [2024-11-23 23:45:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 189 [2024-11-23 23:45:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:14,325 INFO L225 Difference]: With dead ends: 1364 [2024-11-23 23:45:14,325 INFO L226 Difference]: Without dead ends: 770 [2024-11-23 23:45:14,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:45:14,328 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 477 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:14,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 707 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:45:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-23 23:45:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 638. [2024-11-23 23:45:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 549 states have (on average 1.2240437158469946) internal successors, (672), 555 states have internal predecessors, (672), 79 states have call successors, (79), 9 states have call predecessors, (79), 9 states have return successors, (79), 73 states have call predecessors, (79), 79 states have call successors, (79) [2024-11-23 23:45:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 830 transitions. [2024-11-23 23:45:14,431 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 830 transitions. Word has length 189 [2024-11-23 23:45:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:14,432 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 830 transitions. [2024-11-23 23:45:14,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:45:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 830 transitions. [2024-11-23 23:45:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-23 23:45:14,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:14,434 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:14,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 23:45:14,435 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:14,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 777621859, now seen corresponding path program 1 times [2024-11-23 23:45:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:14,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926432022] [2024-11-23 23:45:14,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926432022] [2024-11-23 23:45:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926432022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:45:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239461045] [2024-11-23 23:45:16,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:16,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:45:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:16,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:45:16,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:45:16,766 INFO L87 Difference]: Start difference. First operand 638 states and 830 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:17,876 INFO L93 Difference]: Finished difference Result 1293 states and 1667 transitions. [2024-11-23 23:45:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2024-11-23 23:45:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:17,881 INFO L225 Difference]: With dead ends: 1293 [2024-11-23 23:45:17,882 INFO L226 Difference]: Without dead ends: 699 [2024-11-23 23:45:17,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:45:17,884 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 579 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:17,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 666 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:45:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-23 23:45:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 497. [2024-11-23 23:45:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 414 states have (on average 1.1956521739130435) internal successors, (495), 417 states have internal predecessors, (495), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:45:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 641 transitions. [2024-11-23 23:45:17,974 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 641 transitions. Word has length 189 [2024-11-23 23:45:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:17,974 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 641 transitions. [2024-11-23 23:45:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 641 transitions. [2024-11-23 23:45:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:17,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:17,976 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:17,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:45:17,976 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:17,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash 346704995, now seen corresponding path program 1 times [2024-11-23 23:45:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888396027] [2024-11-23 23:45:17,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:20,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:20,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888396027] [2024-11-23 23:45:20,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888396027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:20,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:20,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:45:20,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698437552] [2024-11-23 23:45:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:20,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:45:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:20,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:45:20,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:20,627 INFO L87 Difference]: Start difference. First operand 497 states and 641 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:21,886 INFO L93 Difference]: Finished difference Result 1142 states and 1459 transitions. [2024-11-23 23:45:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:45:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2024-11-23 23:45:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:21,901 INFO L225 Difference]: With dead ends: 1142 [2024-11-23 23:45:21,901 INFO L226 Difference]: Without dead ends: 689 [2024-11-23 23:45:21,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:45:21,903 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 241 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:21,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 874 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:45:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-23 23:45:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 684. [2024-11-23 23:45:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 583 states have (on average 1.2041166380789021) internal successors, (702), 589 states have internal predecessors, (702), 85 states have call successors, (85), 15 states have call predecessors, (85), 15 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-23 23:45:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 872 transitions. [2024-11-23 23:45:22,071 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 872 transitions. Word has length 190 [2024-11-23 23:45:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:22,071 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 872 transitions. [2024-11-23 23:45:22,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 872 transitions. [2024-11-23 23:45:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:22,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:22,074 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:22,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 23:45:22,074 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:22,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash 594851489, now seen corresponding path program 1 times [2024-11-23 23:45:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:22,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452660682] [2024-11-23 23:45:22,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:24,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452660682] [2024-11-23 23:45:24,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452660682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:24,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:24,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:45:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982430331] [2024-11-23 23:45:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:24,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:45:24,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:24,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:45:24,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:45:24,642 INFO L87 Difference]: Start difference. First operand 684 states and 872 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:26,324 INFO L93 Difference]: Finished difference Result 1470 states and 1867 transitions. [2024-11-23 23:45:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:45:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2024-11-23 23:45:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:26,330 INFO L225 Difference]: With dead ends: 1470 [2024-11-23 23:45:26,330 INFO L226 Difference]: Without dead ends: 830 [2024-11-23 23:45:26,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:45:26,332 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 677 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:26,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1252 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:45:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-23 23:45:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 813. [2024-11-23 23:45:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 688 states have (on average 1.2078488372093024) internal successors, (831), 697 states have internal predecessors, (831), 103 states have call successors, (103), 21 states have call predecessors, (103), 21 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1037 transitions. [2024-11-23 23:45:26,551 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1037 transitions. Word has length 190 [2024-11-23 23:45:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:26,551 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1037 transitions. [2024-11-23 23:45:26,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1037 transitions. [2024-11-23 23:45:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:26,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:26,553 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:26,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 23:45:26,554 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:26,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -228817437, now seen corresponding path program 1 times [2024-11-23 23:45:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941117981] [2024-11-23 23:45:26,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:29,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941117981] [2024-11-23 23:45:29,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941117981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:29,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:29,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:45:29,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659303842] [2024-11-23 23:45:29,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:29,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:45:29,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:29,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:45:29,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:29,100 INFO L87 Difference]: Start difference. First operand 813 states and 1037 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:30,395 INFO L93 Difference]: Finished difference Result 1705 states and 2164 transitions. [2024-11-23 23:45:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:30,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2024-11-23 23:45:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:30,403 INFO L225 Difference]: With dead ends: 1705 [2024-11-23 23:45:30,403 INFO L226 Difference]: Without dead ends: 936 [2024-11-23 23:45:30,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:45:30,406 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 573 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:30,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 695 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:45:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-23 23:45:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 820. [2024-11-23 23:45:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 691 states have (on average 1.1982633863965269) internal successors, (828), 700 states have internal predecessors, (828), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1034 transitions. [2024-11-23 23:45:30,794 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1034 transitions. Word has length 190 [2024-11-23 23:45:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:30,795 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1034 transitions. [2024-11-23 23:45:30,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1034 transitions. [2024-11-23 23:45:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:30,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:30,799 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:30,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 23:45:30,799 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1508681115, now seen corresponding path program 1 times [2024-11-23 23:45:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232772183] [2024-11-23 23:45:30,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:33,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:33,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232772183] [2024-11-23 23:45:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232772183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:33,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:33,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:45:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641601896] [2024-11-23 23:45:33,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:33,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:45:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:33,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:45:33,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:45:33,188 INFO L87 Difference]: Start difference. First operand 820 states and 1034 transitions. Second operand has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:34,720 INFO L93 Difference]: Finished difference Result 1736 states and 2182 transitions. [2024-11-23 23:45:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:45:34,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 190 [2024-11-23 23:45:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:34,728 INFO L225 Difference]: With dead ends: 1736 [2024-11-23 23:45:34,728 INFO L226 Difference]: Without dead ends: 964 [2024-11-23 23:45:34,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:45:34,731 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 564 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:34,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1076 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:45:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-11-23 23:45:34,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 824. [2024-11-23 23:45:34,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 694 states have (on average 1.1930835734870318) internal successors, (828), 703 states have internal predecessors, (828), 103 states have call successors, (103), 26 states have call predecessors, (103), 26 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1034 transitions. [2024-11-23 23:45:34,975 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1034 transitions. Word has length 190 [2024-11-23 23:45:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:34,976 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1034 transitions. [2024-11-23 23:45:34,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.0) internal successors, (78), 14 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:34,976 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1034 transitions. [2024-11-23 23:45:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:34,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:34,979 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:34,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 23:45:34,979 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:34,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1250515677, now seen corresponding path program 1 times [2024-11-23 23:45:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:34,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097686807] [2024-11-23 23:45:34,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:34,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:38,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:38,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097686807] [2024-11-23 23:45:38,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097686807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:38,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:45:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652655195] [2024-11-23 23:45:38,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:38,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:45:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:38,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:45:38,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:45:38,437 INFO L87 Difference]: Start difference. First operand 824 states and 1034 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:40,453 INFO L93 Difference]: Finished difference Result 1704 states and 2145 transitions. [2024-11-23 23:45:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:45:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 190 [2024-11-23 23:45:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:40,457 INFO L225 Difference]: With dead ends: 1704 [2024-11-23 23:45:40,457 INFO L226 Difference]: Without dead ends: 932 [2024-11-23 23:45:40,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:45:40,459 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 579 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:40,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1533 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:45:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-23 23:45:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 837. [2024-11-23 23:45:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 707 states have (on average 1.190947666195191) internal successors, (842), 716 states have internal predecessors, (842), 103 states have call successors, (103), 26 states have call predecessors, (103), 26 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1048 transitions. [2024-11-23 23:45:40,633 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1048 transitions. Word has length 190 [2024-11-23 23:45:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:40,633 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 1048 transitions. [2024-11-23 23:45:40,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:45:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1048 transitions. [2024-11-23 23:45:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-23 23:45:40,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:40,636 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:40,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 23:45:40,636 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:40,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1619440157, now seen corresponding path program 1 times [2024-11-23 23:45:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209889792] [2024-11-23 23:45:40,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:44,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209889792] [2024-11-23 23:45:44,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209889792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:44,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:45:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558002126] [2024-11-23 23:45:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:44,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:45:44,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:44,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:45:44,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:45:44,289 INFO L87 Difference]: Start difference. First operand 837 states and 1048 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:46,054 INFO L93 Difference]: Finished difference Result 1646 states and 2061 transitions. [2024-11-23 23:45:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:45:46,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2024-11-23 23:45:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:46,058 INFO L225 Difference]: