./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1 --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 b64fc249111ce1622477a41c2b596a03a08ef102af2aafa943ca2a90b99192a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:41:30,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:41:30,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:41:30,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:41:30,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:41:30,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:41:30,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:41:30,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:41:30,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:41:30,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:41:30,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:41:30,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:41:30,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:41:30,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:41:30,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:41:30,571 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:41:30,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:41:30,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:41:30,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:41:30,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:41:30,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:41:30,573 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_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1 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 -> b64fc249111ce1622477a41c2b596a03a08ef102af2aafa943ca2a90b99192a7 [2024-12-02 15:41:30,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:41:30,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:41:30,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:41:30,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:41:30,794 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:41:30,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i [2024-12-02 15:41:33,464 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/data/8f3679b2d/c0c9e14e479c4dd6b7916b423c1de266/FLAG65d88d893 [2024-12-02 15:41:33,670 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:41:33,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i [2024-12-02 15:41:33,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/data/8f3679b2d/c0c9e14e479c4dd6b7916b423c1de266/FLAG65d88d893 [2024-12-02 15:41:33,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/data/8f3679b2d/c0c9e14e479c4dd6b7916b423c1de266 [2024-12-02 15:41:33,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:41:33,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:41:33,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:41:33,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:41:33,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:41:33,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:33,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c39e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33, skipping insertion in model container [2024-12-02 15:41:33,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:33,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:41:33,852 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_27b0d95f-d979-4a05-8e60-625807bb7ddc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i[915,928] [2024-12-02 15:41:33,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:41:33,937 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:41:33,945 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_27b0d95f-d979-4a05-8e60-625807bb7ddc/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-10.i[915,928] [2024-12-02 15:41:33,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:41:33,996 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:41:33,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33 WrapperNode [2024-12-02 15:41:33,997 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:41:33,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:41:33,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:41:33,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:41:34,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,055 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 336 [2024-12-02 15:41:34,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:41:34,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:41:34,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:41:34,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:41:34,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,087 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 15:41:34,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,100 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:41:34,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:41:34,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:41:34,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:41:34,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (1/1) ... [2024-12-02 15:41:34,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:41:34,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:34,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:41:34,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:41:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:41:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:41:34,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:41:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:41:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:41:34,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:41:34,248 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:41:34,249 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:41:34,715 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-12-02 15:41:34,715 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:41:34,727 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:41:34,727 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:41:34,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:34 BoogieIcfgContainer [2024-12-02 15:41:34,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:41:34,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:41:34,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:41:34,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:41:34,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:41:33" (1/3) ... [2024-12-02 15:41:34,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219cda7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:34, skipping insertion in model container [2024-12-02 15:41:34,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:33" (2/3) ... [2024-12-02 15:41:34,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219cda7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:34, skipping insertion in model container [2024-12-02 15:41:34,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:34" (3/3) ... [2024-12-02 15:41:34,735 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-10.i [2024-12-02 15:41:34,749 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:41:34,752 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-10.i that has 2 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:41:34,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:41:34,819 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;@6f6ae6da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:41:34,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:41:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 98 states have internal predecessors, (137), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 15:41:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-12-02 15:41:34,839 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:34,840 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:34,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:34,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1857015494, now seen corresponding path program 1 times [2024-12-02 15:41:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140313166] [2024-12-02 15:41:34,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:34,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-02 15:41:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140313166] [2024-12-02 15:41:35,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140313166] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:41:35,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524140929] [2024-12-02 15:41:35,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:35,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:41:35,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:41:35,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:41:35,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:41:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:35,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:41:35,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:41:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-02 15:41:35,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:41:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524140929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:35,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:41:35,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:41:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351856911] [2024-12-02 15:41:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:35,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:41:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:35,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:41:35,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:41:35,475 INFO L87 Difference]: Start difference. First operand has 148 states, 97 states have (on average 1.4123711340206186) internal successors, (137), 98 states have internal predecessors, (137), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:41:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:35,511 INFO L93 Difference]: Finished difference Result 289 states and 508 transitions. [2024-12-02 15:41:35,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:41:35,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 296 [2024-12-02 15:41:35,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:35,519 INFO L225 Difference]: With dead ends: 289 [2024-12-02 15:41:35,519 INFO L226 Difference]: Without dead ends: 144 [2024-12-02 15:41:35,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:41:35,525 INFO L435 NwaCegarLoop]: 226 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, 226 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 [2024-12-02 15:41:35,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:41:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-12-02 15:41:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-12-02 15:41:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 94 states have (on average 1.3829787234042554) internal successors, (130), 94 states have internal predecessors, (130), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 15:41:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 226 transitions. [2024-12-02 15:41:35,573 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 226 transitions. Word has length 296 [2024-12-02 15:41:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:35,574 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 226 transitions. [2024-12-02 15:41:35,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:41:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 226 transitions. [2024-12-02 15:41:35,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-12-02 15:41:35,579 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:35,580 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:35,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 15:41:35,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:41:35,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:35,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1341157954, now seen corresponding path program 1 times [2024-12-02 15:41:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947237566] [2024-12-02 15:41:35,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:41:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:41:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:41:36,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947237566] [2024-12-02 15:41:36,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947237566] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:41:36,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:41:36,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:41:36,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440355616] [2024-12-02 15:41:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:41:36,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:41:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:41:36,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:41:36,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:41:36,521 INFO L87 Difference]: Start difference. First operand 144 states and 226 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:41:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:41:36,816 INFO L93 Difference]: Finished difference Result 427 states and 673 transitions. [2024-12-02 15:41:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:41:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 296 [2024-12-02 15:41:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:41:36,821 INFO L225 Difference]: With dead ends: 427 [2024-12-02 15:41:36,821 INFO L226 Difference]: Without dead ends: 286 [2024-12-02 15:41:36,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:41:36,823 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 173 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:41:36,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 655 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:41:36,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-12-02 15:41:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 252. [2024-12-02 15:41:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 153 states have internal predecessors, (208), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 15:41:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 400 transitions. [2024-12-02 15:41:36,882 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 400 transitions. Word has length 296 [2024-12-02 15:41:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:41:36,883 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 400 transitions. [2024-12-02 15:41:36,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:41:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 400 transitions. [2024-12-02 15:41:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:41:36,890 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:41:36,891 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:41:36,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:41:36,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:41:36,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:41:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 208180488, now seen corresponding path program 1 times [2024-12-02 15:41:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:41:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948586861] [2024-12-02 15:41:36,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:41:36,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:41:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:42:36,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948586861] [2024-12-02 15:42:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948586861] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:42:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871623330] [2024-12-02 15:42:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:36,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:42:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:36,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:42:36,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:42:36,873 INFO L87 Difference]: Start difference. First operand 252 states and 400 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:42:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:42:41,559 INFO L93 Difference]: Finished difference Result 705 states and 1071 transitions. [2024-12-02 15:42:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:42:41,559 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-12-02 15:42:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:42:41,564 INFO L225 Difference]: With dead ends: 705 [2024-12-02 15:42:41,565 INFO L226 Difference]: Without dead ends: 564 [2024-12-02 15:42:41,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:42:41,567 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 757 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:42:41,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1860 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 15:42:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-12-02 15:42:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2024-12-02 15:42:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 238 states have (on average 1.315126050420168) internal successors, (313), 239 states have internal predecessors, (313), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 15:42:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 601 transitions. [2024-12-02 15:42:41,627 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 601 transitions. Word has length 297 [2024-12-02 15:42:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:42:41,628 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 601 transitions. [2024-12-02 15:42:41,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:42:41,628 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 601 transitions. [2024-12-02 15:42:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:42:41,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:42:41,633 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:42:41,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:42:41,633 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:42:41,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:42:41,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1356305928, now seen corresponding path program 1 times [2024-12-02 15:42:41,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:42:41,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467161172] [2024-12-02 15:42:41,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:42:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:42:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:42:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:42:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:42:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467161172] [2024-12-02 15:42:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467161172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:42:57,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:42:57,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 15:42:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111450471] [2024-12-02 15:42:57,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:42:57,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:42:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:42:57,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:42:57,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:42:57,666 INFO L87 Difference]: Start difference. First operand 389 states and 601 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:43:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:00,406 INFO L93 Difference]: Finished difference Result 781 states and 1172 transitions. [2024-12-02 15:43:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:43:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-12-02 15:43:00,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:00,410 INFO L225 Difference]: With dead ends: 781 [2024-12-02 15:43:00,410 INFO L226 Difference]: Without dead ends: 640 [2024-12-02 15:43:00,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:43:00,411 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 505 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:00,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1672 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 15:43:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-12-02 15:43:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 432. [2024-12-02 15:43:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 281 states have