./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/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 f2d013ffa4d7cd59307ce87b23dd696caa1ad1374742fbf879c50e37b4a890a2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:19:26,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:19:26,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:19:26,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:19:26,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:19:26,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:19:26,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:19:26,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:19:26,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:19:26,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:19:26,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:19:26,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:19:26,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:19:26,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:19:26,927 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:19:26,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:19:26,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:19:26,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:19:26,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:19:26,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:19:26,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:19:26,929 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:19:26,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:19:26,929 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:19:26,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:19:26,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:19:26,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:19:26,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:19:26,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:19:26,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:19:26,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:19:26,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:19:26,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:19:26,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:19:26,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:19:26,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:19:26,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:19:26,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:19:26,933 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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/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 -> f2d013ffa4d7cd59307ce87b23dd696caa1ad1374742fbf879c50e37b4a890a2 [2024-11-23 23:19:27,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:19:27,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:19:27,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:19:27,319 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:19:27,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:19:27,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.i [2024-11-23 23:19:30,730 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/data/7119eabad/e0398e4c14014e52a68a9700421f5341/FLAGe08262b5d [2024-11-23 23:19:31,116 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:19:31,120 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.i [2024-11-23 23:19:31,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/data/7119eabad/e0398e4c14014e52a68a9700421f5341/FLAGe08262b5d [2024-11-23 23:19:31,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/data/7119eabad/e0398e4c14014e52a68a9700421f5341 [2024-11-23 23:19:31,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:19:31,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:19:31,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:19:31,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:19:31,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:19:31,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b72439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31, skipping insertion in model container [2024-11-23 23:19:31,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:19:31,427 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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.i[917,930] [2024-11-23 23:19:31,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:19:31,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:19:31,556 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_c0dec896-cec1-4310-8e8d-9f06951c4c7b/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-89.i[917,930] [2024-11-23 23:19:31,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:19:31,625 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:19:31,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31 WrapperNode [2024-11-23 23:19:31,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:19:31,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:19:31,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:19:31,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:19:31,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,726 INFO L138 Inliner]: procedures = 26, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2024-11-23 23:19:31,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:19:31,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:19:31,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:19:31,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:19:31,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,784 INFO L175 MemorySlicer]: Split 107 memory accesses to 6 slices as follows [2, 44, 29, 5, 13, 14]. 41 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 5, 3, 1, 1, 2]. The 15 writes are split as follows [0, 8, 3, 1, 1, 2]. [2024-11-23 23:19:31,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:19:31,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:19:31,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:19:31,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:19:31,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (1/1) ... [2024-11-23 23:19:31,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:19:31,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:19:31,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:19:31,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:19:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:19:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:19:31,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:19:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:19:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:19:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:19:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:19:31,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:19:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:19:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:19:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:19:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:19:32,103 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:19:32,105 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:19:32,933 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-11-23 23:19:32,934 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:19:32,954 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:19:32,956 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:19:32,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:19:32 BoogieIcfgContainer [2024-11-23 23:19:32,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:19:33,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:19:33,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:19:33,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:19:33,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:19:31" (1/3) ... [2024-11-23 23:19:33,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589a14c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:19:33, skipping insertion in model container [2024-11-23 23:19:33,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:19:31" (2/3) ... [2024-11-23 23:19:33,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589a14c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:19:33, skipping insertion in model container [2024-11-23 23:19:33,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:19:32" (3/3) ... [2024-11-23 23:19:33,025 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-89.i [2024-11-23 23:19:33,042 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:19:33,045 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-89.i that has 2 procedures, 102 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:19:33,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:19:33,150 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;@3b012eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:19:33,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:19:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 86 states have (on average 1.441860465116279) internal successors, (124), 87 states have internal predecessors, (124), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:33,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:33,173 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:33,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:33,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash 80080085, now seen corresponding path program 1 times [2024-11-23 23:19:33,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:33,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559239878] [2024-11-23 23:19:33,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-23 23:19:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559239878] [2024-11-23 23:19:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559239878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:19:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319647732] [2024-11-23 23:19:33,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:19:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:19:33,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:19:33,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:19:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:34,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:19:34,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:19:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-23 23:19:34,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:19:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319647732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:19:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:19:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624495887] [2024-11-23 23:19:34,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:34,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:19:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:34,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:19:34,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:19:34,176 INFO L87 Difference]: Start difference. First operand has 102 states, 86 states have (on average 1.441860465116279) internal successors, (124), 87 states have internal predecessors, (124), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:34,222 INFO L93 Difference]: Finished difference Result 197 states and 307 transitions. [2024-11-23 23:19:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:19:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-23 23:19:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:34,237 INFO L225 Difference]: With dead ends: 197 [2024-11-23 23:19:34,238 INFO L226 Difference]: Without dead ends: 98 [2024-11-23 23:19:34,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 23:19:34,250 INFO L435 NwaCegarLoop]: 141 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, 141 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 23:19:34,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:19:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-23 23:19:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-23 23:19:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.3855421686746987) internal successors, (115), 83 states have internal predecessors, (115), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2024-11-23 23:19:34,349 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 109 [2024-11-23 23:19:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:34,349 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2024-11-23 23:19:34,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2024-11-23 23:19:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:34,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:34,359 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:34,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:19:34,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:19:34,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:34,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 231956475, now seen corresponding path program 1 times [2024-11-23 23:19:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591339354] [2024-11-23 23:19:34,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591339354] [2024-11-23 23:19:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591339354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:19:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461082984] [2024-11-23 23:19:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:35,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:19:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:35,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:19:35,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:19:35,114 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:35,185 INFO L93 Difference]: Finished difference Result 196 states and 283 transitions. [2024-11-23 23:19:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:19:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:35,190 INFO L225 Difference]: With dead ends: 196 [2024-11-23 23:19:35,192 INFO L226 Difference]: Without dead ends: 101 [2024-11-23 23:19:35,193 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 23:19:35,194 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 403 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 23:19:35,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 403 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:19:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-23 23:19:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-11-23 23:19:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.3764705882352941) internal successors, (117), 85 states have internal predecessors, (117), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 143 transitions. [2024-11-23 23:19:35,222 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 143 transitions. Word has length 109 [2024-11-23 23:19:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:35,228 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 143 transitions. [2024-11-23 23:19:35,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:35,229 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 143 transitions. [2024-11-23 23:19:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:35,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:35,235 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:35,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:19:35,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:35,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash 912014845, now seen corresponding path program 1 times [2024-11-23 23:19:35,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:35,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605908387] [2024-11-23 23:19:35,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:35,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605908387] [2024-11-23 23:19:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605908387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:19:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280386812] [2024-11-23 23:19:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:35,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:19:35,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:35,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:19:35,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:19:35,637 