With dead ends: 1646 [2024-11-23 23:45:46,058 INFO L226 Difference]: Without dead ends: 861 [2024-11-23 23:45:46,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:45:46,060 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 604 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:46,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1108 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:45:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-23 23:45:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 821. [2024-11-23 23:45:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 691 states have (on average 1.1924746743849493) internal successors, (824), 700 states have internal predecessors, (824), 103 states have call successors, (103), 26 states have call predecessors, (103), 26 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1030 transitions. [2024-11-23 23:45:46,276 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1030 transitions. Word has length 190 [2024-11-23 23:45:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:46,276 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1030 transitions. [2024-11-23 23:45:46,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1030 transitions. [2024-11-23 23:45:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:45:46,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:46,279 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:46,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 23:45:46,280 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:46,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash -196934681, now seen corresponding path program 1 times [2024-11-23 23:45:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592662395] [2024-11-23 23:45:46,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592662395] [2024-11-23 23:45:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592662395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:46,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:45:46,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055769932] [2024-11-23 23:45:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:46,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:45:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:46,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:45:46,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:46,428 INFO L87 Difference]: Start difference. First operand 821 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:46,626 INFO L93 Difference]: Finished difference Result 1617 states and 2029 transitions. [2024-11-23 23:45:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:45:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2024-11-23 23:45:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:46,632 INFO L225 Difference]: With dead ends: 1617 [2024-11-23 23:45:46,633 INFO L226 Difference]: Without dead ends: 848 [2024-11-23 23:45:46,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:45:46,635 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:46,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 503 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:45:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-23 23:45:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 839. [2024-11-23 23:45:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 709 states have (on average 1.1875881523272214) internal successors, (842), 718 states have internal predecessors, (842), 103 states have call successors, (103), 26 states have call predecessors, (103), 26 states have return successors, (103), 94 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-23 23:45:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1048 transitions. [2024-11-23 23:45:46,896 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1048 transitions. Word has length 191 [2024-11-23 23:45:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:46,897 INFO L471 AbstractCegarLoop]: Abstraction has 839 states and 1048 transitions. [2024-11-23 23:45:46,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:45:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1048 transitions. [2024-11-23 23:45:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:45:46,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:46,899 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:46,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 23:45:46,899 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:46,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -589961691, now seen corresponding path program 1 times [2024-11-23 23:45:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:46,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362757630] [2024-11-23 23:45:46,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:48,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362757630] [2024-11-23 23:45:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362757630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:48,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:48,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:45:48,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386472599] [2024-11-23 23:45:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:48,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:45:48,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:48,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:45:48,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:45:48,566 INFO L87 Difference]: Start difference. First operand 839 states and 1048 transitions. Second operand has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:49,895 INFO L93 Difference]: Finished difference Result 2317 states and 2883 transitions. [2024-11-23 23:45:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:45:49,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 191 [2024-11-23 23:45:49,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:49,906 INFO L225 Difference]: With dead ends: 2317 [2024-11-23 23:45:49,907 INFO L226 Difference]: Without dead ends: 1530 [2024-11-23 23:45:49,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:45:49,909 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 388 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:49,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 564 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:45:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-11-23 23:45:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1525. [2024-11-23 23:45:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1314 states have (on average 1.1894977168949772) internal successors, (1563), 1332 states have internal predecessors, (1563), 163 states have call successors, (163), 47 states have call predecessors, (163), 47 states have return successors, (163), 145 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-23 23:45:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1889 transitions. [2024-11-23 23:45:50,472 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1889 transitions. Word has length 191 [2024-11-23 23:45:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:50,473 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 1889 transitions. [2024-11-23 23:45:50,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:45:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1889 transitions. [2024-11-23 23:45:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:45:50,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:50,476 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:50,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 23:45:50,477 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:50,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -455100119, now seen corresponding path program 1 times [2024-11-23 23:45:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143780337] [2024-11-23 23:45:50,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143780337] [2024-11-23 23:45:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143780337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:53,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:53,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 23:45:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506192844] [2024-11-23 23:45:53,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:53,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:45:53,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:53,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:45:53,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:45:53,326 INFO L87 Difference]: Start difference. First operand 1525 states and 1889 transitions. Second operand has 18 states, 16 states have (on average 4.9375) internal successors, (79), 18 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:45:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:55,851 INFO L93 Difference]: Finished difference Result 4180 states and 5229 transitions. [2024-11-23 23:45:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:45:55,852 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 18 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) Word has length 191 [2024-11-23 23:45:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:55,863 INFO L225 Difference]: With dead ends: 4180 [2024-11-23 23:45:55,863 INFO L226 Difference]: Without dead ends: 2707 [2024-11-23 23:45:55,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:45:55,866 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 760 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:55,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1152 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:45:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2024-11-23 23:45:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2205. [2024-11-23 23:45:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1994 states have (on average 1.1745235707121364) internal successors, (2342), 2012 states have internal predecessors, (2342), 163 states have call successors, (163), 47 states have call predecessors, (163), 47 states have return successors, (163), 145 states have call predecessors, (163), 163 states have call successors, (163) [2024-11-23 23:45:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2668 transitions. [2024-11-23 23:45:56,311 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2668 transitions. Word has length 191 [2024-11-23 23:45:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:56,311 INFO L471 AbstractCegarLoop]: Abstraction has 2205 states and 2668 transitions. [2024-11-23 23:45:56,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 18 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:45:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2668 transitions. [2024-11-23 23:45:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:45:56,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:56,315 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:45:56,316 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:56,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1484459417, now seen corresponding path program 1 times [2024-11-23 23:45:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052232506] [2024-11-23 23:45:56,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:45:56,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:45:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052232506] [2024-11-23 23:45:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052232506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:45:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:45:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:45:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084440191] [2024-11-23 23:45:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:58,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:45:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:58,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:45:58,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:45:58,172 INFO L87 Difference]: Start difference. First operand 2205 states and 2668 transitions. Second operand has 17 states, 15 states have (on average 5.266666666666667) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:46:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:00,479 INFO L93 Difference]: Finished difference Result 5097 states and 6156 transitions. [2024-11-23 23:46:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:46:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.266666666666667) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 191 [2024-11-23 23:46:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:00,491 INFO L225 Difference]: With dead ends: 5097 [2024-11-23 23:46:00,491 INFO L226 Difference]: Without dead ends: 2944 [2024-11-23 23:46:00,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:46:00,495 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 698 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:00,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1133 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:46:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2024-11-23 23:46:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2903. [2024-11-23 23:46:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2601 states have (on average 1.1718569780853518) internal successors, (3048), 2628 states have internal predecessors, (3048), 229 states have call successors, (229), 72 states have call predecessors, (229), 72 states have return successors, (229), 202 states have call predecessors, (229), 229 states have call successors, (229) [2024-11-23 23:46:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 3506 transitions. [2024-11-23 23:46:01,146 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 3506 transitions. Word has length 191 [2024-11-23 23:46:01,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:01,146 INFO L471 AbstractCegarLoop]: Abstraction has 2903 states and 3506 transitions. [2024-11-23 23:46:01,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.266666666666667) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:46:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 3506 transitions. [2024-11-23 23:46:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:46:01,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:01,150 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:01,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 23:46:01,150 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1877486427, now seen corresponding path program 1 times [2024-11-23 23:46:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:01,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334225203] [2024-11-23 23:46:01,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:01,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:01,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334225203] [2024-11-23 23:46:01,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334225203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:01,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:01,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:46:01,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322698274] [2024-11-23 23:46:01,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:01,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:46:01,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:01,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:46:01,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:46:01,910 INFO L87 Difference]: Start difference. First operand 2903 states and 3506 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:46:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:03,067 INFO L93 Difference]: Finished difference Result 6276 states and 7595 transitions. [2024-11-23 23:46:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:46:03,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 191 [2024-11-23 23:46:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:03,078 INFO L225 Difference]: With dead ends: 6276 [2024-11-23 23:46:03,078 INFO L226 Difference]: Without dead ends: 3429 [2024-11-23 23:46:03,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:46:03,081 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 210 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:03,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1126 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:46:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2024-11-23 23:46:03,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 3211. [2024-11-23 23:46:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 2909 states have (on average 1.1698178068064626) internal successors, (3403), 2936 states have internal predecessors, (3403), 229 states have call successors, (229), 72 states have call predecessors, (229), 72 states have return successors, (229), 202 states have call predecessors, (229), 229 states have call successors, (229) [2024-11-23 23:46:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 3861 transitions. [2024-11-23 23:46:03,668 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 3861 transitions. Word has length 191 [2024-11-23 23:46:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:03,669 INFO L471 AbstractCegarLoop]: Abstraction has 3211 states and 3861 transitions. [2024-11-23 23:46:03,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:46:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 3861 transitions. [2024-11-23 23:46:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:46:03,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:03,673 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:03,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-23 23:46:03,674 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:03,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1438700581, now seen corresponding path program 1 times [2024-11-23 23:46:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:03,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574079200] [2024-11-23 23:46:03,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:05,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574079200] [2024-11-23 23:46:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574079200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:05,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:46:05,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882331011] [2024-11-23 23:46:05,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:05,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:46:05,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:05,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:46:05,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:46:05,029 INFO L87 Difference]: Start difference. First operand 3211 states and 3861 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:46:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:06,688 INFO L93 Difference]: Finished difference Result 6333 states and 7587 transitions. [2024-11-23 23:46:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:46:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 191 [2024-11-23 23:46:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:06,701 INFO L225 Difference]: With dead ends: 6333 [2024-11-23 23:46:06,701 INFO L226 Difference]: Without dead ends: 3178 [2024-11-23 23:46:06,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:46:06,707 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 574 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:06,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 689 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:46:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2024-11-23 23:46:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2502. [2024-11-23 23:46:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2277 states have (on average 1.1515151515151516) internal successors, (2622), 2295 states have internal predecessors, (2622), 169 states have call successors, (169), 55 states have call predecessors, (169), 55 states have return successors, (169), 151 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-23 23:46:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 2960 transitions. [2024-11-23 23:46:07,385 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 2960 transitions. Word has length 191 [2024-11-23 23:46:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:07,385 INFO L471 AbstractCegarLoop]: Abstraction has 2502 states and 2960 transitions. [2024-11-23 23:46:07,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:46:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 2960 transitions. [2024-11-23 23:46:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-23 23:46:07,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:07,389 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:07,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-23 23:46:07,389 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:07,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1633060821, now seen corresponding path program 1 times [2024-11-23 