internal predecessors, (383), 144 states have call successors, (144), 6 states have call predecessors, (144), 6 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 15:43:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 671 transitions. [2024-12-02 15:43:00,447 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 671 transitions. Word has length 297 [2024-12-02 15:43:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:00,448 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 671 transitions. [2024-12-02 15:43:00,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:43:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 671 transitions. [2024-12-02 15:43:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:43:00,451 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:00,451 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:00,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:43:00,451 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:00,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2036364298, now seen corresponding path program 1 times [2024-12-02 15:43:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:00,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305899933] [2024-12-02 15:43:00,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:43:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:43:20,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:20,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305899933] [2024-12-02 15:43:20,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305899933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:43:20,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:43:20,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 15:43:20,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503883918] [2024-12-02 15:43:20,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:43:20,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:43:20,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:20,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:43:20,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:43:20,332 INFO L87 Difference]: Start difference. First operand 432 states and 671 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:43:24,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:24,484 INFO L93 Difference]: Finished difference Result 729 states and 1093 transitions. [2024-12-02 15:43:24,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:43:24,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 297 [2024-12-02 15:43:24,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:24,488 INFO L225 Difference]: With dead ends: 729 [2024-12-02 15:43:24,489 INFO L226 Difference]: Without dead ends: 588 [2024-12-02 15:43:24,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:43:24,490 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 997 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:24,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1507 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 15:43:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-12-02 15:43:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 458. [2024-12-02 15:43:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 303 states have (on average 1.3564356435643565) internal successors, (411), 303 states have internal predecessors, (411), 144 states have call successors, (144), 10 states have call predecessors, (144), 10 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 15:43:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 699 transitions. [2024-12-02 15:43:24,536 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 699 transitions. Word has length 297 [2024-12-02 15:43:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:24,536 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 699 transitions. [2024-12-02 15:43:24,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:43:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 699 transitions. [2024-12-02 15:43:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:43:24,537 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:24,538 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:24,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:43:24,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:24,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:24,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2000437560, now seen corresponding path program 1 times [2024-12-02 15:43:24,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:24,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290951980] [2024-12-02 15:43:24,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:43:24,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:43:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290951980] [2024-12-02 15:43:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290951980] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:43:44,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:43:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:43:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560042186] [2024-12-02 15:43:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:43:44,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:43:44,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:44,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:43:44,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:43:44,306 INFO L87 Difference]: Start difference. First operand 458 states and 699 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:43:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:47,173 INFO L93 Difference]: Finished difference Result 735 states and 1103 transitions. [2024-12-02 15:43:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:43:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 297 [2024-12-02 15:43:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:47,176 INFO L225 Difference]: With dead ends: 735 [2024-12-02 15:43:47,176 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 15:43:47,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:43:47,177 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 653 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:47,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1294 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:43:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 15:43:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 458. [2024-12-02 15:43:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 303 states have (on average 1.3564356435643565) internal successors, (411), 303 states have internal predecessors, (411), 144 states have call successors, (144), 10 states have call predecessors, (144), 10 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 15:43:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 699 transitions. [2024-12-02 15:43:47,226 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 699 transitions. Word has length 297 [2024-12-02 15:43:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:47,227 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 699 transitions. [2024-12-02 15:43:47,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:43:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 699 transitions. [2024-12-02 15:43:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:43:47,229 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:47,229 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:47,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:43:47,230 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:47,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash -132829496, now seen corresponding path program 1 times [2024-12-02 15:43:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099263829] [2024-12-02 15:43:47,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:43:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:43:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:43:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:43:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099263829] [2024-12-02 15:43:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099263829] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:43:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:43:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:43:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757519527] [2024-12-02 15:43:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:43:56,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:43:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:43:56,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:43:56,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:43:56,847 INFO L87 Difference]: Start difference. First operand 458 states and 699 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:43:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:43:58,024 INFO L93 Difference]: Finished difference Result 862 states and 1298 transitions. [2024-12-02 15:43:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:43:58,024 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-12-02 15:43:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:43:58,027 INFO L225 Difference]: With dead ends: 862 [2024-12-02 15:43:58,027 INFO L226 Difference]: Without dead ends: 546 [2024-12-02 15:43:58,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:43:58,028 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 491 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:43:58,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1346 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:43:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-12-02 15:43:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 460. [2024-12-02 15:43:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 305 states have (on average 1.3540983606557377) internal successors, (413), 305 states have internal predecessors, (413), 144 states have call successors, (144), 10 states have call predecessors, (144), 10 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 15:43:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 701 transitions. [2024-12-02 15:43:58,058 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 701 transitions. Word has length 297 [2024-12-02 15:43:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:43:58,059 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 701 transitions. [2024-12-02 15:43:58,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:43:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 701 transitions. [2024-12-02 15:43:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:43:58,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:43:58,061 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:43:58,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:43:58,061 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:43:58,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:43:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1785964218, now seen corresponding path program 1 times [2024-12-02 15:43:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:43:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745550121] [2024-12-02 15:43:58,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:43:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:43:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:44:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745550121] [2024-12-02 15:44:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745550121] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:13,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:13,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:44:13,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378286059] [2024-12-02 15:44:13,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:13,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:44:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:13,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:44:13,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:44:13,101 INFO L87 Difference]: Start difference. First operand 460 states and 701 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:44:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:14,560 INFO L93 Difference]: Finished difference Result 797 states and 1217 transitions. [2024-12-02 15:44:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:44:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-12-02 15:44:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:14,565 INFO L225 Difference]: With dead ends: 797 [2024-12-02 15:44:14,565 INFO L226 Difference]: Without dead ends: 656 [2024-12-02 15:44:14,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:44:14,567 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 463 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:14,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1134 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:44:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-12-02 15:44:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 555. [2024-12-02 15:44:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 349 states have (on average 1.3123209169054442) internal successors, (458), 350 states have internal predecessors, (458), 192 states have call successors, (192), 13 states have call predecessors, (192), 13 states have return successors, (192), 191 states have call predecessors, (192), 192 states have call successors, (192) [2024-12-02 15:44:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 842 transitions. [2024-12-02 15:44:14,622 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 842 transitions. Word has length 297 [2024-12-02 15:44:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:14,622 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 842 transitions. [2024-12-02 15:44:14,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:44:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 842 transitions. [2024-12-02 15:44:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-12-02 15:44:14,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:14,625 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:14,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:44:14,625 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:14,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2126974202, now seen corresponding path program 1 times [2024-12-02 15:44:14,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:14,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178155644] [2024-12-02 15:44:14,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:44:32,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:32,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178155644] [2024-12-02 15:44:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178155644] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:44:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618652602] [2024-12-02 15:44:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:32,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:44:32,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:32,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:44:32,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:44:32,574 INFO L87 Difference]: Start difference. First operand 555 states and 842 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:44:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:35,577 INFO L93 Difference]: Finished difference Result 1185 states and 1790 transitions. [2024-12-02 15:44:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:44:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 297 [2024-12-02 15:44:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:35,583 INFO L225 Difference]: With dead ends: 1185 [2024-12-02 15:44:35,583 INFO L226 Difference]: Without dead ends: 881 [2024-12-02 15:44:35,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:44:35,585 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 421 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:35,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1762 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:44:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-12-02 15:44:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 734. [2024-12-02 15:44:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 477 states have (on average 1.3396226415094339) internal successors, (639), 477 states have internal predecessors, (639), 240 states have call successors, (240), 16 states have call predecessors, (240), 16 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2024-12-02 15:44:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1119 transitions. [2024-12-02 15:44:35,683 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1119 transitions. Word has length 297 [2024-12-02 15:44:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:35,683 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1119 transitions. [2024-12-02 15:44:35,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:44:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1119 transitions. [2024-12-02 15:44:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:44:35,685 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:35,686 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:44:35,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:44:35,686 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:35,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1591407757, now seen corresponding path program 1 times [2024-12-02 15:44:35,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:35,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599891075] [2024-12-02 15:44:35,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:35,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:45:39,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:39,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599891075] [2024-12-02 15:45:39,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599891075] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:39,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:39,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 15:45:39,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511519173] [2024-12-02 15:45:39,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:39,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:45:39,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:39,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:45:39,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:45:39,099 INFO L87 Difference]: Start difference. First operand 734 states and 1119 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) [2024-12-02 15:45:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:45,957 INFO L93 Difference]: Finished difference Result 1080 states and 1619 transitions. [2024-12-02 15:45:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:45:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) Word has length 298 [2024-12-02 15:45:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:45,960 INFO L225 Difference]: With dead ends: 1080 [2024-12-02 15:45:45,960 INFO L226 Difference]: Without dead ends: 939 [2024-12-02 15:45:45,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 15:45:45,961 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1290 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:45,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2272 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 15:45:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2024-12-02 15:45:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 745. [2024-12-02 15:45:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 488 states have (on average 1.3442622950819672) internal successors, (656), 488 states have internal predecessors, (656), 240 states have call successors, (240), 16 states have call predecessors, (240), 16 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2024-12-02 15:45:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1136 transitions. [2024-12-02 15:45:46,035 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1136 transitions. Word has length 298 [2024-12-02 15:45:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:46,035 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 1136 transitions. [2024-12-02 15:45:46,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 4 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 4 states have call predecessors, (48), 4 states have call successors, (48) [2024-12-02 15:45:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1136 transitions. [2024-12-02 