INFO L87 Difference]: Start difference. First operand 100 states and 143 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:35,687 INFO L93 Difference]: Finished difference Result 200 states and 287 transitions. [2024-11-23 23:19:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:19:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:35,689 INFO L225 Difference]: With dead ends: 200 [2024-11-23 23:19:35,689 INFO L226 Difference]: Without dead ends: 103 [2024-11-23 23:19:35,690 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 23:19:35,694 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 404 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 23:19:35,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 404 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:19:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-23 23:19:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-23 23:19:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.367816091954023) internal successors, (119), 87 states have internal predecessors, (119), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2024-11-23 23:19:35,721 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 109 [2024-11-23 23:19:35,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:35,722 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2024-11-23 23:19:35,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:35,722 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2024-11-23 23:19:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:35,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:35,728 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:35,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:19:35,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:35,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1607945089, now seen corresponding path program 1 times [2024-11-23 23:19:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231959135] [2024-11-23 23:19:35,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:36,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:36,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231959135] [2024-11-23 23:19:36,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231959135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:36,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:36,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:19:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643532969] [2024-11-23 23:19:36,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:36,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:19:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:36,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:19:36,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:19:36,070 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:36,131 INFO L93 Difference]: Finished difference Result 204 states and 291 transitions. [2024-11-23 23:19:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:19:36,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:36,134 INFO L225 Difference]: With dead ends: 204 [2024-11-23 23:19:36,136 INFO L226 Difference]: Without dead ends: 105 [2024-11-23 23:19:36,137 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 23:19:36,139 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:36,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 406 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:19:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-23 23:19:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-23 23:19:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2024-11-23 23:19:36,166 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 109 [2024-11-23 23:19:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:36,167 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2024-11-23 23:19:36,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2024-11-23 23:19:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:36,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:36,172 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:36,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:19:36,173 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:36,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1606098047, now seen corresponding path program 1 times [2024-11-23 23:19:36,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:36,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922548546] [2024-11-23 23:19:36,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922548546] [2024-11-23 23:19:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922548546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:19:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899161051] [2024-11-23 23:19:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:40,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:19:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:40,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:19:40,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:19:40,067 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:41,328 INFO L93 Difference]: Finished difference Result 270 states and 383 transitions. [2024-11-23 23:19:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:19:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2024-11-23 23:19:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:41,331 INFO L225 Difference]: With dead ends: 270 [2024-11-23 23:19:41,331 INFO L226 Difference]: Without dead ends: 169 [2024-11-23 23:19:41,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:19:41,333 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 465 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:41,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 761 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:19:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-23 23:19:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 115. [2024-11-23 23:19:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 100 states have (on average 1.37) internal successors, (137), 100 states have internal predecessors, (137), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 163 transitions. [2024-11-23 23:19:41,366 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 163 transitions. Word has length 109 [2024-11-23 23:19:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:41,367 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 163 transitions. [2024-11-23 23:19:41,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 163 transitions. [2024-11-23 23:19:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:41,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:41,369 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:41,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:19:41,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:41,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1667800895, now seen corresponding path program 1 times [2024-11-23 23:19:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626474620] [2024-11-23 23:19:41,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:41,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626474620] [2024-11-23 23:19:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626474620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:19:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11681140] [2024-11-23 23:19:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:42,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:19:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:42,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:19:42,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:19:42,261 INFO L87 Difference]: Start difference. First operand 115 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:42,671 INFO L93 Difference]: Finished difference Result 284 states and 403 transitions. [2024-11-23 23:19:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:19:42,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:42,673 INFO L225 Difference]: With dead ends: 284 [2024-11-23 23:19:42,673 INFO L226 Difference]: Without dead ends: 172 [2024-11-23 23:19:42,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:19:42,675 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 258 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:42,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 399 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:19:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-23 23:19:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 124. [2024-11-23 23:19:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 109 states have (on average 1.3761467889908257) internal successors, (150), 109 states have internal predecessors, (150), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-23 23:19:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-11-23 23:19:42,692 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 109 [2024-11-23 23:19:42,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:42,693 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-11-23 23:19:42,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-11-23 23:19:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:42,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:42,695 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:42,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:19:42,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:42,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1927988566, now seen corresponding path program 1 times [2024-11-23 23:19:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:42,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701305244] [2024-11-23 23:19:42,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:42,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:45,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701305244] [2024-11-23 23:19:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701305244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:45,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:19:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834178769] [2024-11-23 23:19:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:45,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:19:45,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:45,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:19:45,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:19:45,315 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:46,510 INFO L93 Difference]: Finished difference Result 449 states and 639 transitions. [2024-11-23 23:19:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:19:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2024-11-23 23:19:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:46,513 INFO L225 Difference]: With dead ends: 449 [2024-11-23 23:19:46,514 INFO L226 Difference]: Without dead ends: 328 [2024-11-23 23:19:46,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:19:46,515 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 556 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:46,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 539 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:19:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-23 23:19:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 321. [2024-11-23 23:19:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 281 states have (on average 1.3701067615658362) internal successors, (385), 282 states have internal predecessors, (385), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 457 transitions. [2024-11-23 23:19:46,575 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 457 transitions. Word has length 109 [2024-11-23 23:19:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:46,576 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 457 transitions. [2024-11-23 23:19:46,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 457 transitions. [2024-11-23 23:19:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:46,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:46,578 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:46,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:19:46,579 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1387243329, now seen corresponding path program 1 times [2024-11-23 23:19:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512973044] [2024-11-23 23:19:46,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:47,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512973044] [2024-11-23 23:19:47,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512973044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:47,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:47,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:19:47,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267439659] [2024-11-23 23:19:47,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:47,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:19:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:47,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:19:47,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:19:47,234 INFO L87 Difference]: Start difference. First operand 321 states and 457 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:47,865 INFO L93 Difference]: Finished difference Result 752 states and 1068 transitions. [2024-11-23 23:19:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:19:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-23 23:19:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:47,871 INFO L225 Difference]: With dead ends: 752 [2024-11-23 23:19:47,872 INFO L226 Difference]: Without dead ends: 434 [2024-11-23 23:19:47,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:19:47,877 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 249 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:47,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 520 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:19:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-23 23:19:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 337. [2024-11-23 23:19:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 297 states have (on average 1.3771043771043772) internal successors, (409), 298 states have internal predecessors, (409), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 481 transitions. [2024-11-23 23:19:47,950 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 481 transitions. Word has length 109 [2024-11-23 23:19:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:47,953 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 481 transitions. [2024-11-23 23:19:47,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 481 transitions. [2024-11-23 23:19:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:47,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:47,958 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:47,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:19:47,959 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:47,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1886655613, now seen corresponding path program 1 times [2024-11-23 23:19:47,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:47,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404061285] [2024-11-23 23:19:47,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:47,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:48,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404061285] [2024-11-23 23:19:48,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404061285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:48,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:19:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396897246] [2024-11-23 23:19:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:48,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:19:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:48,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:19:48,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:19:48,711 