23:46:07,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:07,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060735472] [2024-11-23 23:46:07,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060735472] [2024-11-23 23:46:10,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060735472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:10,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:10,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:46:10,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656196941] [2024-11-23 23:46:10,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:10,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:46:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:10,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:46:10,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:46:10,909 INFO L87 Difference]: Start difference. First operand 2502 states and 2960 transitions. Second operand has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 15 states have internal predecessors, (80), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:46:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:14,089 INFO L93 Difference]: Finished difference Result 5595 states and 6614 transitions. [2024-11-23 23:46:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:46:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 15 states have internal predecessors, (80), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 192 [2024-11-23 23:46:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:14,102 INFO L225 Difference]: With dead ends: 5595 [2024-11-23 23:46:14,103 INFO L226 Difference]: Without dead ends: 3153 [2024-11-23 23:46:14,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2024-11-23 23:46:14,108 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 370 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:14,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1840 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:46:14,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2024-11-23 23:46:14,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2468. [2024-11-23 23:46:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2243 states have (on average 1.1484618814088274) internal successors, (2576), 2261 states have internal predecessors, (2576), 169 states have call successors, (169), 55 states have call predecessors, (169), 55 states have return successors, (169), 151 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-23 23:46:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 2914 transitions. [2024-11-23 23:46:14,546 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 2914 transitions. Word has length 192 [2024-11-23 23:46:14,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:14,547 INFO L471 AbstractCegarLoop]: Abstraction has 2468 states and 2914 transitions. [2024-11-23 23:46:14,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 15 states have internal predecessors, (80), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-23 23:46:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 2914 transitions. [2024-11-23 23:46:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:46:14,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:14,549 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:14,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-23 23:46:14,549 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:14,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1417294, now seen corresponding path program 1 times [2024-11-23 23:46:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947225422] [2024-11-23 23:46:14,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:16,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:16,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947225422] [2024-11-23 23:46:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947225422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:16,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:46:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080002379] [2024-11-23 23:46:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:16,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:46:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:16,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:46:16,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:46:16,775 INFO L87 Difference]: Start difference. First operand 2468 states and 2914 transitions. Second operand has 17 states, 15 states have (on average 5.4) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:46:18,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:18,767 INFO L93 Difference]: Finished difference Result 6031 states and 7194 transitions. [2024-11-23 23:46:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:46:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.4) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) Word has length 193 [2024-11-23 23:46:18,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:18,780 INFO L225 Difference]: With dead ends: 6031 [2024-11-23 23:46:18,781 INFO L226 Difference]: Without dead ends: 3623 [2024-11-23 23:46:18,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:46:18,785 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 615 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:18,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1294 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:46:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-23 23:46:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 2468. [2024-11-23 23:46:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2243 states have (on average 1.1484618814088274) internal successors, (2576), 2261 states have internal predecessors, (2576), 169 states have call successors, (169), 55 states have call predecessors, (169), 55 states have return successors, (169), 151 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-23 23:46:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 2914 transitions. [2024-11-23 23:46:19,376 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 2914 transitions. Word has length 193 [2024-11-23 23:46:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:19,377 INFO L471 AbstractCegarLoop]: Abstraction has 2468 states and 2914 transitions. [2024-11-23 23:46:19,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.4) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:46:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 2914 transitions. [2024-11-23 23:46:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:46:19,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:19,379 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:19,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-23 23:46:19,379 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:19,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash -391609716, now seen corresponding path program 1 times [2024-11-23 23:46:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:19,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933618278] [2024-11-23 23:46:19,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933618278] [2024-11-23 23:46:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933618278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:20,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:20,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:46:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168851013] [2024-11-23 23:46:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:20,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:46:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:20,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:46:20,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:46:20,250 INFO L87 Difference]: Start difference. First operand 2468 states and 2914 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:46:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:21,867 INFO L93 Difference]: Finished difference Result 5339 states and 6301 transitions. [2024-11-23 23:46:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:46:21,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2024-11-23 23:46:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:21,876 INFO L225 Difference]: With dead ends: 5339 [2024-11-23 23:46:21,876 INFO L226 Difference]: Without dead ends: 2931 [2024-11-23 23:46:21,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:46:21,880 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 566 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:21,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 718 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:46:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2024-11-23 23:46:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2178. [2024-11-23 23:46:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2178 states, 1953 states have (on average 1.1459293394777266) internal successors, (2238), 1971 states have internal predecessors, (2238), 169 states have call successors, (169), 55 states have call predecessors, (169), 55 states have return successors, (169), 151 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-23 23:46:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2178 states to 2178 states and 2576 transitions. [2024-11-23 23:46:22,560 INFO L78 Accepts]: Start accepts. Automaton has 2178 states and 2576 transitions. Word has length 193 [2024-11-23 23:46:22,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:22,561 INFO L471 AbstractCegarLoop]: Abstraction has 2178 states and 2576 transitions. [2024-11-23 23:46:22,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:46:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2178 states and 2576 transitions. [2024-11-23 23:46:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-23 23:46:22,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:22,564 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:22,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-23 23:46:22,565 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:22,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1819775333, now seen corresponding path program 1 times [2024-11-23 23:46:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:22,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801637062] [2024-11-23 23:46:22,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:46:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801637062] [2024-11-23 23:46:23,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801637062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:23,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843496258] [2024-11-23 23:46:23,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:23,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:23,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:23,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:46:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:24,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 23:46:24,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:25,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:46:26,591 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 25 treesize of output 13 [2024-11-23 23:46:27,044 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 25 treesize of output 13 [2024-11-23 23:46:29,091 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 44 treesize of output 30 [2024-11-23 23:46:29,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:29,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2024-11-23 23:46:29,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:29,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:29,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-23 23:46:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:29,682 INFO L349 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2024-11-23 23:46:29,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 70 [2024-11-23 23:46:29,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 123 proven. 537 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-23 23:46:29,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843496258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:30,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:46:30,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2024-11-23 23:46:30,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880499382] [2024-11-23 23:46:30,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:30,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:46:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:30,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:46:30,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:46:30,773 INFO L87 Difference]: Start difference. First operand 2178 states and 2576 transitions. Second operand has 18 states, 16 states have (on average 8.5625) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:34,839 INFO L93 Difference]: Finished difference Result 3909 states and 4589 transitions. [2024-11-23 23:46:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:46:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.5625) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) Word has length 193 [2024-11-23 23:46:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:34,847 INFO L225 Difference]: With dead ends: 3909 [2024-11-23 23:46:34,847 INFO L226 Difference]: Without dead ends: 1791 [2024-11-23 23:46:34,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=415, Invalid=1937, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 23:46:34,851 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 329 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:34,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 985 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:46:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2024-11-23 23:46:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1709. [2024-11-23 23:46:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1507 states have (on average 1.13271400132714) internal successors, (1707), 1519 states have internal predecessors, (1707), 145 states have call successors, (145), 56 states have call predecessors, (145), 56 states have return successors, (145), 133 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-23 23:46:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 1997 transitions. [2024-11-23 23:46:35,499 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 1997 transitions. Word has length 193 [2024-11-23 23:46:35,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:35,499 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 1997 transitions. [2024-11-23 23:46:35,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.5625) internal successors, (137), 18 states have internal predecessors, (137), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:35,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 1997 transitions. [2024-11-23 23:46:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:46:35,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:35,502 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:35,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:46:35,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-23 23:46:35,703 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:35,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash 320602541, now seen corresponding path program 1 times [2024-11-23 23:46:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157763951] [2024-11-23 23:46:35,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:46:36,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157763951] [2024-11-23 23:46:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157763951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107068052] [2024-11-23 23:46:36,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:36,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:36,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:36,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:46:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:37,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-23 23:46:37,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:38,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:46:38,615 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 25 treesize of output 13 [2024-11-23 23:46:39,061 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 25 treesize of output 13 [2024-11-23 23:46:39,520 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 25 treesize of output 13 [2024-11-23 23:46:39,958 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 25 treesize of output 13 [2024-11-23 23:46:42,321 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 44 treesize of output 30 [2024-11-23 23:46:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:42,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2024-11-23 23:46:42,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:42,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:42,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-23 23:46:42,658 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 76 treesize of output 56 [2024-11-23 23:46:42,706 INFO L349 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2024-11-23 23:46:42,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 88 [2024-11-23 23:46:42,851 INFO L349 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2024-11-23 23:46:42,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 47 treesize of output 81 [2024-11-23 23:46:43,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:46:43,557 INFO L349 Elim1Store]: treesize reduction 128, result has 42.1 percent of original size [2024-11-23 23:46:43,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 115 treesize of output 166 [2024-11-23 23:46:47,993 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 0 case distinctions, treesize of input 61 treesize of output 37 [2024-11-23 23:46:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 141 proven. 546 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-23 23:46:48,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107068052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:48,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:46:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-23 23:46:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277371964] [2024-11-23 23:46:48,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:48,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:46:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:48,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:46:48,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:46:48,958 INFO L87 Difference]: Start difference. First operand 1709 states and 1997 transitions. Second operand has 19 states, 17 states have (on average 9.411764705882353) internal successors, (160), 19 states have internal predecessors, (160), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:51,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:51,842 INFO L93 Difference]: Finished difference Result 2842 states and 3306 transitions. [2024-11-23 23:46:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:46:51,843 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 9.411764705882353) internal successors, (160), 19 states have internal predecessors, (160), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) Word has length 196 [2024-11-23 23:46:51,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:51,848 INFO L225 Difference]: With dead ends: 2842 [2024-11-23 23:46:51,848 INFO L226 Difference]: Without dead ends: 1197 [2024-11-23 23:46:51,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 23:46:51,851 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 510 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:51,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 856 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:46:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-23 23:46:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1139. [2024-11-23 23:46:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 985 states have (on average 1.1248730964467004) internal successors, (1108), 991 states have internal predecessors, (1108), 109 states have call successors, (109), 44 states have call predecessors, (109), 44 states have return successors, (109), 103 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-23 23:46:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1326 transitions. [2024-11-23 23:46:52,388 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1326 transitions. Word has length 196 [2024-11-23 23:46:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:52,389 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1326 transitions. [2024-11-23 23:46:52,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 9.411764705882353) internal successors, (160), 19 states have internal predecessors, (160), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1326 transitions. [2024-11-23 23:46:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:46:52,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:52,391 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:52,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:46:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-23 23:46:52,593 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:52,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1612500883, now seen corresponding path program 1 times [2024-11-23 23:46:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042033801] [2024-11-23 23:46:52,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:46:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042033801] [2024-11-23 23:46:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042033801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254368757] [2024-11-23 23:46:53,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:53,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:53,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:46:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:54,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 23:46:54,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:54,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:46:54,974 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 25 treesize of output 13 [2024-11-23 23:46:55,138 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 25 treesize of output 13 [2024-11-23 23:46:55,298 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 25 treesize of output 13 [2024-11-23 23:46:55,722 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 35 treesize of output 23 [2024-11-23 23:46:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 137 proven. 