15:45:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:45:46,037 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:46,037 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:46,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:45:46,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:46,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 183599605, now seen corresponding path program 1 times [2024-12-02 15:45:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881008439] [2024-12-02 15:45:46,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:45:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881008439] [2024-12-02 15:45:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881008439] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659514510] [2024-12-02 15:45:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:46,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:46,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:46,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:46,417 INFO L87 Difference]: Start difference. First operand 745 states and 1136 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:45:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:46,544 INFO L93 Difference]: Finished difference Result 1335 states and 2020 transitions. [2024-12-02 15:45:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:46,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:45:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:46,548 INFO L225 Difference]: With dead ends: 1335 [2024-12-02 15:45:46,548 INFO L226 Difference]: Without dead ends: 863 [2024-12-02 15:45:46,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:46,550 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 114 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:46,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 410 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-12-02 15:45:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 820. [2024-12-02 15:45:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 559 states have (on average 1.3470483005366727) internal successors, (753), 560 states have internal predecessors, (753), 242 states have call successors, (242), 18 states have call predecessors, (242), 18 states have return successors, (242), 241 states have call predecessors, (242), 242 states have call successors, (242) [2024-12-02 15:45:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1237 transitions. [2024-12-02 15:45:46,607 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1237 transitions. Word has length 298 [2024-12-02 15:45:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:46,607 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1237 transitions. [2024-12-02 15:45:46,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:45:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1237 transitions. [2024-12-02 15:45:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:45:46,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:46,609 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:46,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:45:46,609 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:46,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash -359257485, now seen corresponding path program 1 times [2024-12-02 15:45:46,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:46,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700780016] [2024-12-02 15:45:46,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:46,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:45:59,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:59,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700780016] [2024-12-02 15:45:59,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700780016] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:59,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:45:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007680930] [2024-12-02 15:45:59,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:59,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:45:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:59,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:45:59,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:45:59,551 INFO L87 Difference]: Start difference. First operand 820 states and 1237 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:46:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:00,802 INFO L93 Difference]: Finished difference Result 1163 states and 1731 transitions. [2024-12-02 15:46:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:46:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:46:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:00,807 INFO L225 Difference]: With dead ends: 1163 [2024-12-02 15:46:00,807 INFO L226 Difference]: Without dead ends: 984 [2024-12-02 15:46:00,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:46:00,809 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 463 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:00,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1209 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:46:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-12-02 15:46:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 828. [2024-12-02 15:46:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 567 states have (on average 1.3492063492063493) internal successors, (765), 568 states have internal predecessors, (765), 242 states have call successors, (242), 18 states have call predecessors, (242), 18 states have return successors, (242), 241 states have call predecessors, (242), 242 states have call successors, (242) [2024-12-02 15:46:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1249 transitions. [2024-12-02 15:46:00,902 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1249 transitions. Word has length 298 [2024-12-02 15:46:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:00,902 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1249 transitions. [2024-12-02 15:46:00,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:46:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1249 transitions. [2024-12-02 15:46:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:46:00,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:00,905 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:00,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:46:00,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:00,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -752284495, now seen corresponding path program 1 times [2024-12-02 15:46:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643488782] [2024-12-02 15:46:00,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:47:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643488782] [2024-12-02 15:47:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643488782] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:47:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582072511] [2024-12-02 15:47:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:06,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:47:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:06,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:47:06,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:47:06,025 INFO L87 Difference]: Start difference. First operand 828 states and 1249 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:47:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:11,575 INFO L93 Difference]: Finished difference Result 1234 states and 1822 transitions. [2024-12-02 15:47:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:47:11,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 298 [2024-12-02 15:47:11,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:11,581 INFO L225 Difference]: With dead ends: 1234 [2024-12-02 15:47:11,581 INFO L226 Difference]: Without dead ends: 1055 [2024-12-02 15:47:11,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:47:11,583 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 628 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:11,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1772 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 15:47:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2024-12-02 15:47:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 849. [2024-12-02 15:47:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 587 states have (on average 1.352640545144804) internal successors, (794), 588 states have internal predecessors, (794), 242 states have call successors, (242), 19 states have call predecessors, (242), 19 states have return successors, (242), 241 states have call predecessors, (242), 242 states have call successors, (242) [2024-12-02 15:47:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1278 transitions. [2024-12-02 15:47:11,673 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1278 transitions. Word has length 298 [2024-12-02 15:47:11,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:11,673 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1278 transitions. [2024-12-02 15:47:11,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:47:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1278 transitions. [2024-12-02 15:47:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:47:11,676 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:11,676 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:11,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:47:11,677 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:11,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2116753525, now seen corresponding path program 1 times [2024-12-02 15:47:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:11,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463969930] [2024-12-02 15:47:11,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:47:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463969930] [2024-12-02 15:47:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463969930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:11,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:11,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:47:11,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338409542] [2024-12-02 15:47:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:11,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:47:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:11,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:47:11,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:47:11,937 INFO L87 Difference]: Start difference. First operand 849 states and 1278 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:47:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:12,062 INFO L93 Difference]: Finished difference Result 1741 states and 2585 transitions. [2024-12-02 15:47:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:47:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:47:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:12,068 INFO L225 Difference]: With dead ends: 1741 [2024-12-02 15:47:12,068 INFO L226 Difference]: Without dead ends: 1041 [2024-12-02 15:47:12,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:47:12,071 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 39 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:12,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 719 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:47:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2024-12-02 15:47:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 996. [2024-12-02 15:47:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 714 states have (on average 1.334733893557423) internal successors, (953), 719 states have internal predecessors, (953), 256 states have call successors, (256), 25 states have call predecessors, (256), 25 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:47:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1465 transitions. [2024-12-02 15:47:12,147 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1465 transitions. Word has length 298 [2024-12-02 15:47:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:12,147 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1465 transitions. [2024-12-02 15:47:12,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:47:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1465 transitions. [2024-12-02 15:47:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:47:12,149 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:12,149 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:12,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:47:12,149 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:12,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash 722184627, now seen corresponding path program 1 times [2024-12-02 15:47:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535940485] [2024-12-02 15:47:12,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:12,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:47:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535940485] [2024-12-02 15:47:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535940485] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:32,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:32,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 15:47:32,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902902183] [2024-12-02 15:47:32,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:32,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:47:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:32,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:47:32,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:47:32,876 INFO L87 Difference]: Start difference. First operand 996 states and 1465 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:47:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:47:36,888 INFO L93 Difference]: Finished difference Result 1917 states and 2775 transitions. [2024-12-02 15:47:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:47:36,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 298 [2024-12-02 15:47:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:47:36,894 INFO L225 Difference]: With dead ends: 1917 [2024-12-02 15:47:36,894 INFO L226 Difference]: Without dead ends: 1253 [2024-12-02 15:47:36,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:47:36,897 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 481 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:47:36,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1839 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 15:47:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2024-12-02 15:47:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 999. [2024-12-02 15:47:37,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 717 states have (on average 1.3347280334728033) internal successors, (957), 722 states have internal predecessors, (957), 256 states have call successors, (256), 25 states have call predecessors, (256), 25 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:47:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1469 transitions. [2024-12-02 15:47:37,019 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1469 transitions. Word has length 298 [2024-12-02 15:47:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:47:37,020 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1469 transitions. [2024-12-02 15:47:37,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:47:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1469 transitions. [2024-12-02 15:47:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:47:37,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:47:37,022 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:47:37,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:47:37,022 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:47:37,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:47:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1954334899, now seen corresponding path program 1 times [2024-12-02 15:47:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:47:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572280586] [2024-12-02 15:47:37,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:47:37,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:47:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:47:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:47:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:47:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572280586] [2024-12-02 15:47:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572280586] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:47:59,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:47:59,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:47:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73343928] [2024-12-02 15:47:59,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:47:59,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:47:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:47:59,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:47:59,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:47:59,196 INFO L87 Difference]: Start difference. First operand 999 states and 1469 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:48:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:02,342 INFO L93 Difference]: Finished difference Result 1901 states and 2756 transitions. [2024-12-02 15:48:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:48:02,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 298 [2024-12-02 15:48:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:02,348 INFO L225 Difference]: With dead ends: 1901 [2024-12-02 15:48:02,348 INFO L226 Difference]: Without dead ends: 1234 [2024-12-02 15:48:02,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:48:02,350 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 366 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:02,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1783 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:48:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-12-02 15:48:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 994. [2024-12-02 15:48:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 712 states have (on average 1.3342696629213484) internal successors, (950), 717 states have internal predecessors, (950), 256 states have call successors, (256), 25 states have call predecessors, (256), 25 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:48:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1462 transitions. [2024-12-02 15:48:02,425 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1462 transitions. Word has length 298 [2024-12-02 15:48:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:02,425 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1462 transitions. [2024-12-02 15:48:02,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:48:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1462 transitions. [2024-12-02 15:48:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:48:02,427 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:02,427 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:02,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:48:02,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:02,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1014615797, now seen corresponding path program 1 times [2024-12-02 15:48:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:02,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110293862] [2024-12-02 15:48:02,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:48:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:48:54,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:48:54,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110293862] [2024-12-02 15:48:54,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110293862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:48:54,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:48:54,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 15:48:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625212583] [2024-12-02 15:48:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:48:54,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:48:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:48:54,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:48:54,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:48:54,153 INFO L87 Difference]: Start difference. First operand 994 states and 1462 