INFO L87 Difference]: Start difference. First operand 337 states and 481 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:49,154 INFO L93 Difference]: Finished difference Result 773 states and 1097 transitions. [2024-11-23 23:19:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:19:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:49,161 INFO L225 Difference]: With dead ends: 773 [2024-11-23 23:19:49,161 INFO L226 Difference]: Without dead ends: 439 [2024-11-23 23:19:49,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:19:49,164 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 77 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:49,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1054 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:19:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-23 23:19:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343. [2024-11-23 23:19:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 303 states have (on average 1.372937293729373) internal successors, (416), 304 states have internal predecessors, (416), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 488 transitions. [2024-11-23 23:19:49,232 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 488 transitions. Word has length 109 [2024-11-23 23:19:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:49,233 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 488 transitions. [2024-11-23 23:19:49,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 488 transitions. [2024-11-23 23:19:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:49,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:49,235 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:49,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:19:49,236 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:49,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1746368490, now seen corresponding path program 1 times [2024-11-23 23:19:49,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:49,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240255238] [2024-11-23 23:19:49,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:49,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:51,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:51,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240255238] [2024-11-23 23:19:51,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240255238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:51,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:51,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:19:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406047452] [2024-11-23 23:19:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:51,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:19:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:51,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:19:51,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:19:51,601 INFO L87 Difference]: Start difference. First operand 343 states and 488 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:53,584 INFO L93 Difference]: Finished difference Result 713 states and 1010 transitions. [2024-11-23 23:19:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:19:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-23 23:19:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:53,588 INFO L225 Difference]: With dead ends: 713 [2024-11-23 23:19:53,588 INFO L226 Difference]: Without dead ends: 373 [2024-11-23 23:19:53,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:19:53,590 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 338 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:53,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 867 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 23:19:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-23 23:19:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 302. [2024-11-23 23:19:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 262 states have (on average 1.3625954198473282) internal successors, (357), 263 states have internal predecessors, (357), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 429 transitions. [2024-11-23 23:19:53,654 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 429 transitions. Word has length 109 [2024-11-23 23:19:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:53,655 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 429 transitions. [2024-11-23 23:19:53,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 429 transitions. [2024-11-23 23:19:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:53,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:53,657 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:53,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:19:53,661 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:53,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1424477971, now seen corresponding path program 1 times [2024-11-23 23:19:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321475394] [2024-11-23 23:19:53,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:55,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321475394] [2024-11-23 23:19:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321475394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:19:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121317297] [2024-11-23 23:19:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:55,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:19:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:55,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:19:55,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:19:55,490 INFO L87 Difference]: Start difference. First operand 302 states and 429 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:56,572 INFO L93 Difference]: Finished difference Result 706 states and 1003 transitions. [2024-11-23 23:19:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:19:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2024-11-23 23:19:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:56,582 INFO L225 Difference]: With dead ends: 706 [2024-11-23 23:19:56,582 INFO L226 Difference]: Without dead ends: 428 [2024-11-23 23:19:56,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:19:56,585 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 257 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:56,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 926 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:19:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-23 23:19:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 320. [2024-11-23 23:19:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 280 states have (on average 1.3714285714285714) internal successors, (384), 281 states have internal predecessors, (384), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 456 transitions. [2024-11-23 23:19:56,657 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 456 transitions. Word has length 109 [2024-11-23 23:19:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:56,657 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 456 transitions. [2024-11-23 23:19:56,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:19:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 456 transitions. [2024-11-23 23:19:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:56,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:56,660 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:56,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:19:56,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:56,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash 403409617, now seen corresponding path program 1 times [2024-11-23 23:19:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:56,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042522045] [2024-11-23 23:19:56,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042522045] [2024-11-23 23:19:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042522045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:57,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:19:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219209228] [2024-11-23 23:19:57,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:57,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:19:57,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:57,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:19:57,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:19:57,214 INFO L87 Difference]: Start difference. First operand 320 states and 456 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:57,705 INFO L93 Difference]: Finished difference Result 730 states and 1037 transitions. [2024-11-23 23:19:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:19:57,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:57,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:57,709 INFO L225 Difference]: With dead ends: 730 [2024-11-23 23:19:57,709 INFO L226 Difference]: Without dead ends: 434 [2024-11-23 23:19:57,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:19:57,711 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 186 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:57,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 616 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:19:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-23 23:19:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 338. [2024-11-23 23:19:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 298 states have (on average 1.3724832214765101) internal successors, (409), 299 states have internal predecessors, (409), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 481 transitions. [2024-11-23 23:19:57,767 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 481 transitions. Word has length 109 [2024-11-23 23:19:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:57,768 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 481 transitions. [2024-11-23 23:19:57,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 481 transitions. [2024-11-23 23:19:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:57,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:57,770 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:57,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:19:57,771 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:57,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1643332689, now seen corresponding path program 1 times [2024-11-23 23:19:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146785118] [2024-11-23 23:19:57,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146785118] [2024-11-23 23:19:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146785118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:58,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:19:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766702455] [2024-11-23 23:19:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:58,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:19:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:58,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:19:58,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:19:58,326 INFO L87 Difference]: Start difference. First operand 338 states and 481 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:58,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:58,812 INFO L93 Difference]: Finished difference Result 752 states and 1065 transitions. [2024-11-23 23:19:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:19:58,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-23 23:19:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:58,818 INFO L225 Difference]: With dead ends: 752 [2024-11-23 23:19:58,818 INFO L226 Difference]: Without dead ends: 438 [2024-11-23 23:19:58,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:19:58,820 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 494 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:58,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 438 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:19:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-23 23:19:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 344. [2024-11-23 23:19:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 304 states have (on average 1.368421052631579) internal successors, (416), 305 states have internal predecessors, (416), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 488 transitions. [2024-11-23 23:19:58,883 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 488 transitions. Word has length 109 [2024-11-23 23:19:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:58,884 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 488 transitions. [2024-11-23 23:19:58,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:19:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 488 transitions. [2024-11-23 23:19:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-23 23:19:58,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:58,887 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:58,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:19:58,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:58,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash 622264335, now seen corresponding path program 1 times [2024-11-23 23:19:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:58,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400015202] [2024-11-23 23:19:58,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:58,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:19:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:19:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:19:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:19:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400015202] [2024-11-23 23:19:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400015202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:19:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:19:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:19:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740704939] [2024-11-23 23:19:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:19:59,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:19:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:19:59,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:19:59,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:19:59,463 INFO L87 Difference]: Start difference. First operand 344 states and 488 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:19:59,869 INFO L93 Difference]: Finished difference Result 764 states and 1078 transitions. [2024-11-23 23:19:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:19:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 109 [2024-11-23 23:19:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:19:59,873 INFO L225 Difference]: With dead ends: 764 [2024-11-23 23:19:59,873 INFO L226 Difference]: Without dead ends: 444 [2024-11-23 23:19:59,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:19:59,875 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 77 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:19:59,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1242 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:19:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-23 23:19:59,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 350. [2024-11-23 23:19:59,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 310 states have (on average 1.364516129032258) internal successors, (423), 311 states have internal predecessors, (423), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 23:19:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 495 transitions. [2024-11-23 23:19:59,959 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 495 transitions. Word has length 109 [2024-11-23 23:19:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:19:59,959 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 495 transitions. [2024-11-23 23:19:59,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:19:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 