540 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-11-23 23:46:55,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254368757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:56,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:46:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2024-11-23 23:46:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103863132] [2024-11-23 23:46:56,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:46:56,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:46:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:56,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:46:56,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:46:56,026 INFO L87 Difference]: Start difference. First operand 1139 states and 1326 transitions. Second operand has 22 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:58,645 INFO L93 Difference]: Finished difference Result 1737 states and 2007 transitions. [2024-11-23 23:46:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:46:58,646 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) Word has length 196 [2024-11-23 23:46:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:58,649 INFO L225 Difference]: With dead ends: 1737 [2024-11-23 23:46:58,649 INFO L226 Difference]: Without dead ends: 662 [2024-11-23 23:46:58,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=376, Invalid=1786, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:46:58,651 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 302 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:58,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1418 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:46:58,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-23 23:46:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 628. [2024-11-23 23:46:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 520 states have (on average 1.1057692307692308) internal successors, (575), 523 states have internal predecessors, (575), 73 states have call successors, (73), 34 states have call predecessors, (73), 34 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:46:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 721 transitions. [2024-11-23 23:46:58,923 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 721 transitions. Word has length 196 [2024-11-23 23:46:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:58,923 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 721 transitions. [2024-11-23 23:46:58,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:46:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 721 transitions. [2024-11-23 23:46:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:46:58,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:58,925 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:58,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:46:59,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-23 23:46:59,125 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:46:59,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2063866252, now seen corresponding path program 1 times [2024-11-23 23:46:59,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:46:59,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056008829] [2024-11-23 23:46:59,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:59,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:46:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:46:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:46:59,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056008829] [2024-11-23 23:46:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056008829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:46:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:46:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:46:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998079708] [2024-11-23 23:46:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:46:59,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:46:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:46:59,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:46:59,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:59,262 INFO L87 Difference]: Start difference. First operand 628 states and 721 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:46:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:59,599 INFO L93 Difference]: Finished difference Result 1088 states and 1251 transitions. [2024-11-23 23:46:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:46:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 196 [2024-11-23 23:46:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:59,605 INFO L225 Difference]: With dead ends: 1088 [2024-11-23 23:46:59,605 INFO L226 Difference]: Without dead ends: 532 [2024-11-23 23:46:59,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:46:59,607 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:59,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 483 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:46:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-23 23:47:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2024-11-23 23:47:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 424 states have (on average 1.096698113207547) internal successors, (465), 427 states have internal predecessors, (465), 73 states have call successors, (73), 34 states have call predecessors, (73), 34 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:47:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 611 transitions. [2024-11-23 23:47:00,021 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 611 transitions. Word has length 196 [2024-11-23 23:47:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:00,021 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 611 transitions. [2024-11-23 23:47:00,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 611 transitions. [2024-11-23 23:47:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:47:00,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:00,023 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:00,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-23 23:47:00,023 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:00,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash -326702483, now seen corresponding path program 1 times [2024-11-23 23:47:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525770142] [2024-11-23 23:47:00,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:00,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 30 proven. 36 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:47:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525770142] [2024-11-23 23:47:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525770142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251961522] [2024-11-23 23:47:01,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:01,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:01,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:47:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:01,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-23 23:47:01,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:01,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:47:02,571 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 25 treesize of output 13 [2024-11-23 23:47:03,023 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 25 treesize of output 13 [2024-11-23 23:47:03,493 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 25 treesize of output 13 [2024-11-23 23:47:03,995 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 25 treesize of output 13 [2024-11-23 23:47:04,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-23 23:47:04,918 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 25 treesize of output 13 [2024-11-23 23:47:07,326 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 [2024-11-23 23:47:07,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2024-11-23 23:47:07,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:07,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:07,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:07,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2024-11-23 23:47:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 20 proven. 588 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-11-23 23:47:07,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:47:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251961522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:10,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:47:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2024-11-23 23:47:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136478301] [2024-11-23 23:47:10,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:47:10,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:47:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:10,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:47:10,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 23:47:10,260 INFO L87 Difference]: Start difference. First operand 532 states and 611 transitions. Second operand has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 23 states have internal predecessors, (144), 9 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 7 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-23 23:47:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:14,318 INFO L93 Difference]: Finished difference Result 953 states and 1086 transitions. [2024-11-23 23:47:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 23:47:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 23 states have internal predecessors, (144), 9 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 7 states have call predecessors, (46), 9 states have call successors, (46) Word has length 196 [2024-11-23 23:47:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:14,322 INFO L225 Difference]: With dead ends: 953 [2024-11-23 23:47:14,322 INFO L226 Difference]: Without dead ends: 493 [2024-11-23 23:47:14,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=600, Invalid=3306, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 23:47:14,324 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 456 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:14,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 970 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:47:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-23 23:47:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 459. [2024-11-23 23:47:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 347 states have (on average 1.0835734870317002) internal successors, (376), 350 states have internal predecessors, (376), 73 states have call successors, (73), 38 states have call predecessors, (73), 38 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:47:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 522 transitions. [2024-11-23 23:47:14,570 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 522 transitions. Word has length 196 [2024-11-23 23:47:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:14,571 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 522 transitions. [2024-11-23 23:47:14,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.857142857142857) internal successors, (144), 23 states have internal predecessors, (144), 9 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (46), 7 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-23 23:47:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 522 transitions. [2024-11-23 23:47:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-23 23:47:14,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:14,573 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:14,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:47:14,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-23 23:47:14,774 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:14,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1796337112, now seen corresponding path program 1 times [2024-11-23 23:47:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:14,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626115935] [2024-11-23 23:47:14,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:14,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:15,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626115935] [2024-11-23 23:47:15,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626115935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:47:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540805821] [2024-11-23 23:47:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:15,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:47:15,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:15,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:47:15,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:47:15,465 INFO L87 Difference]: Start difference. First operand 459 states and 522 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:16,046 INFO L93 Difference]: Finished difference Result 842 states and 959 transitions. [2024-11-23 23:47:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:47:16,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 198 [2024-11-23 23:47:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:16,050 INFO L225 Difference]: With dead ends: 842 [2024-11-23 23:47:16,050 INFO L226 Difference]: Without dead ends: 459 [2024-11-23 23:47:16,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:47:16,051 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 192 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:16,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 372 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:47:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-23 23:47:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2024-11-23 23:47:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 347 states have (on average 1.07492795389049) internal successors, (373), 350 states have internal predecessors, (373), 73 states have call successors, (73), 38 states have call predecessors, (73), 38 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:47:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2024-11-23 23:47:16,462 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 198 [2024-11-23 23:47:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:16,463 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2024-11-23 23:47:16,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2024-11-23 23:47:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-23 23:47:16,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:16,464 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:16,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-23 23:47:16,465 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:16,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1255102451, now seen corresponding path program 1 times [2024-11-23 23:47:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882525829] [2024-11-23 23:47:16,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:47:18,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882525829] [2024-11-23 23:47:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882525829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135044906] [2024-11-23 23:47:18,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:18,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:18,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:47:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:18,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:47:18,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:19,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:47:20,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-11-23 23:47:20,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:20,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 26 [2024-11-23 23:47:20,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:20,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 26 treesize of output 28 [2024-11-23 23:47:21,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:47:21,137 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 85 treesize of output 73 [2024-11-23 23:47:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 493 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-23 23:47:21,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:47:22,549 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 494 treesize of output 446 [2024-11-23 23:47:22,602 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 35 treesize of output 27 [2024-11-23 23:47:22,644 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 35 treesize of output 27 [2024-11-23 23:47:22,689 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 35 treesize of output 27 [2024-11-23 23:47:22,730 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 35 treesize of output 27 [2024-11-23 23:47:22,775 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 35 treesize of output 27 [2024-11-23 23:47:22,816 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 35 treesize of output 27 [2024-11-23 23:47:22,860 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 35 treesize of output 27 [2024-11-23 23:47:22,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:22,947 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 35 treesize of output 27 [2024-11-23 23:47:22,988 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 35 treesize of output 27 [2024-11-23 23:47:23,032 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 35 treesize of output 27 [2024-11-23 23:47:23,073 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 35 treesize of output 27 [2024-11-23 23:47:23,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:23,158 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 35 treesize of output 27 [2024-11-23 23:47:23,202 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 35 treesize of output 27 [2024-11-23 23:47:23,240 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 35 treesize of output 27 [2024-11-23 23:47:23,283 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 35 treesize of output 27 [2024-11-23 23:47:23,325 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 35 treesize of output 27 [2024-11-23 23:47:23,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:23,411 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 35 treesize of output 27 [2024-11-23 23:47:23,455 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 35 treesize of output 27 [2024-11-23 23:47:23,500 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 35 treesize of output 27 [2024-11-23 23:47:23,547 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 35 treesize of output 27 [2024-11-23 23:47:23,587 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 35 treesize of output 27 [2024-11-23 23:47:23,630 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 35 treesize of output 27 [2024-11-23 23:47:23,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:23,711 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 35 treesize of output 27 [2024-11-23 23:47:23,750 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 35 treesize of output 27 [2024-11-23 23:47:23,794 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 35 treesize of output 27 [2024-11-23 23:47:23,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:23,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2024-11-23 23:47:23,925 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 