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:48:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:48:59,679 INFO L93 Difference]: Finished difference Result 1383 states and 2012 transitions. [2024-12-02 15:48:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:48:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 298 [2024-12-02 15:48:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:48:59,684 INFO L225 Difference]: With dead ends: 1383 [2024-12-02 15:48:59,684 INFO L226 Difference]: Without dead ends: 1147 [2024-12-02 15:48:59,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=256, Invalid=934, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:48:59,685 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 916 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:48:59,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1721 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 15:48:59,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-12-02 15:48:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1007. [2024-12-02 15:48:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 723 states have (on average 1.3333333333333333) internal successors, (964), 728 states have internal predecessors, (964), 256 states have call successors, (256), 27 states have call predecessors, (256), 27 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:48:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1476 transitions. [2024-12-02 15:48:59,748 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1476 transitions. Word has length 298 [2024-12-02 15:48:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:48:59,748 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1476 transitions. [2024-12-02 15:48:59,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:48:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1476 transitions. [2024-12-02 15:48:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:48:59,750 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:48:59,750 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:48:59,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:48:59,750 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:48:59,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:48:59,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1505344137, now seen corresponding path program 1 times [2024-12-02 15:48:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:48:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922189567] [2024-12-02 15:48:59,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:48:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:48:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:01,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922189567] [2024-12-02 15:49:01,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922189567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:01,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:01,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 15:49:01,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500002973] [2024-12-02 15:49:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:01,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:49:01,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:01,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:49:01,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:49:01,539 INFO L87 Difference]: Start difference. First operand 1007 states and 1476 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:02,407 INFO L93 Difference]: Finished difference Result 1726 states and 2482 transitions. [2024-12-02 15:49:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:49:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:49:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:02,412 INFO L225 Difference]: With dead ends: 1726 [2024-12-02 15:49:02,412 INFO L226 Difference]: Without dead ends: 1490 [2024-12-02 15:49:02,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:49:02,413 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 295 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:02,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1150 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:49:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-12-02 15:49:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1042. [2024-12-02 15:49:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 758 states have (on average 1.3403693931398417) internal successors, (1016), 763 states have internal predecessors, (1016), 256 states have call successors, (256), 27 states have call predecessors, (256), 27 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:49:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1528 transitions. [2024-12-02 15:49:02,509 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1528 transitions. Word has length 298 [2024-12-02 15:49:02,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:02,510 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1528 transitions. [2024-12-02 15:49:02,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1528 transitions. [2024-12-02 15:49:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:49:02,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:02,512 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:02,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:49:02,512 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:02,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash -666220875, now seen corresponding path program 1 times [2024-12-02 15:49:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697985147] [2024-12-02 15:49:02,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697985147] [2024-12-02 15:49:12,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697985147] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:12,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:12,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 15:49:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453471939] [2024-12-02 15:49:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:12,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:49:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:12,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:49:12,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:49:12,439 INFO L87 Difference]: Start difference. First operand 1042 states and 1528 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:13,709 INFO L93 Difference]: Finished difference Result 1477 states and 2140 transitions. [2024-12-02 15:49:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:49:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:49:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:13,715 INFO L225 Difference]: With dead ends: 1477 [2024-12-02 15:49:13,715 INFO L226 Difference]: Without dead ends: 1225 [2024-12-02 15:49:13,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:49:13,716 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 338 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:13,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1085 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:49:13,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-12-02 15:49:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1048. [2024-12-02 15:49:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 764 states have (on average 1.3429319371727748) internal successors, (1026), 769 states have internal predecessors, (1026), 256 states have call successors, (256), 27 states have call predecessors, (256), 27 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:49:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1538 transitions. [2024-12-02 15:49:13,791 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1538 transitions. Word has length 298 [2024-12-02 15:49:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:13,792 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1538 transitions. [2024-12-02 15:49:13,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1538 transitions. [2024-12-02 15:49:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 15:49:13,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:13,795 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:13,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:49:13,795 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:13,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash -966759115, now seen corresponding path program 1 times [2024-12-02 15:49:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509331078] [2024-12-02 15:49:13,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509331078] [2024-12-02 15:49:31,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509331078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:31,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:31,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:49:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944263577] [2024-12-02 15:49:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:31,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:49:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:31,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:49:31,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:49:31,564 INFO L87 Difference]: Start difference. First operand 1048 states and 1538 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:33,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:33,296 INFO L93 Difference]: Finished difference Result 2033 states and 2951 transitions. [2024-12-02 15:49:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:49:33,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 298 [2024-12-02 15:49:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:33,301 INFO L225 Difference]: With dead ends: 2033 [2024-12-02 15:49:33,301 INFO L226 Difference]: Without dead ends: 1301 [2024-12-02 15:49:33,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:49:33,302 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 337 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:33,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1617 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 15:49:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-12-02 15:49:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1046. [2024-12-02 15:49:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 762 states have (on average 1.3425196850393701) internal successors, (1023), 767 states have internal predecessors, (1023), 256 states have call successors, (256), 27 states have call predecessors, (256), 27 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:49:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1535 transitions. [2024-12-02 15:49:33,373 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1535 transitions. Word has length 298 [2024-12-02 15:49:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:33,374 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1535 transitions. [2024-12-02 15:49:33,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1535 transitions. [2024-12-02 15:49:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-12-02 15:49:33,376 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:33,376 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:33,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:49:33,377 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:33,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1669961157, now seen corresponding path program 1 times [2024-12-02 15:49:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902028778] [2024-12-02 15:49:33,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:43,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:43,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902028778] [2024-12-02 15:49:43,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902028778] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:43,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:43,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:49:43,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537923589] [2024-12-02 15:49:43,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:43,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:49:43,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:43,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:49:43,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:49:43,573 INFO L87 Difference]: Start difference. First operand 1046 states and 1535 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:49:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:45,980 INFO L93 Difference]: Finished difference Result 1541 states and 2238 transitions. [2024-12-02 15:49:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:49:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 299 [2024-12-02 15:49:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:45,985 INFO L225 Difference]: With dead ends: 1541 [2024-12-02 15:49:45,985 INFO L226 Difference]: Without dead ends: 1289 [2024-12-02 15:49:45,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:49:45,986 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 475 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:45,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1431 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 15:49:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-12-02 15:49:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1064. [2024-12-02 15:49:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 780 states have (on average 1.344871794871795) internal successors, (1049), 785 states have internal predecessors, (1049), 256 states have call successors, (256), 27 states have call predecessors, (256), 27 states have return successors, (256), 251 states have call predecessors, (256), 256 states have call successors, (256) [2024-12-02 15:49:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1561 transitions. [2024-12-02 15:49:46,052 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1561 transitions. Word has length 299 [2024-12-02 15:49:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:46,052 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1561 transitions. [2024-12-02 15:49:46,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:49:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1561 transitions. [2024-12-02 15:49:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:49:46,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:46,054 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:46,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:49:46,054 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:46,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1633087270, now seen corresponding path program 1 times [2024-12-02 15:49:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:46,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011399026] [2024-12-02 15:49:46,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011399026] [2024-12-02 15:49:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011399026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:50,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 15:49:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842116333] [2024-12-02 15:49:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:50,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:49:50,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:50,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:49:50,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:49:50,773 INFO L87 Difference]: Start difference. First operand 1064 states and 1561 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:49:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:54,878 INFO L93 Difference]: Finished difference Result 1586 states and 2291 transitions. [2024-12-02 15:49:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:49:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 300 [2024-12-02 15:49:54,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:54,883 INFO L225 Difference]: With dead ends: 1586 [2024-12-02 15:49:54,883 INFO L226 Difference]: Without dead ends: 1334 [2024-12-02 15:49:54,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:49:54,886 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 726 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:54,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1823 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:49:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2024-12-02 15:49:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1130. [2024-12-02 15:49:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 840 states have (on average 1.3416666666666666) internal successors, (1127), 846 states have internal predecessors, (1127), 260 states have call successors, (260), 29 states have call predecessors, (260), 29 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) [2024-12-02 15:49:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1647 transitions. [2024-12-02 15:49:54,967 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1647 transitions. Word has length 300 [2024-12-02 15:49:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:54,968 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1647 transitions. [2024-12-02 15:49:54,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 3 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2024-12-02 15:49:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1647 transitions. [2024-12-02 15:49:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:49:54,970 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:54,970 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:54,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:49:54,970 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:54,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash 318524966, now seen corresponding path program 1 times [2024-12-02 15:49:54,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:54,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615560681] [2024-12-02 15:49:54,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:54,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:49:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:49:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:49:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615560681] [2024-12-02 15:49:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615560681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:49:56,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:49:56,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:49:56,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975371351] [2024-12-02 15:49:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:49:56,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:49:56,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:49:56,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:49:56,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:49:56,644 INFO L87 Difference]: Start difference. First operand 1130 states and 1647 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:49:57,339 INFO L93 Difference]: Finished difference Result 1588 states and 2243 transitions. [2024-12-02 15:49:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:49:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:49:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:49:57,344 INFO L225 Difference]: With dead ends: 1588 [2024-12-02 15:49:57,344 INFO L226 Difference]: Without dead ends: 1586 [2024-12-02 15:49:57,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:49:57,345 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 141 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:49:57,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2085 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:49:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-12-02 15:49:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1268. [2024-12-02 15:49:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 964 states have (on average 1.3464730290456433) internal successors, (1298), 972 states have internal predecessors, (1298), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:49:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1842 transitions. [2024-12-02 15:49:57,436 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1842 transitions. Word has length 300 [2024-12-02 15:49:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:49:57,437 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 1842 transitions. [2024-12-02 15:49:57,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:49:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1842 