495 transitions. [2024-11-23 23:19:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:19:59,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:19:59,962 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:59,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:19:59,963 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:19:59,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:19:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1648157893, now seen corresponding path program 1 times [2024-11-23 23:19:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:19:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481299890] [2024-11-23 23:19:59,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:19:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481299890] [2024-11-23 23:20:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481299890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894227441] [2024-11-23 23:20:00,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:00,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:00,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:00,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:00,362 INFO L87 Difference]: Start difference. First operand 350 states and 495 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:00,635 INFO L93 Difference]: Finished difference Result 817 states and 1149 transitions. [2024-11-23 23:20:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:00,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2024-11-23 23:20:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:00,639 INFO L225 Difference]: With dead ends: 817 [2024-11-23 23:20:00,639 INFO L226 Difference]: Without dead ends: 491 [2024-11-23 23:20:00,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:00,641 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 111 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:00,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 503 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-23 23:20:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 454. [2024-11-23 23:20:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 410 states have (on average 1.3634146341463416) internal successors, (559), 410 states have internal predecessors, (559), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 637 transitions. [2024-11-23 23:20:00,697 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 637 transitions. Word has length 111 [2024-11-23 23:20:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:00,698 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 637 transitions. [2024-11-23 23:20:00,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 637 transitions. [2024-11-23 23:20:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:20:00,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:00,700 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:00,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:20:00,700 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:00,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 898144979, now seen corresponding path program 1 times [2024-11-23 23:20:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587629817] [2024-11-23 23:20:00,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-23 23:20:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587629817] [2024-11-23 23:20:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587629817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113132966] [2024-11-23 23:20:00,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:00,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:00,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:20:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:01,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:20:01,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:01,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:20:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113132966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:01,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:20:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-23 23:20:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807860391] [2024-11-23 23:20:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:01,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:01,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:01,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:01,190 INFO L87 Difference]: Start difference. First operand 454 states and 637 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:01,276 INFO L93 Difference]: Finished difference Result 786 states and 1106 transitions. [2024-11-23 23:20:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2024-11-23 23:20:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:01,280 INFO L225 Difference]: With dead ends: 786 [2024-11-23 23:20:01,280 INFO L226 Difference]: Without dead ends: 460 [2024-11-23 23:20:01,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:01,282 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:01,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 535 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-23 23:20:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2024-11-23 23:20:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 416 states have (on average 1.3581730769230769) internal successors, (565), 416 states have internal predecessors, (565), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 643 transitions. [2024-11-23 23:20:01,345 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 643 transitions. Word has length 111 [2024-11-23 23:20:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:01,346 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 643 transitions. [2024-11-23 23:20:01,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 643 transitions. [2024-11-23 23:20:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:01,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:01,348 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:01,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:01,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:20:01,553 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:01,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1149193064, now seen corresponding path program 1 times [2024-11-23 23:20:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:01,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520963726] [2024-11-23 23:20:01,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520963726] [2024-11-23 23:20:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520963726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:20:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582407716] [2024-11-23 23:20:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:20:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:03,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:20:03,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:20:03,617 INFO L87 Difference]: Start difference. First operand 460 states and 643 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:20:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:05,201 INFO L93 Difference]: Finished difference Result 1079 states and 1507 transitions. [2024-11-23 23:20:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:20:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-11-23 23:20:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:05,206 INFO L225 Difference]: With dead ends: 1079 [2024-11-23 23:20:05,206 INFO L226 Difference]: Without dead ends: 747 [2024-11-23 23:20:05,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:20:05,209 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 421 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:05,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1154 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:20:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-23 23:20:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 474. [2024-11-23 23:20:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 430 states have (on average 1.3790697674418604) internal successors, (593), 430 states have internal predecessors, (593), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 671 transitions. [2024-11-23 23:20:05,279 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 671 transitions. Word has length 112 [2024-11-23 23:20:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:05,279 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 671 transitions. [2024-11-23 23:20:05,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 23:20:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 671 transitions. [2024-11-23 23:20:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:05,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:05,283 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:05,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:20:05,284 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:05,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 128124710, now seen corresponding path program 1 times [2024-11-23 23:20:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90259857] [2024-11-23 23:20:05,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:06,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:06,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90259857] [2024-11-23 23:20:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90259857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:06,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:20:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783406387] [2024-11-23 23:20:06,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:06,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:20:06,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:06,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:20:06,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:06,014 INFO L87 Difference]: Start difference. First operand 474 states and 671 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:06,520 INFO L93 Difference]: Finished difference Result 942 states and 1327 transitions. [2024-11-23 23:20:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:06,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2024-11-23 23:20:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:06,525 INFO L225 Difference]: With dead ends: 942 [2024-11-23 23:20:06,525 INFO L226 Difference]: Without dead ends: 589 [2024-11-23 23:20:06,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:20:06,527 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 179 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:06,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 515 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-23 23:20:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 480. [2024-11-23 23:20:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 436 states have (on average 1.3807339449541285) internal successors, (602), 436 states have internal predecessors, (602), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 680 transitions. [2024-11-23 23:20:06,600 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 680 transitions. Word has length 112 [2024-11-23 23:20:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:06,601 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 680 transitions. [2024-11-23 23:20:06,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 680 transitions. [2024-11-23 23:20:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:06,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:06,603 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:06,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:20:06,604 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:06,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash 268673320, now seen corresponding path program 1 times [2024-11-23 23:20:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11771620] [2024-11-23 23:20:06,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:06,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:06,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11771620] [2024-11-23 23:20:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11771620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921110072] [2024-11-23 23:20:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:06,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:06,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:06,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:06,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:06,900 INFO L87 Difference]: Start difference. First operand 480 states and 680 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:07,101 INFO L93 Difference]: Finished difference Result 936 states and 1317 transitions. [2024-11-23 23:20:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2024-11-23 23:20:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:07,106 INFO L225 Difference]: With dead ends: 936 [2024-11-23 23:20:07,106 INFO L226 Difference]: Without dead ends: 527 [2024-11-23 23:20:07,107 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 23:20:07,108 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 65 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:07,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 666 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:20:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-23 23:20:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 427. [2024-11-23 23:20:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.3420365535248042) internal successors, (514), 383 states have internal predecessors, (514), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 592 transitions. [2024-11-23 23:20:07,200 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 592 transitions. Word has length 112 [2024-11-23 23:20:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:07,200 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 592 transitions. [2024-11-23 23:20:07,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 592 transitions. [2024-11-23 23:20:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:07,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:07,203 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:07,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:20:07,203 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:07,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1011594872, now seen corresponding path program 1 times [2024-11-23 23:20:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977839221] [2024-11-23 23:20:07,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977839221] [2024-11-23 23:20:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977839221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:20:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578375876] [2024-11-23 23:20:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:08,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:20:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:08,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:20:08,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:20:08,617 INFO L87 Difference]: Start difference. First operand 427 states and 592 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:09,692 INFO L93 Difference]: Finished difference Result 874 states and 1198 transitions. [2024-11-23 23:20:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:20:09,693 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-23 23:20:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:09,696 INFO L225 Difference]: With dead ends: 874 [2024-11-23 23:20:09,696 INFO L226 Difference]: Without dead ends: 562 [2024-11-23 23:20:09,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:20:09,698 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 461 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:09,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 910 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:20:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-23 23:20:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 