35 treesize of output 27 [2024-11-23 23:47:23,967 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 35 treesize of output 27 [2024-11-23 23:47:24,008 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 35 treesize of output 27 [2024-11-23 23:47:24,048 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 35 treesize of output 27 [2024-11-23 23:47:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135044906] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:47:24,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 12] total 28 [2024-11-23 23:47:24,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103757322] [2024-11-23 23:47:24,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:24,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:47:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:24,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:47:24,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:47:24,088 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:25,447 INFO L93 Difference]: Finished difference Result 1188 states and 1340 transitions. [2024-11-23 23:47:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:47:25,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 200 [2024-11-23 23:47:25,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:25,452 INFO L225 Difference]: With dead ends: 1188 [2024-11-23 23:47:25,452 INFO L226 Difference]: Without dead ends: 805 [2024-11-23 23:47:25,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 356 SyntacticMatches, 38 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:47:25,453 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 178 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:25,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1250 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:47:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-23 23:47:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 543. [2024-11-23 23:47:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 431 states have (on average 1.0835266821345708) internal successors, (467), 434 states have internal predecessors, (467), 73 states have call successors, (73), 38 states have call predecessors, (73), 38 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:47:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 613 transitions. [2024-11-23 23:47:25,801 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 613 transitions. Word has length 200 [2024-11-23 23:47:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:25,802 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 613 transitions. [2024-11-23 23:47:25,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 613 transitions. [2024-11-23 23:47:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-23 23:47:25,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:25,803 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:25,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:47:26,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-23 23:47:26,003 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:26,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash -575044081, now seen corresponding path program 1 times [2024-11-23 23:47:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:26,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747757167] [2024-11-23 23:47:26,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747757167] [2024-11-23 23:47:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747757167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:26,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:26,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:47:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485725277] [2024-11-23 23:47:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:26,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:47:26,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:26,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:47:26,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:47:26,361 INFO L87 Difference]: Start difference. First operand 543 states and 613 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:27,179 INFO L93 Difference]: Finished difference Result 1164 states and 1309 transitions. [2024-11-23 23:47:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:47:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 200 [2024-11-23 23:47:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:27,183 INFO L225 Difference]: With dead ends: 1164 [2024-11-23 23:47:27,183 INFO L226 Difference]: Without dead ends: 697 [2024-11-23 23:47:27,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:47:27,184 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 315 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:27,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 504 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:47:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-23 23:47:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 547. [2024-11-23 23:47:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 434 states have (on average 1.0783410138248848) internal successors, (468), 437 states have internal predecessors, (468), 73 states have call successors, (73), 39 states have call predecessors, (73), 39 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:47:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 614 transitions. [2024-11-23 23:47:27,532 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 614 transitions. Word has length 200 [2024-11-23 23:47:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:27,532 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 614 transitions. [2024-11-23 23:47:27,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 614 transitions. [2024-11-23 23:47:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-23 23:47:27,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:27,533 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:27,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-23 23:47:27,534 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:27,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1006955957, now seen corresponding path program 1 times [2024-11-23 23:47:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26701337] [2024-11-23 23:47:27,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:27,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26701337] [2024-11-23 23:47:27,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26701337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:27,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:27,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:47:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479332052] [2024-11-23 23:47:27,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:27,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:47:27,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:27,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:47:27,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:47:27,892 INFO L87 Difference]: Start difference. First operand 547 states and 614 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:28,737 INFO L93 Difference]: Finished difference Result 1168 states and 1308 transitions. [2024-11-23 23:47:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:47:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 200 [2024-11-23 23:47:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:28,741 INFO L225 Difference]: With dead ends: 1168 [2024-11-23 23:47:28,741 INFO L226 Difference]: Without dead ends: 701 [2024-11-23 23:47:28,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:47:28,742 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 259 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:28,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 746 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:47:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-23 23:47:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 310. [2024-11-23 23:47:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 247 states have (on average 1.0809716599190284) internal successors, (267), 248 states have internal predecessors, (267), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 349 transitions. [2024-11-23 23:47:29,076 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 349 transitions. Word has length 200 [2024-11-23 23:47:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:29,076 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 349 transitions. [2024-11-23 23:47:29,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 349 transitions. [2024-11-23 23:47:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-23 23:47:29,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:29,078 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:29,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-23 23:47:29,078 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:29,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -326897587, now seen corresponding path program 1 times [2024-11-23 23:47:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:29,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658922269] [2024-11-23 23:47:29,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658922269] [2024-11-23 23:47:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658922269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:47:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675513262] [2024-11-23 23:47:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:30,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:47:30,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:30,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:47:30,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:47:30,057 INFO L87 Difference]: Start difference. First operand 310 states and 349 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:30,629 INFO L93 Difference]: Finished difference Result 616 states and 693 transitions. [2024-11-23 23:47:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:47:30,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 200 [2024-11-23 23:47:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:30,633 INFO L225 Difference]: With dead ends: 616 [2024-11-23 23:47:30,633 INFO L226 Difference]: Without dead ends: 386 [2024-11-23 23:47:30,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:47:30,634 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 79 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:30,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1888 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:47:30,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-23 23:47:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 306. [2024-11-23 23:47:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 243 states have (on average 1.0781893004115226) internal successors, (262), 244 states have internal predecessors, (262), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2024-11-23 23:47:30,836 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 200 [2024-11-23 23:47:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:30,837 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2024-11-23 23:47:30,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:30,837 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2024-11-23 23:47:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-23 23:47:30,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:30,838 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:30,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-23 23:47:30,839 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:30,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash -760261921, now seen corresponding path program 1 times [2024-11-23 23:47:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104566362] [2024-11-23 23:47:30,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104566362] [2024-11-23 23:47:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104566362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:31,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:31,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:47:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601793149] [2024-11-23 23:47:31,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:31,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:47:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:31,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:47:31,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:47:31,769 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:32,538 INFO L93 Difference]: Finished difference Result 390 states and 434 transitions. [2024-11-23 23:47:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:47:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 202 [2024-11-23 23:47:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:32,542 INFO L225 Difference]: With dead ends: 390 [2024-11-23 23:47:32,542 INFO L226 Difference]: Without dead ends: 388 [2024-11-23 23:47:32,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:47:32,543 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 159 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:32,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 821 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:47:32,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-23 23:47:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 377. [2024-11-23 23:47:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 314 states have (on average 1.0764331210191083) internal successors, (338), 315 states have internal predecessors, (338), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 420 transitions. [2024-11-23 23:47:32,890 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 420 transitions. Word has length 202 [2024-11-23 23:47:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:32,891 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 420 transitions. [2024-11-23 23:47:32,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 420 transitions. [2024-11-23 23:47:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-23 23:47:32,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:32,893 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:32,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-11-23 23:47:32,893 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:32,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:32,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1186702307, now seen corresponding path program 1 times [2024-11-23 23:47:32,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181867886] [2024-11-23 23:47:32,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181867886] [2024-11-23 23:47:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181867886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:33,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:33,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:47:33,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176098408] [2024-11-23 23:47:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:33,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:47:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:33,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:47:33,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:47:33,626 INFO L87 Difference]: Start difference. First operand 377 states and 420 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:34,181 INFO L93 Difference]: Finished difference Result 445 states and 492 transitions. [2024-11-23 23:47:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:47:34,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 203 [2024-11-23 23:47:34,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:34,184 INFO L225 Difference]: With dead ends: 445 [2024-11-23 23:47:34,184 INFO L226 Difference]: Without dead ends: 443 [2024-11-23 23:47:34,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:47:34,185 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 39 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:34,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 940 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:47:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-23 23:47:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 361. [2024-11-23 23:47:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 298 states have (on average 1.0738255033557047) internal successors, (320), 299 states have internal predecessors, (320), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 402 transitions. [2024-11-23 23:47:34,394 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 402 transitions. Word has length 203 [2024-11-23 23:47:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:34,394 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 402 transitions. [2024-11-23 23:47:34,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 402 transitions. [2024-11-23 23:47:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 23:47:34,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:34,395 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:34,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-23 23:47:34,395 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:34,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2012469724, now seen corresponding path program 1 times [2024-11-23 23:47:34,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:34,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712410609] [2024-11-23 23:47:34,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:34,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:47:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712410609] [2024-11-23 23:47:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712410609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731738827] [2024-11-23 23:47:36,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:36,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:36,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:36,226 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:36,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:47:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:36,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-23 23:47:36,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:37,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:47:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:37,659 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 29 treesize of output 13 [2024-11-23 23:47:38,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:38,139 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 29 treesize of output 13 [2024-11-23 23:47:38,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:38,628 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 29 treesize of output 13 [2024-11-23 23:47:39,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:39,114 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 29 treesize of output 13 [2024-11-23 23:47:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:39,613 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 29 treesize of output 13 [2024-11-23 23:47:40,118 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 [2024-11-23 23:47:42,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-23 23:47:42,579 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 53 treesize of output 37 [2024-11-23 23:47:42,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:42,609 INFO L349 Elim1Store]: treesize reduction 42, result has 23.6 percent of original size [2024-11-23 23:47:42,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 66 [2024-11-23 23:47:42,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:42,728 INFO L349 Elim1Store]: treesize reduction 16, result has 61.9 percent of original size [2024-11-23 23:47:42,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 57 [2024-11-23 23:47:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:43,378 INFO L349 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2024-11-23 23:47:43,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 105 treesize of output 96 [2024-11-23 23:47:44,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:47:44,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 170 treesize of output 264 [2024-11-23 23:47:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 53 proven. 