transitions. [2024-12-02 15:49:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:49:57,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:49:57,438 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:49:57,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:49:57,438 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:49:57,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:49:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 576690404, now seen corresponding path program 1 times [2024-12-02 15:49:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:49:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029081893] [2024-12-02 15:49:57,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:49:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:49:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:50:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029081893] [2024-12-02 15:50:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029081893] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:50:00,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:50:00,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 15:50:00,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452404915] [2024-12-02 15:50:00,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:50:00,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 15:50:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:00,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 15:50:00,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:50:00,420 INFO L87 Difference]: Start difference. First operand 1268 states and 1842 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:02,238 INFO L93 Difference]: Finished difference Result 1769 states and 2514 transitions. [2024-12-02 15:50:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 15:50:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:50:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:02,245 INFO L225 Difference]: With dead ends: 1769 [2024-12-02 15:50:02,245 INFO L226 Difference]: Without dead ends: 1767 [2024-12-02 15:50:02,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:50:02,247 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 399 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:02,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1501 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:50:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2024-12-02 15:50:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1290. [2024-12-02 15:50:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 986 states have (on average 1.354969574036511) internal successors, (1336), 994 states have internal predecessors, (1336), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:50:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1880 transitions. [2024-12-02 15:50:02,342 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1880 transitions. Word has length 300 [2024-12-02 15:50:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:02,342 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 1880 transitions. [2024-12-02 15:50:02,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1880 transitions. [2024-12-02 15:50:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:50:02,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:02,344 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:02,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:50:02,344 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:02,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 353223592, now seen corresponding path program 1 times [2024-12-02 15:50:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431305624] [2024-12-02 15:50:02,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:50:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431305624] [2024-12-02 15:50:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431305624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:50:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:50:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:50:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576390911] [2024-12-02 15:50:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:50:05,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:50:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:05,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:50:05,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:50:05,094 INFO L87 Difference]: Start difference. First operand 1290 states and 1880 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:06,806 INFO L93 Difference]: Finished difference Result 1962 states and 2780 transitions. [2024-12-02 15:50:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:50:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:50:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:06,813 INFO L225 Difference]: With dead ends: 1962 [2024-12-02 15:50:06,813 INFO L226 Difference]: Without dead ends: 1960 [2024-12-02 15:50:06,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:50:06,814 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 279 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:06,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1999 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:50:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2024-12-02 15:50:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1346. [2024-12-02 15:50:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1042 states have (on average 1.3598848368522074) internal successors, (1417), 1050 states have internal predecessors, (1417), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:50:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1961 transitions. [2024-12-02 15:50:06,929 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1961 transitions. Word has length 300 [2024-12-02 15:50:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:06,929 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1961 transitions. [2024-12-02 15:50:06,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1961 transitions. [2024-12-02 15:50:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:50:06,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:06,932 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:06,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:50:06,932 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:06,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -961338712, now seen corresponding path program 1 times [2024-12-02 15:50:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72082823] [2024-12-02 15:50:06,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:50:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:50:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:50:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72082823] [2024-12-02 15:50:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72082823] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:50:09,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:50:09,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:50:09,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549349674] [2024-12-02 15:50:09,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:50:09,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:50:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:50:09,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:50:09,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:50:09,680 INFO L87 Difference]: Start difference. First operand 1346 states and 1961 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:50:10,545 INFO L93 Difference]: Finished difference Result 1664 states and 2357 transitions. [2024-12-02 15:50:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:50:10,545 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:50:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:50:10,550 INFO L225 Difference]: With dead ends: 1664 [2024-12-02 15:50:10,550 INFO L226 Difference]: Without dead ends: 1662 [2024-12-02 15:50:10,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:50:10,552 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 90 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:50:10,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2247 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:50:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2024-12-02 15:50:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1396. [2024-12-02 15:50:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1092 states have (on average 1.3571428571428572) internal successors, (1482), 1100 states have internal predecessors, (1482), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:50:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2026 transitions. [2024-12-02 15:50:10,669 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2026 transitions. Word has length 300 [2024-12-02 15:50:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:50:10,670 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 2026 transitions. [2024-12-02 15:50:10,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:50:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2026 transitions. [2024-12-02 15:50:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:50:10,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:10,671 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:50:10,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:50:10,671 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:10,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -169306918, now seen corresponding path program 1 times [2024-12-02 15:50:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294665289] [2024-12-02 15:50:10,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:50:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294665289] [2024-12-02 15:51:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294665289] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:51:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761468239] [2024-12-02 15:51:02,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:02,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:51:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:02,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:51:02,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:51:02,846 INFO L87 Difference]: Start difference. First operand 1396 states and 2026 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:07,028 INFO L93 Difference]: Finished difference Result 2629 states and 3717 transitions. [2024-12-02 15:51:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:51:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:51:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:07,033 INFO L225 Difference]: With dead ends: 2629 [2024-12-02 15:51:07,033 INFO L226 Difference]: Without dead ends: 2172 [2024-12-02 15:51:07,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:51:07,035 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 575 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:07,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1638 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 15:51:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-12-02 15:51:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1411. [2024-12-02 15:51:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1107 states have (on average 1.3577235772357723) internal successors, (1503), 1115 states have internal predecessors, (1503), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:51:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2047 transitions. [2024-12-02 15:51:07,161 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2047 transitions. Word has length 300 [2024-12-02 15:51:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:07,162 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2047 transitions. [2024-12-02 15:51:07,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2047 transitions. [2024-12-02 15:51:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:07,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:07,164 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:07,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 15:51:07,164 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:07,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash 202308966, now seen corresponding path program 1 times [2024-12-02 15:51:07,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:07,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766859750] [2024-12-02 15:51:07,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:14,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766859750] [2024-12-02 15:51:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766859750] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:14,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-12-02 15:51:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514038141] [2024-12-02 15:51:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:14,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:51:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:14,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:51:14,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:51:14,634 INFO L87 Difference]: Start difference. First operand 1411 states and 2047 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:51:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:21,683 INFO L93 Difference]: Finished difference Result 1960 states and 2765 transitions. [2024-12-02 15:51:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 15:51:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 300 [2024-12-02 15:51:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:21,688 INFO L225 Difference]: With dead ends: 1960 [2024-12-02 15:51:21,688 INFO L226 Difference]: Without dead ends: 1958 [2024-12-02 15:51:21,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=427, Invalid=1553, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 15:51:21,689 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 809 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 2741 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:21,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2354 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2741 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 15:51:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2024-12-02 15:51:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1416. [2024-12-02 15:51:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1112 states have (on average 1.3579136690647482) internal successors, (1510), 1120 states have internal predecessors, (1510), 272 states have call successors, (272), 31 states have call predecessors, (272), 31 states have return successors, (272), 264 states have call predecessors, (272), 272 states have call successors, (272) [2024-12-02 15:51:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2054 transitions. [2024-12-02 15:51:21,815 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2054 transitions. Word has length 300 [2024-12-02 15:51:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:21,815 INFO L471 AbstractCegarLoop]: Abstraction has 1416 states and 2054 transitions. [2024-12-02 15:51:21,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:51:21,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2054 transitions. [2024-12-02 15:51:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:21,817 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:21,817 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:21,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 15:51:21,818 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:21,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1112253338, now seen corresponding path program 1 times [2024-12-02 15:51:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624052488] [2024-12-02 15:51:21,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:24,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:24,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624052488] [2024-12-02 15:51:24,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624052488] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:24,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:24,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:51:24,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001209799] [2024-12-02 15:51:24,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:24,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:51:24,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:24,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:51:24,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:51:24,235 INFO L87 Difference]: Start difference. First operand 1416 states and 2054 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:51:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:27,329 INFO L93 Difference]: Finished difference Result 1747 states and 2501 transitions. [2024-12-02 15:51:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:51:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 300 [2024-12-02 15:51:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:27,334 INFO L225 Difference]: With dead ends: 1747 [2024-12-02 15:51:27,334 INFO L226 Difference]: Without dead ends: 1745 [2024-12-02 15:51:27,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 15:51:27,335 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 304 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:27,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1846 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:51:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2024-12-02 15:51:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1585. [2024-12-02 15:51:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1238 states have (on average 1.3336025848142166) internal successors, (1651), 1250 states have internal predecessors, (1651), 304 states have call successors, (304), 42 states have call predecessors, (304), 42 states have return successors, (304), 292 states have call predecessors, (304), 304 states have call successors, (304) [2024-12-02 15:51:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2259 transitions. [2024-12-02 15:51:27,515 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2259 transitions. Word has length 300 [2024-12-02 15:51:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:27,515 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2259 transitions. [2024-12-02 15:51:27,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:51:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2259 transitions. [2024-12-02 15:51:27,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:27,516 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:27,517 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:27,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 15:51:27,517 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:27,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1077554712, now seen corresponding path program 1 times [2024-12-02 15:51:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:27,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100270013] [2024-12-02 15:51:27,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100270013] [2024-12-02 15:51:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100270013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:51:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279454159] [2024-12-02 15:51:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:29,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:51:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:29,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:51:29,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:51:29,177 INFO L87 Difference]: Start difference. First operand 1585 states and 2259 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:30,299 INFO L93 Difference]: Finished difference Result 2389 states and 3386 transitions. [2024-12-02 15:51:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:51:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:51:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:30,305 INFO L225 Difference]: With dead ends: 2389 [2024-12-02 15:51:30,306 INFO L226 Difference]: Without dead ends: 1898 [2024-12-02 15:51:30,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:51:30,307 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 155 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:30,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 