421. [2024-11-23 23:20:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 377 states have (on average 1.3501326259946949) internal successors, (509), 377 states have internal predecessors, (509), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 587 transitions. [2024-11-23 23:20:09,763 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 587 transitions. Word has length 112 [2024-11-23 23:20:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:09,764 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 587 transitions. [2024-11-23 23:20:09,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 587 transitions. [2024-11-23 23:20:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:09,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:09,766 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:09,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:20:09,766 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:09,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2032663226, now seen corresponding path program 1 times [2024-11-23 23:20:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042114403] [2024-11-23 23:20:09,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:10,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042114403] [2024-11-23 23:20:10,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042114403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:10,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:10,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:20:10,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769243358] [2024-11-23 23:20:10,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:10,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:20:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:10,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:20:10,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:10,562 INFO L87 Difference]: Start difference. First operand 421 states and 587 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:11,141 INFO L93 Difference]: Finished difference Result 849 states and 1178 transitions. [2024-11-23 23:20:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:11,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-23 23:20:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:11,146 INFO L225 Difference]: With dead ends: 849 [2024-11-23 23:20:11,146 INFO L226 Difference]: Without dead ends: 536 [2024-11-23 23:20:11,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:20:11,149 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 347 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:11,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 514 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-23 23:20:11,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 427. [2024-11-23 23:20:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.3524804177545693) internal successors, (518), 383 states have internal predecessors, (518), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 596 transitions. [2024-11-23 23:20:11,251 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 596 transitions. Word has length 112 [2024-11-23 23:20:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:11,252 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 596 transitions. [2024-11-23 23:20:11,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 596 transitions. [2024-11-23 23:20:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:20:11,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:11,254 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:11,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 23:20:11,254 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:11,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1892114616, now seen corresponding path program 1 times [2024-11-23 23:20:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:11,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827224522] [2024-11-23 23:20:11,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:11,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827224522] [2024-11-23 23:20:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827224522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922359351] [2024-11-23 23:20:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:11,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:11,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:11,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:11,497 INFO L87 Difference]: Start difference. First operand 427 states and 596 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:11,679 INFO L93 Difference]: Finished difference Result 817 states and 1129 transitions. [2024-11-23 23:20:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 112 [2024-11-23 23:20:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:11,683 INFO L225 Difference]: With dead ends: 817 [2024-11-23 23:20:11,683 INFO L226 Difference]: Without dead ends: 483 [2024-11-23 23:20:11,684 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 23:20:11,687 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 65 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:11,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 666 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:20:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-23 23:20:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 377. [2024-11-23 23:20:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.3333333333333333) internal successors, (444), 333 states have internal predecessors, (444), 39 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 522 transitions. [2024-11-23 23:20:11,751 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 522 transitions. Word has length 112 [2024-11-23 23:20:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:11,752 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 522 transitions. [2024-11-23 23:20:11,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 522 transitions. [2024-11-23 23:20:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:20:11,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:11,754 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:11,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 23:20:11,755 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:11,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 15762643, now seen corresponding path program 1 times [2024-11-23 23:20:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072849420] [2024-11-23 23:20:11,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072849420] [2024-11-23 23:20:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072849420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:20:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109672974] [2024-11-23 23:20:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:12,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:20:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:12,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:20:12,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:12,377 INFO L87 Difference]: Start difference. First operand 377 states and 522 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:12,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:12,645 INFO L93 Difference]: Finished difference Result 389 states and 534 transitions. [2024-11-23 23:20:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:20:12,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2024-11-23 23:20:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:12,648 INFO L225 Difference]: With dead ends: 389 [2024-11-23 23:20:12,648 INFO L226 Difference]: Without dead ends: 387 [2024-11-23 23:20:12,649 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 23:20:12,650 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 97 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:12,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 828 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-23 23:20:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-23 23:20:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 342 states have (on average 1.3245614035087718) internal successors, (453), 342 states have internal predecessors, (453), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 531 transitions. [2024-11-23 23:20:12,715 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 531 transitions. Word has length 113 [2024-11-23 23:20:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:12,716 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 531 transitions. [2024-11-23 23:20:12,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 531 transitions. [2024-11-23 23:20:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:20:12,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:12,718 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:12,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:20:12,718 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:12,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 17609685, now seen corresponding path program 1 times [2024-11-23 23:20:12,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291770655] [2024-11-23 23:20:12,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291770655] [2024-11-23 23:20:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291770655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:20:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101814594] [2024-11-23 23:20:13,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:20:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:13,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:20:13,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:20:13,429 INFO L87 Difference]: Start difference. First operand 387 states and 531 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:13,977 INFO L93 Difference]: Finished difference Result 686 states and 937 transitions. [2024-11-23 23:20:13,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:20:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2024-11-23 23:20:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:13,981 INFO L225 Difference]: With dead ends: 686 [2024-11-23 23:20:13,981 INFO L226 Difference]: Without dead ends: 395 [2024-11-23 23:20:13,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:20:13,983 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 233 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:13,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 624 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-23 23:20:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-23 23:20:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 348 states have (on average 1.3132183908045978) internal successors, (457), 348 states have internal predecessors, (457), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 535 transitions. [2024-11-23 23:20:14,064 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 535 transitions. Word has length 113 [2024-11-23 23:20:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:14,064 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 535 transitions. [2024-11-23 23:20:14,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 535 transitions. [2024-11-23 23:20:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:20:14,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:14,066 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:14,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:20:14,066 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1792617047, now seen corresponding path program 1 times [2024-11-23 23:20:14,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:14,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123068600] [2024-11-23 23:20:14,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:14,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123068600] [2024-11-23 23:20:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123068600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:14,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:14,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615710432] [2024-11-23 23:20:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:14,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:14,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:14,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:14,305 INFO L87 Difference]: Start difference. First operand 395 states and 535 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:14,459 INFO L93 Difference]: Finished difference Result 694 states and 939 transitions. [2024-11-23 23:20:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:14,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2024-11-23 23:20:14,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:14,463 INFO L225 Difference]: With dead ends: 694 [2024-11-23 23:20:14,463 INFO L226 Difference]: Without dead ends: 395 [2024-11-23 23:20:14,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:14,465 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 87 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:14,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 498 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:20:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-23 23:20:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-23 23:20:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 348 states have (on average 1.3074712643678161) internal successors, (455), 348 states have internal predecessors, (455), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 533 transitions. [2024-11-23 23:20:14,546 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 533 transitions. Word has length 113 [2024-11-23 23:20:14,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:14,547 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 533 transitions. [2024-11-23 23:20:14,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 533 transitions. [2024-11-23 23:20:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:20:14,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:14,551 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:14,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:20:14,551 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:14,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1822291879, now seen corresponding path program 1 times [2024-11-23 23:20:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:14,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761577954] [2024-11-23 23:20:14,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:14,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-23 23:20:14,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761577954] [2024-11-23 23:20:14,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761577954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:14,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732409794] [2024-11-23 23:20:14,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:14,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:14,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:14,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:14,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:20:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:14,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:20:14,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:15,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:20:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732409794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:20:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-23 23:20:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992062350] [2024-11-23 23:20:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:15,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:15,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:15,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:15,017 INFO L87 Difference]: Start difference. First operand 395 states and 533 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:15,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:15,112 INFO L93 Difference]: Finished difference Result 700 states and 943 