558 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-11-23 23:47:45,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:47:46,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731738827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:46,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:47:46,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2024-11-23 23:47:46,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886409869] [2024-11-23 23:47:46,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:47:46,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:47:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:46,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:47:46,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:47:46,407 INFO L87 Difference]: Start difference. First operand 361 states and 402 transitions. Second operand has 23 states, 21 states have (on average 7.476190476190476) internal successors, (157), 23 states have internal predecessors, (157), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:47:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:49,589 INFO L93 Difference]: Finished difference Result 654 states and 728 transitions. [2024-11-23 23:47:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:47:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 7.476190476190476) internal successors, (157), 23 states have internal predecessors, (157), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) Word has length 204 [2024-11-23 23:47:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:49,592 INFO L225 Difference]: With dead ends: 654 [2024-11-23 23:47:49,593 INFO L226 Difference]: Without dead ends: 373 [2024-11-23 23:47:49,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=334, Invalid=1472, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 23:47:49,594 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 382 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:49,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 900 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:47:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-23 23:47:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 349. [2024-11-23 23:47:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 286 states have (on average 1.062937062937063) internal successors, (304), 287 states have internal predecessors, (304), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 386 transitions. [2024-11-23 23:47:49,815 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 386 transitions. Word has length 204 [2024-11-23 23:47:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:49,815 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 386 transitions. [2024-11-23 23:47:49,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 7.476190476190476) internal successors, (157), 23 states have internal predecessors, (157), 8 states have call successors, (46), 4 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 8 states have call successors, (46) [2024-11-23 23:47:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 386 transitions. [2024-11-23 23:47:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 23:47:49,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:49,818 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:49,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:47:50,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-23 23:47:50,018 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1570221796, now seen corresponding path program 1 times [2024-11-23 23:47:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939732135] [2024-11-23 23:47:50,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:53,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:53,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939732135] [2024-11-23 23:47:53,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939732135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:53,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:53,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:47:53,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872854728] [2024-11-23 23:47:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:53,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:47:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:53,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:47:53,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:47:53,638 INFO L87 Difference]: Start difference. First operand 349 states and 386 transitions. Second operand has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:47:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:55,858 INFO L93 Difference]: Finished difference Result 367 states and 405 transitions. [2024-11-23 23:47:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:47:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 204 [2024-11-23 23:47:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:55,862 INFO L225 Difference]: With dead ends: 367 [2024-11-23 23:47:55,862 INFO L226 Difference]: Without dead ends: 365 [2024-11-23 23:47:55,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:47:55,863 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 579 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:55,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1012 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:47:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-23 23:47:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 351. [2024-11-23 23:47:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 288 states have (on average 1.0659722222222223) internal successors, (307), 289 states have internal predecessors, (307), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 389 transitions. [2024-11-23 23:47:56,106 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 389 transitions. Word has length 204 [2024-11-23 23:47:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:56,106 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 389 transitions. [2024-11-23 23:47:56,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 4 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 23:47:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 389 transitions. [2024-11-23 23:47:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 23:47:56,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:56,107 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:56,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-11-23 23:47:56,108 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:56,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash -949738138, now seen corresponding path program 1 times [2024-11-23 23:47:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911734599] [2024-11-23 23:47:56,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:47:56,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911734599] [2024-11-23 23:47:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911734599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:47:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:47:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:47:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430430185] [2024-11-23 23:47:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:47:56,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:47:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:47:56,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:47:56,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:47:56,395 INFO L87 Difference]: Start difference. First operand 351 states and 389 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:47:56,731 INFO L93 Difference]: Finished difference Result 622 states and 690 transitions. [2024-11-23 23:47:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:47:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 204 [2024-11-23 23:47:56,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:47:56,735 INFO L225 Difference]: With dead ends: 622 [2024-11-23 23:47:56,735 INFO L226 Difference]: Without dead ends: 351 [2024-11-23 23:47:56,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:47:56,736 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 15 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:47:56,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 467 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:47:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-23 23:47:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2024-11-23 23:47:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 288 states have (on average 1.0590277777777777) internal successors, (305), 289 states have internal predecessors, (305), 41 states have call successors, (41), 21 states have call predecessors, (41), 21 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:47:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 387 transitions. [2024-11-23 23:47:56,906 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 387 transitions. Word has length 204 [2024-11-23 23:47:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:47:56,906 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 387 transitions. [2024-11-23 23:47:56,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:47:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 387 transitions. [2024-11-23 23:47:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 23:47:56,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:47:56,907 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:47:56,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-11-23 23:47:56,907 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:47:56,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:47:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1264711975, now seen corresponding path program 1 times [2024-11-23 23:47:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:47:56,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384031298] [2024-11-23 23:47:56,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:47:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:47:58,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:47:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384031298] [2024-11-23 23:47:58,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384031298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:47:58,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349014915] [2024-11-23 23:47:58,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:47:58,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:47:58,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:47:58,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:47:58,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:47:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:47:58,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 23:47:58,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:47:59,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 23:47:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:47:59,582 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 29 treesize of output 13 [2024-11-23 23:48:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:00,015 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 29 treesize of output 13 [2024-11-23 23:48:00,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:00,457 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 29 treesize of output 13 [2024-11-23 23:48:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:00,934 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 29 treesize of output 13 [2024-11-23 23:48:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:01,365 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 29 treesize of output 13 [2024-11-23 23:48:01,823 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 29 treesize of output 13 [2024-11-23 23:48:03,975 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 44 treesize of output 30 [2024-11-23 23:48:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:03,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 50 [2024-11-23 23:48:03,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:04,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:04,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-23 23:48:04,340 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 80 treesize of output 60 [2024-11-23 23:48:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:04,410 INFO L349 Elim1Store]: treesize reduction 74, result has 26.7 percent of original size [2024-11-23 23:48:04,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 100 [2024-11-23 23:48:04,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:04,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:04,975 INFO L349 Elim1Store]: treesize reduction 128, result has 37.6 percent of original size [2024-11-23 23:48:04,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 87 treesize of output 151 [2024-11-23 23:48:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:48:18,316 WARN L286 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 853 DAG size of output: 725 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-23 23:48:18,317 INFO L349 Elim1Store]: treesize reduction 360, result has 79.8 percent of original size [2024-11-23 23:48:18,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 189 case distinctions, treesize of input 310 treesize of output 1627 [2024-11-23 23:55:50,193 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-23 23:55:50,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-23 23:55:50,195 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-23 23:55:50,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:55:50,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:55:50,396 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.pushInner(QuantifierPusher.java:274) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 67 more [2024-11-23 23:55:50,403 INFO L158 Benchmark]: Toolchain (without parser) took 691430.62ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 118.4MB in the beginning and 590.7MB in the end (delta: -472.2MB). Peak memory consumption was 959.5MB. Max. memory is 16.1GB. [2024-11-23 23:55:50,403 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:55:50,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.58ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 102.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:55:50,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.45ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 98.1MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:55:50,404 INFO L158 Benchmark]: Boogie Preprocessor took 122.43ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 93.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:55:50,404 INFO L158 Benchmark]: RCFGBuilder took 1286.84ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 104.4MB in the end (delta: -11.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-23 23:55:50,405 INFO L158 Benchmark]: TraceAbstraction took 689340.40ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 103.8MB in the beginning and 590.7MB in the end (delta: -486.9MB). Peak memory consumption was 944.8MB. Max. memory is 16.1GB. [2024-11-23 23:55:50,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.58ms. Allocated memory is still 142.6MB. Free memory was 118.2MB in the beginning and 102.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.45ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 98.1MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 122.43ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 93.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1286.84ms. Allocated memory is still 142.6MB. Free memory was 93.2MB in the beginning and 104.4MB in the end (delta: -11.2MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * TraceAbstraction took 689340.40ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 103.8MB in the beginning and 590.7MB in the end (delta: -486.9MB). Peak memory consumption was 944.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC --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 a747c3e70b2dac762cd875ff4c6b8c1b6f4dc1a373b46f7848c57180a86a2166 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:55:53,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:55:53,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-23 23:55:53,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:55:53,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:55:53,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:55:53,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:55:53,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:55:53,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:55:53,631 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:55:53,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:55:53,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:55:53,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:55:53,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:55:53,633 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:55:53,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:55:53,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:55:53,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:55:53,637 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:55:53,638 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:55:53,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:55:53,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:55:53,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:55:53,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:55:53,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:55:53,643 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:55:53,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:55:53,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:55:53,644 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_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC 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 -> a747c3e70b2dac762cd875ff4c6b8c1b6f4dc1a373b46f7848c57180a86a2166 [2024-11-23 23:55:54,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:55:54,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:55:54,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:55:54,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:55:54,055 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:55:54,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:55:57,610 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/0cd7cb5b8/25d23cd9235346209b72e9cf38d25d6f/FLAGe2f4a8138 [2024-11-23 23:55:57,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:55:57,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:55:57,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/0cd7cb5b8/25d23cd9235346209b72e9cf38d25d6f/FLAGe2f4a8138 [2024-11-23 23:55:58,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/data/0cd7cb5b8/25d23cd9235346209b72e9cf38d25d6f [2024-11-23 23:55:58,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:55:58,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:55:58,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:55:58,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:55:58,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:55:58,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3d70c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58, skipping insertion in model container [2024-11-23 23:55:58,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:55:58,291 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_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i[917,930] [2024-11-23 23:55:58,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:55:58,451 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:55:58,463 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_a747cc4a-2879-485f-8cd0-63951c819fb1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-85.i[917,930] [2024-11-23 23:55:58,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:55:58,554 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:55:58,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58 WrapperNode [2024-11-23 23:55:58,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:55:58,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:55:58,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:55:58,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:55:58,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,633 INFO L138 Inliner]: procedures = 34, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 535 [2024-11-23 23:55:58,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:55:58,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:55:58,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:55:58,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:55:58,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,682 INFO L175 MemorySlicer]: Split 140 memory accesses to 6 slices as follows [2, 70, 25, 7, 29, 7]. 