2121 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:51:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2024-12-02 15:51:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1616. [2024-12-02 15:51:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1269 states have (on average 1.3278171788810087) internal successors, (1685), 1281 states have internal predecessors, (1685), 304 states have call successors, (304), 42 states have call predecessors, (304), 42 states have return successors, (304), 292 states have call predecessors, (304), 304 states have call successors, (304) [2024-12-02 15:51:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2293 transitions. [2024-12-02 15:51:30,438 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2293 transitions. Word has length 300 [2024-12-02 15:51:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:30,439 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2293 transitions. [2024-12-02 15:51:30,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2293 transitions. [2024-12-02 15:51:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:30,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:30,441 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:30,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 15:51:30,442 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:30,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2055789096, now seen corresponding path program 1 times [2024-12-02 15:51:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197799541] [2024-12-02 15:51:30,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:30,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:33,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197799541] [2024-12-02 15:51:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197799541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:33,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:33,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:51:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242693191] [2024-12-02 15:51:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:33,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:51:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:33,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:51:33,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:51:33,633 INFO L87 Difference]: Start difference. First operand 1616 states and 2293 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:34,850 INFO L93 Difference]: Finished difference Result 2471 states and 3472 transitions. [2024-12-02 15:51:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:51:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:51:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:34,855 INFO L225 Difference]: With dead ends: 2471 [2024-12-02 15:51:34,855 INFO L226 Difference]: Without dead ends: 1952 [2024-12-02 15:51:34,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:51:34,857 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 191 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:34,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2049 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:51:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2024-12-02 15:51:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1653. [2024-12-02 15:51:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1285 states have (on average 1.3214007782101167) internal successors, (1698), 1299 states have internal predecessors, (1698), 322 states have call successors, (322), 45 states have call predecessors, (322), 45 states have return successors, (322), 308 states have call predecessors, (322), 322 states have call successors, (322) [2024-12-02 15:51:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2342 transitions. [2024-12-02 15:51:35,024 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2342 transitions. Word has length 300 [2024-12-02 15:51:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:35,025 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2342 transitions. [2024-12-02 15:51:35,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:35,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2342 transitions. [2024-12-02 15:51:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:35,026 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:35,026 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:35,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 15:51:35,026 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:35,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 775925418, now seen corresponding path program 1 times [2024-12-02 15:51:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23078868] [2024-12-02 15:51:35,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:51:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23078868] [2024-12-02 15:51:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23078868] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:51:36,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:51:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:51:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055254533] [2024-12-02 15:51:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:51:36,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:51:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:51:36,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:51:36,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:51:36,510 INFO L87 Difference]: Start difference. First operand 1653 states and 2342 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:51:37,740 INFO L93 Difference]: Finished difference Result 2480 states and 3474 transitions. [2024-12-02 15:51:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:51:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:51:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:51:37,745 INFO L225 Difference]: With dead ends: 2480 [2024-12-02 15:51:37,745 INFO L226 Difference]: Without dead ends: 1905 [2024-12-02 15:51:37,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:51:37,747 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 182 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:51:37,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1466 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:51:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-12-02 15:51:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1670. [2024-12-02 15:51:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1285 states have (on average 1.311284046692607) internal successors, (1685), 1299 states have internal predecessors, (1685), 336 states have call successors, (336), 48 states have call predecessors, (336), 48 states have return successors, (336), 322 states have call predecessors, (336), 336 states have call successors, (336) [2024-12-02 15:51:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2357 transitions. [2024-12-02 15:51:37,952 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2357 transitions. Word has length 300 [2024-12-02 15:51:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:51:37,952 INFO L471 AbstractCegarLoop]: Abstraction has 1670 states and 2357 transitions. [2024-12-02 15:51:37,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:51:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2357 transitions. [2024-12-02 15:51:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:51:37,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:51:37,954 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:51:37,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 15:51:37,954 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:51:37,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:51:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash 253394908, now seen corresponding path program 1 times [2024-12-02 15:51:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:51:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225975929] [2024-12-02 15:51:37,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:52:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225975929] [2024-12-02 15:52:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225975929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 15:52:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913934029] [2024-12-02 15:52:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:26,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:52:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:26,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:52:26,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:52:26,551 INFO L87 Difference]: Start difference. First operand 1670 states and 2357 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:30,874 INFO L93 Difference]: Finished difference Result 2863 states and 3964 transitions. [2024-12-02 15:52:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:52:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:52:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:30,880 INFO L225 Difference]: With dead ends: 2863 [2024-12-02 15:52:30,880 INFO L226 Difference]: Without dead ends: 2260 [2024-12-02 15:52:30,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:52:30,882 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 540 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:30,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1692 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 15:52:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2024-12-02 15:52:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1696. [2024-12-02 15:52:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1311 states have (on average 1.3157894736842106) internal successors, (1725), 1325 states have internal predecessors, (1725), 336 states have call successors, (336), 48 states have call predecessors, (336), 48 states have return successors, (336), 322 states have call predecessors, (336), 336 states have call successors, (336) [2024-12-02 15:52:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2397 transitions. [2024-12-02 15:52:31,047 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2397 transitions. Word has length 300 [2024-12-02 15:52:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:31,048 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 2397 transitions. [2024-12-02 15:52:31,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2397 transitions. [2024-12-02 15:52:31,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 15:52:31,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:31,049 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:31,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 15:52:31,049 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:31,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash 625010792, now seen corresponding path program 1 times [2024-12-02 15:52:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:31,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668541011] [2024-12-02 15:52:31,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:52:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668541011] [2024-12-02 15:52:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668541011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 15:52:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539631519] [2024-12-02 15:52:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:32,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:52:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:32,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:52:32,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:52:32,895 INFO L87 Difference]: Start difference. First operand 1696 states and 2397 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:33,769 INFO L93 Difference]: Finished difference Result 1863 states and 2606 transitions. [2024-12-02 15:52:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:52:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 300 [2024-12-02 15:52:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:33,774 INFO L225 Difference]: With dead ends: 1863 [2024-12-02 15:52:33,774 INFO L226 Difference]: Without dead ends: 1861 [2024-12-02 15:52:33,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:52:33,775 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 215 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:33,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1839 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:52:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-12-02 15:52:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1693. [2024-12-02 15:52:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1308 states have (on average 1.3134556574923548) internal successors, (1718), 1322 states have internal predecessors, (1718), 336 states have call successors, (336), 48 states have call predecessors, (336), 48 states have return successors, (336), 322 states have call predecessors, (336), 336 states have call successors, (336) [2024-12-02 15:52:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2390 transitions. [2024-12-02 15:52:33,940 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2390 transitions. Word has length 300 [2024-12-02 15:52:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:33,941 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2390 transitions. [2024-12-02 15:52:33,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2390 transitions. [2024-12-02 15:52:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 15:52:33,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:33,942 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:33,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 15:52:33,942 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:33,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1170561281, now seen corresponding path program 1 times [2024-12-02 15:52:33,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:33,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126190874] [2024-12-02 15:52:33,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:33,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:52:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:34,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126190874] [2024-12-02 15:52:34,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126190874] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:34,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:34,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:52:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665229895] [2024-12-02 15:52:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:34,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:52:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:34,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:52:34,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:52:34,047 INFO L87 Difference]: Start difference. First operand 1693 states and 2390 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:34,383 INFO L93 Difference]: Finished difference Result 3415 states and 4783 transitions. [2024-12-02 15:52:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:52:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 302 [2024-12-02 15:52:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:34,388 INFO L225 Difference]: With dead ends: 3415 [2024-12-02 15:52:34,388 INFO L226 Difference]: Without dead ends: 1896 [2024-12-02 15:52:34,390 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 [2024-12-02 15:52:34,390 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 65 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:34,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 880 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:52:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2024-12-02 15:52:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1745. [2024-12-02 15:52:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1344 states have (on average 1.3050595238095237) internal successors, (1754), 1359 states have internal predecessors, (1754), 348 states have call successors, (348), 52 states have call predecessors, (348), 52 states have return successors, (348), 333 states have call predecessors, (348), 348 states have call successors, (348) [2024-12-02 15:52:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2450 transitions. [2024-12-02 15:52:34,568 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2450 transitions. Word has length 302 [2024-12-02 15:52:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:34,568 INFO L471 AbstractCegarLoop]: Abstraction has 1745 states and 2450 transitions. [2024-12-02 15:52:34,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:34,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2450 transitions. [2024-12-02 15:52:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 15:52:34,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:34,570 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:34,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 15:52:34,570 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:34,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1822573875, now seen corresponding path program 1 times [2024-12-02 15:52:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:34,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628192121] [2024-12-02 15:52:34,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:52:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:52:34,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:52:34,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628192121] [2024-12-02 15:52:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628192121] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:52:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:52:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:52:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720199687] [2024-12-02 15:52:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:52:34,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:52:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:52:34,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:52:34,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:52:34,680 INFO L87 Difference]: Start difference. First operand 1745 states and 2450 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:52:35,057 INFO L93 Difference]: Finished difference Result 3782 states and 5261 transitions. [2024-12-02 15:52:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:52:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 302 [2024-12-02 15:52:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:52:35,065 INFO L225 Difference]: With dead ends: 3782 [2024-12-02 15:52:35,065 INFO L226 Difference]: Without dead ends: 2211 [2024-12-02 15:52:35,068 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 [2024-12-02 15:52:35,068 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 67 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:52:35,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 826 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:52:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2024-12-02 15:52:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2011. [2024-12-02 15:52:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1588 states have (on average 1.3104534005037782) internal successors, (2081), 1605 states have internal predecessors, (2081), 366 states have call successors, (366), 56 states have call predecessors, (366), 56 states have return successors, (366), 349 states have call predecessors, (366), 366 states have call successors, (366) [2024-12-02 15:52:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2813 transitions. [2024-12-02 15:52:35,276 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2813 transitions. Word has length 302 [2024-12-02 15:52:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:52:35,276 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 2813 transitions. [2024-12-02 15:52:35,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:52:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2813 transitions. [2024-12-02 15:52:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 15:52:35,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:52:35,278 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:52:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 15:52:35,278 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:52:35,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:52:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash -387751948, now