transitions. [2024-11-23 23:20:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:15,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2024-11-23 23:20:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:15,115 INFO L225 Difference]: With dead ends: 700 [2024-11-23 23:20:15,115 INFO L226 Difference]: Without dead ends: 401 [2024-11-23 23:20:15,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:15,116 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:15,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 536 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-23 23:20:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-23 23:20:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 354 states have (on average 1.3022598870056497) internal successors, (461), 354 states have internal predecessors, (461), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 539 transitions. [2024-11-23 23:20:15,187 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 539 transitions. Word has length 113 [2024-11-23 23:20:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:15,187 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 539 transitions. [2024-11-23 23:20:15,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 539 transitions. [2024-11-23 23:20:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:20:15,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:15,189 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:15,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:20:15,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-23 23:20:15,390 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:15,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash 310078142, now seen corresponding path program 1 times [2024-11-23 23:20:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:15,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759898875] [2024-11-23 23:20:15,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:15,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-23 23:20:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759898875] [2024-11-23 23:20:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759898875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198818986] [2024-11-23 23:20:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:15,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:15,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:20:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:15,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:20:15,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:15,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:20:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198818986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:20:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-23 23:20:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302220533] [2024-11-23 23:20:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:15,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:15,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:15,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:20:15,954 INFO L87 Difference]: Start difference. First operand 401 states and 539 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:16,074 INFO L93 Difference]: Finished difference Result 714 states and 957 transitions. [2024-11-23 23:20:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 116 [2024-11-23 23:20:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:16,077 INFO L225 Difference]: With dead ends: 714 [2024-11-23 23:20:16,077 INFO L226 Difference]: Without dead ends: 409 [2024-11-23 23:20:16,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:20:16,078 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:16,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 665 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:20:16,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-23 23:20:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 403. [2024-11-23 23:20:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 356 states have (on average 1.300561797752809) internal successors, (463), 356 states have internal predecessors, (463), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 541 transitions. [2024-11-23 23:20:16,152 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 541 transitions. Word has length 116 [2024-11-23 23:20:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:16,152 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 541 transitions. [2024-11-23 23:20:16,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 541 transitions. [2024-11-23 23:20:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 23:20:16,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:16,154 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:16,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:20:16,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 23:20:16,355 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:16,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash 211762456, now seen corresponding path program 1 times [2024-11-23 23:20:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226784304] [2024-11-23 23:20:16,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:16,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:16,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226784304] [2024-11-23 23:20:16,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226784304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:16,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:16,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:20:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479878183] [2024-11-23 23:20:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:16,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:16,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:16,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:16,985 INFO L87 Difference]: Start difference. First operand 403 states and 541 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:17,313 INFO L93 Difference]: Finished difference Result 714 states and 955 transitions. [2024-11-23 23:20:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-11-23 23:20:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:17,316 INFO L225 Difference]: With dead ends: 714 [2024-11-23 23:20:17,317 INFO L226 Difference]: Without dead ends: 407 [2024-11-23 23:20:17,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:17,318 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 117 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:17,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 563 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-23 23:20:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 403. [2024-11-23 23:20:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 356 states have (on average 1.297752808988764) internal successors, (462), 356 states have internal predecessors, (462), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 540 transitions. [2024-11-23 23:20:17,401 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 540 transitions. Word has length 118 [2024-11-23 23:20:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:17,401 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 540 transitions. [2024-11-23 23:20:17,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 23:20:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 540 transitions. [2024-11-23 23:20:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 23:20:17,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:17,403 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:17,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:20:17,403 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:17,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1656840533, now seen corresponding path program 1 times [2024-11-23 23:20:17,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:17,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616858415] [2024-11-23 23:20:17,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:18,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:18,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616858415] [2024-11-23 23:20:18,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616858415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:18,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:18,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 23:20:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533787032] [2024-11-23 23:20:18,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:18,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:20:18,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:18,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:20:18,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:20:18,140 INFO L87 Difference]: Start difference. First operand 403 states and 540 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:18,736 INFO L93 Difference]: Finished difference Result 739 states and 978 transitions. [2024-11-23 23:20:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:20:18,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 122 [2024-11-23 23:20:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:18,739 INFO L225 Difference]: With dead ends: 739 [2024-11-23 23:20:18,739 INFO L226 Difference]: Without dead ends: 432 [2024-11-23 23:20:18,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:20:18,740 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 457 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:18,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 541 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-23 23:20:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2024-11-23 23:20:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 359 states have (on average 1.2896935933147633) internal successors, (463), 359 states have internal predecessors, (463), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 541 transitions. [2024-11-23 23:20:18,817 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 541 transitions. Word has length 122 [2024-11-23 23:20:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:18,817 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 541 transitions. [2024-11-23 23:20:18,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 541 transitions. [2024-11-23 23:20:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:20:18,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:18,819 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:18,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:20:18,819 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:18,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1999509487, now seen corresponding path program 1 times [2024-11-23 23:20:18,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:18,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862202869] [2024-11-23 23:20:18,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:19,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862202869] [2024-11-23 23:20:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862202869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:20:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118908061] [2024-11-23 23:20:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:19,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:20:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:19,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:20:19,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:20:19,527 INFO L87 Difference]: Start difference. First operand 407 states and 541 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:20,123 INFO L93 Difference]: Finished difference Result 739 states and 974 transitions. [2024-11-23 23:20:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:20:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 123 [2024-11-23 23:20:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:20,126 INFO L225 Difference]: With dead ends: 739 [2024-11-23 23:20:20,127 INFO L226 Difference]: Without dead ends: 432 [2024-11-23 23:20:20,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:20:20,128 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 199 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:20,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 478 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-23 23:20:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2024-11-23 23:20:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 359 states have (on average 1.2841225626740946) internal successors, (461), 359 states have internal predecessors, (461), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 539 transitions. [2024-11-23 23:20:20,204 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 539 transitions. Word has length 123 [2024-11-23 23:20:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:20,204 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 539 transitions. [2024-11-23 23:20:20,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 539 transitions. [2024-11-23 23:20:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 23:20:20,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:20,206 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:20,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 23:20:20,206 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:20,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1268947704, now seen corresponding path program 1 times [2024-11-23 23:20:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658448984] [2024-11-23 23:20:20,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:21,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:21,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658448984] [2024-11-23 23:20:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658448984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:21,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:21,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:20:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273516135] [2024-11-23 23:20:21,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:21,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:20:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:21,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:20:21,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:20:21,141 INFO L87 Difference]: Start difference. First operand 407 states and 539 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:21,835 INFO L93 Difference]: Finished difference Result 739 states and 970 transitions. [2024-11-23 23:20:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:20:21,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 124 [2024-11-23 23:20:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:21,839 INFO L225 Difference]: With dead ends: 739 [2024-11-23 23:20:21,839 INFO L226 Difference]: Without dead ends: 432 [2024-11-23 23:20:21,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:20:21,841 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 255 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:21,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 580 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:20:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-23 23:20:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2024-11-23 23:20:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 359 states have (on average 1.2785515320334262) internal successors, (459), 359 states have internal predecessors, (459), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 537 transitions. [2024-11-23 23:20:21,922 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 537 transitions. Word has length 124 [2024-11-23 23:20:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:21,923 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 537 transitions. [2024-11-23 23:20:21,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 537 transitions. [2024-11-23 23:20:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:20:21,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:21,924 