50 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 3, 1, 2, 1]. The 33 writes are split as follows [0, 23, 4, 3, 2, 1]. [2024-11-23 23:55:58,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:55:58,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:55:58,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:55:58,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:55:58,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (1/1) ... [2024-11-23 23:55:58,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:55:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:55:58,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:55:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:55:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-11-23 23:55:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2024-11-23 23:55:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-23 23:55:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-23 23:55:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2024-11-23 23:55:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#5 [2024-11-23 23:55:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:55:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:55:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:55:58,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:55:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-23 23:55:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2024-11-23 23:55:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-23 23:55:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-23 23:55:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-23 23:55:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2024-11-23 23:55:59,151 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:55:59,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:56:00,158 INFO L? ?]: Removed 121 outVars from TransFormulas that were not future-live. [2024-11-23 23:56:00,159 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:56:00,173 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:56:00,174 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:56:00,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:00 BoogieIcfgContainer [2024-11-23 23:56:00,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:56:00,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:56:00,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:56:00,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:56:00,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:55:58" (1/3) ... [2024-11-23 23:56:00,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d3c263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:00, skipping insertion in model container [2024-11-23 23:56:00,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:55:58" (2/3) ... [2024-11-23 23:56:00,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d3c263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:56:00, skipping insertion in model container [2024-11-23 23:56:00,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:56:00" (3/3) ... [2024-11-23 23:56:00,189 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-85.i [2024-11-23 23:56:00,209 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:56:00,213 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-85.i that has 2 procedures, 131 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:56:00,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:56:00,357 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;@4c8f972b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:56:00,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:56:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:56:00,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:00,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:00,388 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:00,388 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:00,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -632733008, now seen corresponding path program 1 times [2024-11-23 23:56:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:00,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626297352] [2024-11-23 23:56:00,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:00,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:00,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:56:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:00,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:56:00,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-23 23:56:01,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:01,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626297352] [2024-11-23 23:56:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626297352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:01,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:56:01,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46838117] [2024-11-23 23:56:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:01,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:56:01,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:01,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:56:01,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:56:01,048 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:56:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:01,081 INFO L93 Difference]: Finished difference Result 255 states and 399 transitions. [2024-11-23 23:56:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:56:01,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2024-11-23 23:56:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:01,090 INFO L225 Difference]: With dead ends: 255 [2024-11-23 23:56:01,090 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 23:56:01,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:56:01,097 INFO L435 NwaCegarLoop]: 184 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, 184 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 [2024-11-23 23:56:01,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:56:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 23:56:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-23 23:56:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-23 23:56:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2024-11-23 23:56:01,151 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 179 [2024-11-23 23:56:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:01,152 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2024-11-23 23:56:01,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 23:56:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2024-11-23 23:56:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:01,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:01,161 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:01,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:56:01,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:01,362 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:01,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash -493224382, now seen corresponding path program 1 times [2024-11-23 23:56:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:01,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56723829] [2024-11-23 23:56:01,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:01,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:01,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:01,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:01,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:56:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:01,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:56:01,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:01,984 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 12 treesize of output 8 [2024-11-23 23:56:02,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-23 23:56:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:56:02,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:02,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56723829] [2024-11-23 23:56:02,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56723829] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:02,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2024-11-23 23:56:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859189760] [2024-11-23 23:56:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:02,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:02,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:02,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:02,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:56:02,787 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:03,360 INFO L93 Difference]: Finished difference Result 341 states and 493 transitions. [2024-11-23 23:56:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:56:03,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2024-11-23 23:56:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:03,368 INFO L225 Difference]: With dead ends: 341 [2024-11-23 23:56:03,370 INFO L226 Difference]: Without dead ends: 217 [2024-11-23 23:56:03,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:56:03,373 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 124 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:03,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1072 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:56:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-23 23:56:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2024-11-23 23:56:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.3352941176470587) internal successors, (227), 171 states have internal predecessors, (227), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 309 transitions. [2024-11-23 23:56:03,448 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 309 transitions. Word has length 179 [2024-11-23 23:56:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:03,449 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 309 transitions. [2024-11-23 23:56:03,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 309 transitions. [2024-11-23 23:56:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:03,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:03,457 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:03,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:03,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:03,661 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:03,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:03,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1514292736, now seen corresponding path program 1 times [2024-11-23 23:56:03,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:03,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907585292] [2024-11-23 23:56:03,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:03,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:03,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:03,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:56:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:04,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:56:04,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:04,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-23 23:56:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:04,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:04,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907585292] [2024-11-23 23:56:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907585292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:04,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:56:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626137082] [2024-11-23 23:56:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:04,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:56:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:04,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:56:04,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:04,195 INFO L87 Difference]: Start difference. First operand 214 states and 309 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:05,511 INFO L93 Difference]: Finished difference Result 426 states and 615 transitions. [2024-11-23 23:56:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2024-11-23 23:56:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:05,520 INFO L225 Difference]: With dead ends: 426 [2024-11-23 23:56:05,523 INFO L226 Difference]: Without dead ends: 215 [2024-11-23 23:56:05,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:05,525 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 64 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:05,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 610 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:56:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-23 23:56:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2024-11-23 23:56:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 169 states have (on average 1.331360946745562) internal successors, (225), 170 states have internal predecessors, (225), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 307 transitions. [2024-11-23 23:56:05,575 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 307 transitions. Word has length 179 [2024-11-23 23:56:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:05,577 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 307 transitions. [2024-11-23 23:56:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 307 transitions. [2024-11-23 23:56:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:05,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:05,581 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:05,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:56:05,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:05,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:05,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -171333863, now seen corresponding path program 1 times [2024-11-23 23:56:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:05,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807863952] [2024-11-23 23:56:05,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:05,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:05,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:05,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:05,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:56:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:06,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:56:06,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:06,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:06,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807863952] [2024-11-23 23:56:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807863952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:56:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823412445] [2024-11-23 23:56:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:06,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:56:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:06,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:56:06,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:06,215 INFO L87 Difference]: Start difference. First operand 213 states and 307 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:06,745 INFO L93 Difference]: Finished difference Result 464 states and 669 transitions. [2024-11-23 23:56:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:06,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2024-11-23 23:56:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:06,749 INFO L225 Difference]: With dead ends: 464 [2024-11-23 23:56:06,750 INFO L226 Difference]: Without dead ends: 254 [2024-11-23 23:56:06,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:06,752 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 63 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:06,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 613 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:56:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-23 23:56:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2024-11-23 23:56:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 167 states have (on average 1.3173652694610778) internal successors, (220), 168 states have internal predecessors, (220), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 302 transitions. [2024-11-23 23:56:06,777 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 302 transitions. Word has length 179 [2024-11-23 23:56:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:06,778 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 302 transitions. [2024-11-23 23:56:06,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 302 transitions. [2024-11-23 23:56:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:06,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:06,782 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:06,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:56:06,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:06,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:06,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2112799172, now seen corresponding path program 1 times [2024-11-23 23:56:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:06,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138018456] [2024-11-23 23:56:06,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:06,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:06,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:06,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:56:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:07,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:56:07,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:07,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:07,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:07,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138018456] [2024-11-23 23:56:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138018456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:07,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:56:07,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149680540] [2024-11-23 23:56:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:07,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:56:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:07,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:56:07,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:07,389 INFO L87 Difference]: Start difference. First operand 211 states and 302 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:08,348 INFO L93 Difference]: Finished difference Result 462 states and 662 transitions. [2024-11-23 23:56:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:08,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2024-11-23 23:56:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:08,352 INFO L225 Difference]: With dead ends: 462 [2024-11-23 23:56:08,352 INFO L226 Difference]: Without dead ends: 254 [2024-11-23 23:56:08,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:08,354 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 62 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:08,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 638 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:56:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-23 23:56:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 212. [2024-11-23 23:56:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 168 states have (on average 1.3154761904761905) internal successors, (221), 169 states have internal predecessors, (221), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 303 transitions. [2024-11-23 23:56:08,379 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 303 transitions. Word has length 179 [2024-11-23 23:56:08,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:08,380 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 303 transitions. [2024-11-23 23:56:08,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 303 transitions. [2024-11-23 23:56:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-23 23:56:08,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:08,383 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:08,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:08,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:08,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:08,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1091730818, now seen corresponding path program 1 times [2024-11-23 23:56:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481810648] [2024-11-23 23:56:08,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:08,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:08,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:08,588 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:08,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:56:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:08,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:56:08,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:08,989 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 12 treesize of output 8 [2024-11-23 23:56:09,068 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 17 treesize of output 13 [2024-11-23 23:56:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:56:09,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:09,493 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:09,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481810648] [2024-11-23 23:56:09,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481810648] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:09,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2024-11-23 23:56:09,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479796544] [2024-11-23 