seen corresponding path program 1 times [2024-12-02 15:52:35,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:52:35,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331946175] [2024-12-02 15:52:35,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:52:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:52:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:06,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331946175] [2024-12-02 15:53:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331946175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:53:06,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981377205] [2024-12-02 15:53:06,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:06,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:53:06,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:06,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:53:06,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:53:06,945 INFO L87 Difference]: Start difference. First operand 2011 states and 2813 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:53:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:10,356 INFO L93 Difference]: Finished difference Result 3779 states and 5153 transitions. [2024-12-02 15:53:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:53:10,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 302 [2024-12-02 15:53:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:10,363 INFO L225 Difference]: With dead ends: 3779 [2024-12-02 15:53:10,363 INFO L226 Difference]: Without dead ends: 3009 [2024-12-02 15:53:10,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:53:10,365 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 532 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:10,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1519 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 15:53:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2024-12-02 15:53:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1979. [2024-12-02 15:53:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1556 states have (on average 1.306555269922879) internal successors, (2033), 1573 states have internal predecessors, (2033), 366 states have call successors, (366), 56 states have call predecessors, (366), 56 states have return successors, (366), 349 states have call predecessors, (366), 366 states have call successors, (366) [2024-12-02 15:53:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2765 transitions. [2024-12-02 15:53:10,571 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2765 transitions. Word has length 302 [2024-12-02 15:53:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:10,572 INFO L471 AbstractCegarLoop]: Abstraction has 1979 states and 2765 transitions. [2024-12-02 15:53:10,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-02 15:53:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2765 transitions. [2024-12-02 15:53:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 15:53:10,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:10,574 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:10,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 15:53:10,574 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:10,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1202925578, now seen corresponding path program 1 times [2024-12-02 15:53:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921283872] [2024-12-02 15:53:10,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921283872] [2024-12-02 15:53:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921283872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:10,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:10,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675503649] [2024-12-02 15:53:10,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:10,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:10,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:10,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:10,656 INFO L87 Difference]: Start difference. First operand 1979 states and 2765 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:11,016 INFO L93 Difference]: Finished difference Result 4600 states and 6303 transitions. [2024-12-02 15:53:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 303 [2024-12-02 15:53:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:11,023 INFO L225 Difference]: With dead ends: 4600 [2024-12-02 15:53:11,024 INFO L226 Difference]: Without dead ends: 2774 [2024-12-02 15:53:11,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:11,028 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 43 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:11,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 436 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:53:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2024-12-02 15:53:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2708. [2024-12-02 15:53:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2168 states have (on average 1.2670664206642066) internal successors, (2747), 2199 states have internal predecessors, (2747), 446 states have call successors, (446), 93 states have call predecessors, (446), 93 states have return successors, (446), 415 states have call predecessors, (446), 446 states have call successors, (446) [2024-12-02 15:53:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3639 transitions. [2024-12-02 15:53:11,348 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3639 transitions. Word has length 303 [2024-12-02 15:53:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:11,348 INFO L471 AbstractCegarLoop]: Abstraction has 2708 states and 3639 transitions. [2024-12-02 15:53:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3639 transitions. [2024-12-02 15:53:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 15:53:11,350 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:11,350 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:11,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 15:53:11,350 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:11,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -14399265, now seen corresponding path program 1 times [2024-12-02 15:53:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:11,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220371413] [2024-12-02 15:53:11,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:11,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220371413] [2024-12-02 15:53:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220371413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:53:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119833059] [2024-12-02 15:53:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:11,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:53:11,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:11,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:53:11,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:11,425 INFO L87 Difference]: Start difference. First operand 2708 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:11,754 INFO L93 Difference]: Finished difference Result 5093 states and 6793 transitions. [2024-12-02 15:53:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:53:11,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 303 [2024-12-02 15:53:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:11,760 INFO L225 Difference]: With dead ends: 5093 [2024-12-02 15:53:11,760 INFO L226 Difference]: Without dead ends: 2538 [2024-12-02 15:53:11,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:53:11,764 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 57 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:11,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 441 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:53:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2024-12-02 15:53:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2138. [2024-12-02 15:53:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1712 states have (on average 1.262266355140187) internal successors, (2161), 1728 states have internal predecessors, (2161), 356 states have call successors, (356), 69 states have call predecessors, (356), 69 states have return successors, (356), 340 states have call predecessors, (356), 356 states have call successors, (356) [2024-12-02 15:53:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2873 transitions. [2024-12-02 15:53:11,987 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2873 transitions. Word has length 303 [2024-12-02 15:53:11,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:11,987 INFO L471 AbstractCegarLoop]: Abstraction has 2138 states and 2873 transitions. [2024-12-02 15:53:11,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:11,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2873 transitions. [2024-12-02 15:53:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:11,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:11,989 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:11,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 15:53:11,989 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:11,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2051201818, now seen corresponding path program 1 times [2024-12-02 15:53:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692605950] [2024-12-02 15:53:11,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:13,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:13,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692605950] [2024-12-02 15:53:13,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692605950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:13,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:53:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213824839] [2024-12-02 15:53:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:13,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:53:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:13,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:53:13,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:53:13,621 INFO L87 Difference]: Start difference. First operand 2138 states and 2873 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:15,659 INFO L93 Difference]: Finished difference Result 3470 states and 4615 transitions. [2024-12-02 15:53:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:53:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:15,665 INFO L225 Difference]: With dead ends: 3470 [2024-12-02 15:53:15,665 INFO L226 Difference]: Without dead ends: 2626 [2024-12-02 15:53:15,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:15,668 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 297 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:15,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 3182 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 15:53:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2024-12-02 15:53:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2170. [2024-12-02 15:53:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 1744 states have (on average 1.2597477064220184) internal successors, (2197), 1760 states have internal predecessors, (2197), 356 states have call successors, (356), 69 states have call predecessors, (356), 69 states have return successors, (356), 340 states have call predecessors, (356), 356 states have call successors, (356) [2024-12-02 15:53:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 2909 transitions. [2024-12-02 15:53:15,905 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 2909 transitions. Word has length 304 [2024-12-02 15:53:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 2170 states and 2909 transitions. [2024-12-02 15:53:15,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 2909 transitions. [2024-12-02 15:53:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:15,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:15,907 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:15,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 15:53:15,907 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1669776358, now seen corresponding path program 1 times [2024-12-02 15:53:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251529675] [2024-12-02 15:53:15,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:17,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251529675] [2024-12-02 15:53:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251529675] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:17,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:17,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:53:17,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889755001] [2024-12-02 15:53:17,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:17,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:53:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:17,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:53:17,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:53:17,928 INFO L87 Difference]: Start difference. First operand 2170 states and 2909 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:19,557 INFO L93 Difference]: Finished difference Result 2711 states and 3574 transitions. [2024-12-02 15:53:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 15:53:19,557 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:19,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:19,562 INFO L225 Difference]: With dead ends: 2711 [2024-12-02 15:53:19,562 INFO L226 Difference]: Without dead ends: 2709 [2024-12-02 15:53:19,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:53:19,563 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 151 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:19,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 2802 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:53:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2024-12-02 15:53:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2142. [2024-12-02 15:53:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1726 states have (on average 1.2618771726535343) internal successors, (2178), 1740 states have internal predecessors, (2178), 348 states have call successors, (348), 67 states have call predecessors, (348), 67 states have return successors, (348), 334 states have call predecessors, (348), 348 states have call successors, (348) [2024-12-02 15:53:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2874 transitions. [2024-12-02 15:53:19,767 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2874 transitions. Word has length 304 [2024-12-02 15:53:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 2142 states and 2874 transitions. [2024-12-02 15:53:19,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2874 transitions. [2024-12-02 15:53:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:19,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:19,768 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:19,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 15:53:19,769 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:19,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash 658659108, now seen corresponding path program 1 times [2024-12-02 15:53:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891591347] [2024-12-02 15:53:19,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:19,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:22,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891591347] [2024-12-02 15:53:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891591347] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:22,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:22,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:53:22,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726320602] [2024-12-02 15:53:22,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:22,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:53:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:22,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:53:22,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:53:22,150 INFO L87 Difference]: Start difference. First operand 2142 states and 2874 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:23,449 INFO L93 Difference]: Finished difference Result 2355 states and 3124 transitions. [2024-12-02 15:53:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:53:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:23,454 INFO L225 Difference]: With dead ends: 2355 [2024-12-02 15:53:23,454 INFO L226 Difference]: Without dead ends: 2353 [2024-12-02 15:53:23,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:23,456 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 71 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:23,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2261 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:53:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2024-12-02 15:53:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2171. [2024-12-02 15:53:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 1755 states have (on average 1.260968660968661) internal successors, (2213), 1769 states have internal predecessors, (2213), 348 states have call successors, (348), 67 states have call predecessors, (348), 67 states have return successors, (348), 334 states have call predecessors, (348), 348 states have call successors, (348) [2024-12-02 15:53:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2909 transitions. [2024-12-02 15:53:23,685 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2909 transitions. Word has length 304 [2024-12-02 15:53:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:23,686 INFO L471 AbstractCegarLoop]: Abstraction has 2171 states and 2909 transitions. [2024-12-02 15:53:23,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2909 transitions. [2024-12-02 15:53:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:23,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:23,687 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:23,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 15:53:23,687 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:23,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 655417576, now seen corresponding path program 1 times [2024-12-02 15:53:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441546452] [2024-12-02 15:53:23,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441546452] [2024-12-02 15:53:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441546452] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:53:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682019835] [2024-12-02 15:53:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:25,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:53:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:25,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:53:25,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:53:25,581 INFO L87 Difference]: Start difference. First operand 2171 states and 2909 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:27,048 INFO L93 Difference]: Finished difference Result 2482 states and 3282 transitions. [2024-12-02 15:53:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 15:53:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:27,052 INFO L225 Difference]: With dead ends: 2482 [2024-12-02 15:53:27,052 INFO L226 Difference]: Without dead ends: 2480 [2024-12-02 15:53:27,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:53:27,053 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 162 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:27,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1623 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:53:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2024-12-02 15:53:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2289. [2024-12-02 15:53:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 1835 states have (on average 1.252316076294278) internal successors, (2298), 1851 states have internal predecessors, (2298), 378 states have call successors, (378), 75 states have call predecessors, (378), 75 states have return successors, (378), 362 states have call predecessors, (378), 378 states have call successors, (378) [2024-12-02 15:53:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3054 transitions. [2024-12-02 15:53:27,279 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3054 transitions. Word has length 304 [2024-12-02 15:53:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:27,279 INFO L471 AbstractCegarLoop]: Abstraction has 2289 states and 