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:21,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:20:21,925 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:21,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1094508302, now seen corresponding path program 1 times [2024-11-23 23:20:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756457341] [2024-11-23 23:20:21,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-23 23:20:22,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:22,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756457341] [2024-11-23 23:20:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756457341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880964808] [2024-11-23 23:20:22,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:22,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:20:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:20:22,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:20:22,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:20:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:23,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:20:23,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:20:23,993 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 15 treesize of output 1 [2024-11-23 23:20:24,089 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 23:20:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-23 23:20:24,629 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 84 treesize of output 60 [2024-11-23 23:20:24,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2024-11-23 23:20:24,646 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 36 [2024-11-23 23:20:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-23 23:20:24,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:20:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:25,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880964808] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:20:25,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:20:25,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 7] total 20 [2024-11-23 23:20:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020058153] [2024-11-23 23:20:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:25,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:25,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:25,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:25,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:20:25,375 INFO L87 Difference]: Start difference. First operand 407 states and 537 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:25,715 INFO L93 Difference]: Finished difference Result 867 states and 1119 transitions. [2024-11-23 23:20:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:25,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2024-11-23 23:20:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:25,719 INFO L225 Difference]: With dead ends: 867 [2024-11-23 23:20:25,719 INFO L226 Difference]: Without dead ends: 560 [2024-11-23 23:20:25,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:20:25,721 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 51 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:25,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 524 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-23 23:20:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 482. [2024-11-23 23:20:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 434 states have (on average 1.26036866359447) internal successors, (547), 434 states have internal predecessors, (547), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 625 transitions. [2024-11-23 23:20:25,806 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 625 transitions. Word has length 126 [2024-11-23 23:20:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:25,806 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 625 transitions. [2024-11-23 23:20:25,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 625 transitions. [2024-11-23 23:20:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 23:20:25,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:25,808 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:25,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:20:26,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-23 23:20:26,012 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:26,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 855105044, now seen corresponding path program 1 times [2024-11-23 23:20:26,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:26,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559625921] [2024-11-23 23:20:26,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:26,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559625921] [2024-11-23 23:20:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559625921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:20:26,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352234226] [2024-11-23 23:20:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:26,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:20:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:26,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:20:26,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:20:26,487 INFO L87 Difference]: Start difference. First operand 482 states and 625 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:26,784 INFO L93 Difference]: Finished difference Result 1121 states and 1420 transitions. [2024-11-23 23:20:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:20:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 128 [2024-11-23 23:20:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:26,788 INFO L225 Difference]: With dead ends: 1121 [2024-11-23 23:20:26,788 INFO L226 Difference]: Without dead ends: 756 [2024-11-23 23:20:26,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:20:26,790 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 142 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:26,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 492 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-23 23:20:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 567. [2024-11-23 23:20:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 519 states have (on average 1.2504816955684008) internal successors, (649), 519 states have internal predecessors, (649), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 727 transitions. [2024-11-23 23:20:26,876 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 727 transitions. Word has length 128 [2024-11-23 23:20:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:26,877 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 727 transitions. [2024-11-23 23:20:26,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 727 transitions. [2024-11-23 23:20:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 23:20:26,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:26,878 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:26,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 23:20:26,879 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:26,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1514636566, now seen corresponding path program 1 times [2024-11-23 23:20:26,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:26,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530193616] [2024-11-23 23:20:26,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:27,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:27,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530193616] [2024-11-23 23:20:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530193616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611324408] [2024-11-23 23:20:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:27,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:27,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:27,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:27,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:27,322 INFO L87 Difference]: Start difference. First operand 567 states and 727 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:27,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:27,607 INFO L93 Difference]: Finished difference Result 1106 states and 1406 transitions. [2024-11-23 23:20:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:20:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 128 [2024-11-23 23:20:27,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:27,611 INFO L225 Difference]: With dead ends: 1106 [2024-11-23 23:20:27,611 INFO L226 Difference]: Without dead ends: 675 [2024-11-23 23:20:27,614 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 23:20:27,615 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 35 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:27,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 539 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-23 23:20:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 623. [2024-11-23 23:20:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 575 states have (on average 1.2452173913043478) internal successors, (716), 575 states have internal predecessors, (716), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 794 transitions. [2024-11-23 23:20:27,698 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 794 transitions. Word has length 128 [2024-11-23 23:20:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:27,699 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 794 transitions. [2024-11-23 23:20:27,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 794 transitions. [2024-11-23 23:20:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:20:27,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:27,701 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:27,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 23:20:27,701 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:27,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1776312839, now seen corresponding path program 1 times [2024-11-23 23:20:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:27,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666335975] [2024-11-23 23:20:27,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666335975] [2024-11-23 23:20:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666335975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:28,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:20:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055897326] [2024-11-23 23:20:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:28,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:20:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:28,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:20:28,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:20:28,441 INFO L87 Difference]: Start difference. First operand 623 states and 794 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:29,144 INFO L93 Difference]: Finished difference Result 1249 states and 1587 transitions. [2024-11-23 23:20:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:20:29,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 129 [2024-11-23 23:20:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:29,148 INFO L225 Difference]: With dead ends: 1249 [2024-11-23 23:20:29,149 INFO L226 Difference]: Without dead ends: 772 [2024-11-23 23:20:29,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:20:29,150 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 363 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:29,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 647 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:20:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-23 23:20:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 652. [2024-11-23 23:20:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 604 states have (on average 1.2516556291390728) internal successors, (756), 604 states have internal predecessors, (756), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 834 transitions. [2024-11-23 23:20:29,299 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 834 transitions. Word has length 129 [2024-11-23 23:20:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:29,299 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 834 transitions. [2024-11-23 23:20:29,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 834 transitions. [2024-11-23 23:20:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 23:20:29,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:29,305 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:29,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 23:20:29,305 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:29,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1874605513, now seen corresponding path program 1 times [2024-11-23 23:20:29,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075388242] [2024-11-23 23:20:29,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:29,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:29,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075388242] [2024-11-23 23:20:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075388242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:29,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591845082] [2024-11-23 23:20:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:29,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:29,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:29,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:29,512 INFO L87 Difference]: Start difference. First operand 652 states and 834 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:29,809 INFO L93 Difference]: Finished difference Result 1329 states and 1701 transitions. [2024-11-23 23:20:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:29,810 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2024-11-23 23:20:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:29,813 INFO L225 Difference]: With dead ends: 1329 [2024-11-23 23:20:29,813 INFO L226 Difference]: Without dead ends: 819 [2024-11-23 23:20:29,815 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 23:20:29,815 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 63 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:29,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 642 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-23 23:20:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 670. [2024-11-23 23:20:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 622 states have (on average 1.2636655948553055) internal successors, (786), 622 states have internal predecessors, (786), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 864 transitions. [2024-11-23 23:20:29,937 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 864 transitions. Word has length 132 [2024-11-23 23:20:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:29,937 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 864 transitions. [2024-11-23 23:20:29,938 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 864 transitions. [2024-11-23 23:20:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 23:20:29,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:29,939 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:29,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 23:20:29,940 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:29,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1990734427, now seen corresponding path program 1 times [2024-11-23 23:20:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634273285] [2024-11-23 23:20:29,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634273285] [2024-11-23 23:20:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634273285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:20:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510919621] [2024-11-23 23:20:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:30,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:20:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:30,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:20:30,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:20:30,075 