23:56:09,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:09,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:56:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:09,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:56:09,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:56:09,496 INFO L87 Difference]: Start difference. First operand 212 states and 303 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:09,918 INFO L93 Difference]: Finished difference Result 503 states and 719 transitions. [2024-11-23 23:56:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:56:09,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2024-11-23 23:56:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:09,922 INFO L225 Difference]: With dead ends: 503 [2024-11-23 23:56:09,922 INFO L226 Difference]: Without dead ends: 294 [2024-11-23 23:56:09,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:56:09,925 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 115 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:09,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1299 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:56:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-23 23:56:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 212. [2024-11-23 23:56:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 168 states have (on average 1.3154761904761905) internal successors, (221), 169 states have internal predecessors, (221), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 303 transitions. [2024-11-23 23:56:09,951 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 303 transitions. Word has length 179 [2024-11-23 23:56:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:09,952 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 303 transitions. [2024-11-23 23:56:09,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 303 transitions. [2024-11-23 23:56:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:56:09,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:09,955 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:09,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:56:10,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:10,156 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1535301185, now seen corresponding path program 1 times [2024-11-23 23:56:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059341734] [2024-11-23 23:56:10,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:10,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:10,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:56:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:10,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:56:10,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:10,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-23 23:56:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:10,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:10,645 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059341734] [2024-11-23 23:56:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059341734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:56:10,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:56:10,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971889612] [2024-11-23 23:56:10,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:10,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:56:10,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:10,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:56:10,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:56:10,647 INFO L87 Difference]: Start difference. First operand 212 states and 303 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:13,731 INFO L93 Difference]: Finished difference Result 421 states and 601 transitions. [2024-11-23 23:56:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:56:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:56:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:13,736 INFO L225 Difference]: With dead ends: 421 [2024-11-23 23:56:13,736 INFO L226 Difference]: Without dead ends: 212 [2024-11-23 23:56:13,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:56:13,738 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 65 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:13,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 630 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 23:56:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-23 23:56:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2024-11-23 23:56:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 167 states have internal predecessors, (217), 41 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-23 23:56:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 299 transitions. [2024-11-23 23:56:13,773 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 299 transitions. Word has length 180 [2024-11-23 23:56:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:13,775 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 299 transitions. [2024-11-23 23:56:13,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 299 transitions. [2024-11-23 23:56:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:56:13,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:13,779 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:13,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:56:13,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:13,980 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:13,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:13,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1213410666, now seen corresponding path program 1 times [2024-11-23 23:56:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:13,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286479247] [2024-11-23 23:56:13,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:13,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:13,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:13,983 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:13,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:56:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:14,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 23:56:14,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:16,939 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 12 treesize of output 8 [2024-11-23 23:56:18,410 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 39 treesize of output 30 [2024-11-23 23:56:19,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2024-11-23 23:56:27,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2024-11-23 23:56:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 193 proven. 559 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-23 23:56:28,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:31,047 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286479247] [2024-11-23 23:56:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286479247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2073969129] [2024-11-23 23:56:31,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:31,048 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:56:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:56:31,056 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:56:31,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-23 23:56:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:32,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:56:32,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:34,314 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 12 treesize of output 8 [2024-11-23 23:56:35,139 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 27 treesize of output 19 [2024-11-23 23:56:35,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-23 23:56:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:35,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2073969129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:35,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:35,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [28] total 34 [2024-11-23 23:56:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487379755] [2024-11-23 23:56:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:35,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:56:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:35,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:56:35,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1998, Unknown=0, NotChecked=0, Total=2450 [2024-11-23 23:56:35,325 INFO L87 Difference]: Start difference. First operand 210 states and 299 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:36,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:36,851 INFO L93 Difference]: Finished difference Result 687 states and 977 transitions. [2024-11-23 23:56:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:56:36,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:56:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:36,856 INFO L225 Difference]: With dead ends: 687 [2024-11-23 23:56:36,857 INFO L226 Difference]: Without dead ends: 480 [2024-11-23 23:56:36,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 23:56:36,859 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 552 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:36,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 917 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:56:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-23 23:56:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 312. [2024-11-23 23:56:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 255 states have internal predecessors, (335), 55 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-23 23:56:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 445 transitions. [2024-11-23 23:56:36,904 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 445 transitions. Word has length 180 [2024-11-23 23:56:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:36,905 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 445 transitions. [2024-11-23 23:56:36,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 445 transitions. [2024-11-23 23:56:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:56:36,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:36,909 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:36,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:56:37,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:37,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:56:37,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:37,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2060488276, now seen corresponding path program 1 times [2024-11-23 23:56:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136190818] [2024-11-23 23:56:37,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:37,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:56:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:37,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 23:56:37,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:37,664 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 9 [2024-11-23 23:56:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:56:37,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:38,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136190818] [2024-11-23 23:56:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136190818] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:38,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:38,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 12 [2024-11-23 23:56:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193929483] [2024-11-23 23:56:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:38,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:56:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:38,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:56:38,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:56:38,025 INFO L87 Difference]: Start difference. First operand 312 states and 445 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:56:38,487 INFO L93 Difference]: Finished difference Result 782 states and 1118 transitions. [2024-11-23 23:56:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:56:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:56:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:56:38,492 INFO L225 Difference]: With dead ends: 782 [2024-11-23 23:56:38,492 INFO L226 Difference]: Without dead ends: 473 [2024-11-23 23:56:38,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:56:38,494 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 178 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:56:38,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2231 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:56:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-23 23:56:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 331. [2024-11-23 23:56:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 267 states have (on average 1.307116104868914) internal successors, (349), 269 states have internal predecessors, (349), 59 states have call successors, (59), 4 states have call predecessors, (59), 4 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-23 23:56:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 467 transitions. [2024-11-23 23:56:38,548 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 467 transitions. Word has length 180 [2024-11-23 23:56:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:56:38,549 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 467 transitions. [2024-11-23 23:56:38,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:56:38,550 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 467 transitions. [2024-11-23 23:56:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:56:38,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:56:38,554 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:56:38,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:56:38,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:38,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:56:38,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:56:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -395762216, now seen corresponding path program 1 times [2024-11-23 23:56:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:56:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110656292] [2024-11-23 23:56:38,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:56:38,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:56:38,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:56:38,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:56:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:39,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 23:56:39,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:41,133 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 12 treesize of output 8 [2024-11-23 23:56:42,587 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 42 treesize of output 22 [2024-11-23 23:56:43,381 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 42 treesize of output 22 [2024-11-23 23:56:48,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2024-11-23 23:56:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 191 proven. 559 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-23 23:56:49,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:56:53,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:56:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110656292] [2024-11-23 23:56:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110656292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:56:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407088450] [2024-11-23 23:56:53,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:56:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:56:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:56:53,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:56:53,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-23 23:56:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:56:53,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 23:56:53,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:56:57,663 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 12 treesize of output 8 [2024-11-23 23:56:58,491 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 25 treesize of output 21 [2024-11-23 23:56:58,779 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 29 treesize of output 21 [2024-11-23 23:56:59,011 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 52 treesize of output 40 [2024-11-23 23:56:59,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 32 [2024-11-23 23:56:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-11-23 23:56:59,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:56:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1407088450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:56:59,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:56:59,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [26] total 35 [2024-11-23 23:56:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127411705] [2024-11-23 23:56:59,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:56:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:56:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:56:59,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:56:59,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=2139, Unknown=0, NotChecked=0, Total=2550 [2024-11-23 23:56:59,474 INFO L87 Difference]: Start difference. First operand 331 states and 467 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:57:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:02,069 INFO L93 Difference]: Finished difference Result 822 states and 1158 transitions. [2024-11-23 23:57:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:57:02,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 180 [2024-11-23 23:57:02,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:02,075 INFO L225 Difference]: With dead ends: 822 [2024-11-23 23:57:02,075 INFO L226 Difference]: Without dead ends: 494 [2024-11-23 23:57:02,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=435, Invalid=2535, Unknown=0, NotChecked=0, Total=2970 [2024-11-23 23:57:02,078 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 419 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:02,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1443 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:57:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-23 23:57:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 402. [2024-11-23 23:57:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 323 states have (on average 1.306501547987616) internal successors, (422), 326 states have internal predecessors, (422), 73 states have call successors, (73), 5 states have call predecessors, (73), 5 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-23 23:57:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 568 transitions. [2024-11-23 23:57:02,152 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 568 transitions. Word has length 180 [2024-11-23 23:57:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:02,152 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 568 transitions. [2024-11-23 23:57:02,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-23 23:57:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 568 transitions. [2024-11-23 23:57:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-23 23:57:02,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:02,156 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:02,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:57:02,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-23 23:57:02,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:57:02,557 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:02,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1416830570, now seen corresponding path program 1 times [2024-11-23 23:57:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:57:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153962495] [2024-11-23 23:57:02,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:02,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:02,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:02,562 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:02,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a747cc4a-2879-485f-8cd0-63951c819fb1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:57:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:02,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-23 23:57:02,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:04,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-23 23:57:06,388 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 42 treesize of output 22 [2024-11-23 23:57:07,099 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 39 treesize of output 30 [2024-11-23 23:57:13,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 51 [2024-11-23 23:57:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 193 proven. 559 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-23 23:57:14,214 INFO L312 TraceCheckSpWp]: Computing backward predicates...