3054 transitions. [2024-12-02 15:53:27,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3054 transitions. [2024-12-02 15:53:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:27,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:27,281 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 15:53:27,281 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:27,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash 81428456, now seen corresponding path program 1 times [2024-12-02 15:53:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508487412] [2024-12-02 15:53:27,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:30,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:30,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508487412] [2024-12-02 15:53:30,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508487412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:30,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:30,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 15:53:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911187140] [2024-12-02 15:53:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:30,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:53:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:30,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:53:30,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:53:30,547 INFO L87 Difference]: Start difference. First operand 2289 states and 3054 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:32,299 INFO L93 Difference]: Finished difference Result 3204 states and 4146 transitions. [2024-12-02 15:53:32,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:53:32,300 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:32,304 INFO L225 Difference]: With dead ends: 3204 [2024-12-02 15:53:32,305 INFO L226 Difference]: Without dead ends: 3202 [2024-12-02 15:53:32,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:53:32,306 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 177 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:32,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 3133 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:53:32,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2024-12-02 15:53:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2307. [2024-12-02 15:53:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 1853 states have (on average 1.2525634106853751) internal successors, (2321), 1869 states have internal predecessors, (2321), 378 states have call successors, (378), 75 states have call predecessors, (378), 75 states have return successors, (378), 362 states have call predecessors, (378), 378 states have call successors, (378) [2024-12-02 15:53:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3077 transitions. [2024-12-02 15:53:32,565 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3077 transitions. Word has length 304 [2024-12-02 15:53:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:32,565 INFO L471 AbstractCegarLoop]: Abstraction has 2307 states and 3077 transitions. [2024-12-02 15:53:32,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3077 transitions. [2024-12-02 15:53:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:32,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:32,567 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:32,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 15:53:32,567 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:32,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash -929688794, now seen corresponding path program 1 times [2024-12-02 15:53:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:32,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407433508] [2024-12-02 15:53:32,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407433508] [2024-12-02 15:53:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407433508] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 15:53:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311085709] [2024-12-02 15:53:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:36,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:53:36,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:36,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:53:36,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:36,645 INFO L87 Difference]: Start difference. First operand 2307 states and 3077 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:40,965 INFO L93 Difference]: Finished difference Result 3529 states and 4525 transitions. [2024-12-02 15:53:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:53:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:40,970 INFO L225 Difference]: With dead ends: 3529 [2024-12-02 15:53:40,970 INFO L226 Difference]: Without dead ends: 3527 [2024-12-02 15:53:40,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:53:40,971 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 390 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:40,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 3175 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 15:53:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-12-02 15:53:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 2307. [2024-12-02 15:53:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 1853 states have (on average 1.2525634106853751) internal successors, (2321), 1869 states have internal predecessors, (2321), 378 states have call successors, (378), 75 states have call predecessors, (378), 75 states have return successors, (378), 362 states have call predecessors, (378), 378 states have call successors, (378) [2024-12-02 15:53:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3077 transitions. [2024-12-02 15:53:41,215 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3077 transitions. Word has length 304 [2024-12-02 15:53:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:41,215 INFO L471 AbstractCegarLoop]: Abstraction has 2307 states and 3077 transitions. [2024-12-02 15:53:41,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3077 transitions. [2024-12-02 15:53:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:41,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:41,216 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:41,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 15:53:41,217 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:41,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -572790106, now seen corresponding path program 1 times [2024-12-02 15:53:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269431977] [2024-12-02 15:53:41,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269431977] [2024-12-02 15:53:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269431977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:53:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030116320] [2024-12-02 15:53:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:43,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:53:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:43,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:53:43,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:53:43,355 INFO L87 Difference]: Start difference. First operand 2307 states and 3077 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:44,660 INFO L93 Difference]: Finished difference Result 2543 states and 3351 transitions. [2024-12-02 15:53:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:53:44,661 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:44,665 INFO L225 Difference]: With dead ends: 2543 [2024-12-02 15:53:44,665 INFO L226 Difference]: Without dead ends: 2541 [2024-12-02 15:53:44,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:44,666 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 153 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:44,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1780 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:53:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2024-12-02 15:53:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2323. [2024-12-02 15:53:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1869 states have (on average 1.250936329588015) internal successors, (2338), 1885 states have internal predecessors, (2338), 378 states have call successors, (378), 75 states have call predecessors, (378), 75 states have return successors, (378), 362 states have call predecessors, (378), 378 states have call successors, (378) [2024-12-02 15:53:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3094 transitions. [2024-12-02 15:53:44,922 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3094 transitions. Word has length 304 [2024-12-02 15:53:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:44,922 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 3094 transitions. [2024-12-02 15:53:44,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3094 transitions. [2024-12-02 15:53:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:44,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:44,924 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:44,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 15:53:44,924 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:44,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2133829288, now seen corresponding path program 1 times [2024-12-02 15:53:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475826399] [2024-12-02 15:53:44,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:46,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:46,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475826399] [2024-12-02 15:53:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475826399] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:46,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:46,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 15:53:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232555007] [2024-12-02 15:53:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:46,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:53:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:46,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:53:46,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:53:46,942 INFO L87 Difference]: Start difference. First operand 2323 states and 3094 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:48,190 INFO L93 Difference]: Finished difference Result 2650 states and 3475 transitions. [2024-12-02 15:53:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:53:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:48,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:48,195 INFO L225 Difference]: With dead ends: 2650 [2024-12-02 15:53:48,195 INFO L226 Difference]: Without dead ends: 2648 [2024-12-02 15:53:48,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:48,196 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 133 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:48,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 2113 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:53:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-12-02 15:53:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2353. [2024-12-02 15:53:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 1899 states have (on average 1.2480252764612954) internal successors, (2370), 1915 states have internal predecessors, (2370), 378 states have call successors, (378), 75 states have call predecessors, (378), 75 states have return successors, (378), 362 states have call predecessors, (378), 378 states have call successors, (378) [2024-12-02 15:53:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 3126 transitions. [2024-12-02 15:53:48,456 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 3126 transitions. Word has length 304 [2024-12-02 15:53:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:48,456 INFO L471 AbstractCegarLoop]: Abstraction has 2353 states and 3126 transitions. [2024-12-02 15:53:48,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 3126 transitions. [2024-12-02 15:53:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:48,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:48,458 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:48,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 15:53:48,458 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:48,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1559840168, now seen corresponding path program 1 times [2024-12-02 15:53:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376667997] [2024-12-02 15:53:48,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:52,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:52,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376667997] [2024-12-02 15:53:52,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376667997] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:52,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:53:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123237670] [2024-12-02 15:53:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:52,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:53:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:52,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:53:52,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:53:52,399 INFO L87 Difference]: Start difference. First operand 2353 states and 3126 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:53,677 INFO L93 Difference]: Finished difference Result 2640 states and 3445 transitions. [2024-12-02 15:53:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:53:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:53,681 INFO L225 Difference]: With dead ends: 2640 [2024-12-02 15:53:53,681 INFO L226 Difference]: Without dead ends: 2638 [2024-12-02 15:53:53,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:53:53,682 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 97 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:53,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 2558 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:53:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2024-12-02 15:53:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2259. [2024-12-02 15:53:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 1813 states have (on average 1.2553778268063982) internal successors, (2276), 1827 states have internal predecessors, (2276), 372 states have call successors, (372), 73 states have call predecessors, (372), 73 states have return successors, (372), 358 states have call predecessors, (372), 372 states have call successors, (372) [2024-12-02 15:53:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3020 transitions. [2024-12-02 15:53:53,917 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3020 transitions. Word has length 304 [2024-12-02 15:53:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:53,917 INFO L471 AbstractCegarLoop]: Abstraction has 2259 states and 3020 transitions. [2024-12-02 15:53:53,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3020 transitions. [2024-12-02 15:53:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 15:53:53,919 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:53,919 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:53,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-12-02 15:53:53,919 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:53,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash 221977066, now seen corresponding path program 1 times [2024-12-02 15:53:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:53,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743367923] [2024-12-02 15:53:53,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-02 15:53:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:57,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743367923] [2024-12-02 15:53:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743367923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:53:57,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:53:57,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640655975] [2024-12-02 15:53:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:57,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:53:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:57,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:53:57,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:53:57,382 INFO L87 Difference]: Start difference. First operand 2259 states and 3020 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:58,449 INFO L93 Difference]: Finished difference Result 2540 states and 3330 transitions. [2024-12-02 15:53:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 15:53:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 304 [2024-12-02 15:53:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:58,453 INFO L225 Difference]: With dead ends: 2540 [2024-12-02 15:53:58,454 INFO L226 Difference]: Without dead ends: 2538 [2024-12-02 15:53:58,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:53:58,455 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 92 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:53:58,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2299 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:53:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2024-12-02 15:53:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2242. [2024-12-02 15:53:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1796 states have (on average 1.255011135857461) internal successors, (2254), 1810 states have internal predecessors, (2254), 372 states have call successors, (372), 73 states have call predecessors, (372), 73 states have return successors, (372), 358 states have call predecessors, (372), 372 states have call successors, (372) [2024-12-02 15:53:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2998 transitions. [2024-12-02 15:53:58,688 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2998 transitions. Word has length 304 [2024-12-02 15:53:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:58,688 INFO L471 AbstractCegarLoop]: Abstraction has 2242 states and 2998 transitions. [2024-12-02 15:53:58,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-02 15:53:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2998 transitions. [2024-12-02 15:53:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-12-02 15:53:58,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:58,689 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:53:58,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 15:53:58,690 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:58,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1207656791, now seen corresponding path program 1 times [2024-12-02 15:53:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330062354] [2024-12-02 15:53:58,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:53:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 102 proven. 426 refuted. 0 times theorem prover too weak. 3984 trivial. 0 not checked. [2024-12-02 15:53:59,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:53:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330062354] [2024-12-02 15:53:59,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330062354] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:53:59,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584733156] [2024-12-02 15:53:59,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:59,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:53:59,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:53:59,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:53:59,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27b0d95f-d979-4a05-8e60-625807bb7ddc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:53:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:59,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-12-02 15:53:59,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:54:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1923 proven. 660 refuted. 0 times theorem prover too weak. 1929 trivial. 0 not checked. [2024-12-02 15:54:04,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:54:31,042 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 45 DAG size of output: 41 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 15:54:42,346 WARN L286 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 30 DAG size of output: 23 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 15:55:27,972 WARN L286 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 30 DAG size of output: 23 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)