INFO L87 Difference]: Start difference. First operand 670 states and 864 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:30,442 INFO L93 Difference]: Finished difference Result 1361 states and 1753 transitions. [2024-11-23 23:20:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:20:30,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2024-11-23 23:20:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:30,447 INFO L225 Difference]: With dead ends: 1361 [2024-11-23 23:20:30,447 INFO L226 Difference]: Without dead ends: 837 [2024-11-23 23:20:30,448 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 23:20:30,449 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 63 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:30,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 653 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-11-23 23:20:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 670. [2024-11-23 23:20:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 622 states have (on average 1.2636655948553055) internal successors, (786), 622 states have internal predecessors, (786), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 864 transitions. [2024-11-23 23:20:30,557 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 864 transitions. Word has length 133 [2024-11-23 23:20:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:30,557 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 864 transitions. [2024-11-23 23:20:30,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 864 transitions. [2024-11-23 23:20:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 23:20:30,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:30,561 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:30,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 23:20:30,561 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:30,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2009906548, now seen corresponding path program 1 times [2024-11-23 23:20:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:30,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65665930] [2024-11-23 23:20:30,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:30,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65665930] [2024-11-23 23:20:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65665930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:20:31,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247217463] [2024-11-23 23:20:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:31,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:20:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:31,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:20:31,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:31,250 INFO L87 Difference]: Start difference. First operand 670 states and 864 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:31,588 INFO L93 Difference]: Finished difference Result 1197 states and 1539 transitions. [2024-11-23 23:20:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:20:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 134 [2024-11-23 23:20:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:31,592 INFO L225 Difference]: With dead ends: 1197 [2024-11-23 23:20:31,592 INFO L226 Difference]: Without dead ends: 652 [2024-11-23 23:20:31,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:20:31,594 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 119 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:31,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 557 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:20:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2024-11-23 23:20:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2024-11-23 23:20:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 604 states have (on average 1.2218543046357615) internal successors, (738), 604 states have internal predecessors, (738), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 816 transitions. [2024-11-23 23:20:31,679 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 816 transitions. Word has length 134 [2024-11-23 23:20:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:31,679 INFO L471 AbstractCegarLoop]: Abstraction has 652 states and 816 transitions. [2024-11-23 23:20:31,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 816 transitions. [2024-11-23 23:20:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:20:31,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:31,681 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:31,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 23:20:31,681 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:31,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1690932808, now seen corresponding path program 1 times [2024-11-23 23:20:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166388592] [2024-11-23 23:20:31,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166388592] [2024-11-23 23:20:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166388592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:20:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294602237] [2024-11-23 23:20:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:32,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:20:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:32,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:20:32,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:20:32,261 INFO L87 Difference]: Start difference. First operand 652 states and 816 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:32,629 INFO L93 Difference]: Finished difference Result 1317 states and 1640 transitions. [2024-11-23 23:20:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:20:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 136 [2024-11-23 23:20:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:32,633 INFO L225 Difference]: With dead ends: 1317 [2024-11-23 23:20:32,633 INFO L226 Difference]: Without dead ends: 799 [2024-11-23 23:20:32,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:20:32,634 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 205 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:32,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 481 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:20:32,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-23 23:20:32,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 659. [2024-11-23 23:20:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 611 states have (on average 1.2176759410801965) internal successors, (744), 611 states have internal predecessors, (744), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 822 transitions. [2024-11-23 23:20:32,715 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 822 transitions. Word has length 136 [2024-11-23 23:20:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:32,716 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 822 transitions. [2024-11-23 23:20:32,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 822 transitions. [2024-11-23 23:20:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:20:32,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:32,718 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:32,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 23:20:32,718 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:32,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1031401286, now seen corresponding path program 1 times [2024-11-23 23:20:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692401108] [2024-11-23 23:20:32,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-23 23:20:34,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692401108] [2024-11-23 23:20:34,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692401108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:34,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:34,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:20:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016412481] [2024-11-23 23:20:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:34,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:20:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:34,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:20:34,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:20:34,148 INFO L87 Difference]: Start difference. First operand 659 states and 822 transitions. Second operand has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:35,078 INFO L93 Difference]: Finished difference Result 1318 states and 1621 transitions. [2024-11-23 23:20:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:20:35,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 136 [2024-11-23 23:20:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:35,083 INFO L225 Difference]: With dead ends: 1318 [2024-11-23 23:20:35,083 INFO L226 Difference]: Without dead ends: 806 [2024-11-23 23:20:35,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:20:35,085 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 173 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:35,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2081 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:20:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-23 23:20:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 656. [2024-11-23 23:20:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 608 states have (on average 1.2171052631578947) internal successors, (740), 608 states have internal predecessors, (740), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:20:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 818 transitions. [2024-11-23 23:20:35,177 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 818 transitions. Word has length 136 [2024-11-23 23:20:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:35,178 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 818 transitions. [2024-11-23 23:20:35,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.625) internal successors, (74), 16 states have internal predecessors, (74), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 23:20:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 818 transitions. [2024-11-23 23:20:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-23 23:20:35,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:35,181 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:20:35,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:20:35,181 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:35,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash -126764528, now seen corresponding path program 1 times [2024-11-23 23:20:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:35,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487854175] [2024-11-23 23:20:35,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 131 proven. 50 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2024-11-23 23:21:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:21:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487854175] [2024-11-23 23:21:46,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487854175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:21:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612796208] [2024-11-23 23:21:46,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:21:46,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:21:46,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:21:46,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:21:46,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:21:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:21:46,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:21:46,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:21:48,979 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 23:21:49,271 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 23:21:49,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:21:49,476 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 23 [2024-11-23 23:21:49,566 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 23 [2024-11-23 23:21:49,573 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 34 treesize of output 18 [2024-11-23 23:21:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 13 proven. 112 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2024-11-23 23:21:49,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:21:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612796208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:21:51,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:21:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7] total 26 [2024-11-23 23:21:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280466538] [2024-11-23 23:21:51,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:21:51,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 23:21:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:21:51,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 23:21:51,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:21:51,912 INFO L87 Difference]: Start difference. First operand 656 states and 818 transitions. Second operand has 26 states, 23 states have (on average 6.869565217391305) internal successors, (158), 24 states have internal predecessors, (158), 8 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-23 23:22:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:06,998 INFO L93 Difference]: Finished difference Result 2036 states and 2551 transitions. [2024-11-23 23:22:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-23 23:22:06,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 6.869565217391305) internal successors, (158), 24 states have internal predecessors, (158), 8 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 221 [2024-11-23 23:22:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:07,003 INFO L225 Difference]: With dead ends: 2036 [2024-11-23 23:22:07,003 INFO L226 Difference]: Without dead ends: 1738 [2024-11-23 23:22:07,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1305, Invalid=7437, Unknown=0, NotChecked=0, Total=8742 [2024-11-23 23:22:07,006 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 1684 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:07,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 2822 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-23 23:22:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2024-11-23 23:22:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 667. [2024-11-23 23:22:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 613 states have (on average 1.1924959216965743) internal successors, (731), 613 states have internal predecessors, (731), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-23 23:22:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 809 transitions. [2024-11-23 23:22:07,146 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 809 transitions. Word has length 221 [2024-11-23 23:22:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:07,147 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 809 transitions. [2024-11-23 23:22:07,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 6.869565217391305) internal successors, (158), 24 states have internal predecessors, (158), 8 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-23 23:22:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 809 transitions. [2024-11-23 23:22:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-23 23:22:07,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:07,150 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:22:07,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:22:07,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0dec896-cec1-4310-8e8d-9f06951c4c7b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-23 23:22:07,351 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:07,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -747374768, now seen corresponding path program 1 times [2024-11-23 23:22:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035341656] [2024-11-23 23:22:07,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:14,989 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: incomplete