./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/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 4c0ba744090c8142a33dba842cf98027b64f47a633efca28c0047c8830fe4fa5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:45:59,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:45:59,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:45:59,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:45:59,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:45:59,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:45:59,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:45:59,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:45:59,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:45:59,217 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:45:59,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:45:59,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:45:59,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:45:59,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:45:59,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:45:59,219 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:45:59,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:45:59,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:45:59,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:45:59,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:45:59,220 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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/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 -> 4c0ba744090c8142a33dba842cf98027b64f47a633efca28c0047c8830fe4fa5 [2024-12-02 07:45:59,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:45:59,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:45:59,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:45:59,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:45:59,465 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:45:59,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i [2024-12-02 07:46:02,109 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/data/6478dd066/44c961b2e5064dc28518c28da3226e65/FLAG9b801581f [2024-12-02 07:46:02,351 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:46:02,352 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i [2024-12-02 07:46:02,359 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/data/6478dd066/44c961b2e5064dc28518c28da3226e65/FLAG9b801581f [2024-12-02 07:46:02,371 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/data/6478dd066/44c961b2e5064dc28518c28da3226e65 [2024-12-02 07:46:02,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:46:02,375 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:46:02,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:46:02,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:46:02,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:46:02,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8f0941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02, skipping insertion in model container [2024-12-02 07:46:02,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:46:02,493 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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i[916,929] [2024-12-02 07:46:02,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:46:02,558 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:46:02,566 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_d71a63af-c817-4e2c-a2d3-3b9f787a9751/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-32.i[916,929] [2024-12-02 07:46:02,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:46:02,616 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:46:02,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02 WrapperNode [2024-12-02 07:46:02,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:46:02,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:46:02,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:46:02,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:46:02,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,668 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 439 [2024-12-02 07:46:02,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:46:02,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:46:02,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:46:02,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:46:02,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,698 INFO L175 MemorySlicer]: Split 124 memory accesses to 6 slices as follows [2, 14, 23, 8, 24, 53]. 43 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 2, 3, 1, 2, 4]. The 15 writes are split as follows [0, 2, 5, 2, 2, 4]. [2024-12-02 07:46:02,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,715 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:46:02,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:46:02,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:46:02,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:46:02,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (1/1) ... [2024-12-02 07:46:02,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:46:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:46:02,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:46:02,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:46:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:46:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:46:02,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:46:02,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:46:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:46:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:46:02,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:46:02,873 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:46:02,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:46:03,266 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-12-02 07:46:03,266 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:46:03,275 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:46:03,275 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:46:03,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:46:03 BoogieIcfgContainer [2024-12-02 07:46:03,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:46:03,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:46:03,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:46:03,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:46:03,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:46:02" (1/3) ... [2024-12-02 07:46:03,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348ab330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:46:03, skipping insertion in model container [2024-12-02 07:46:03,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:02" (2/3) ... [2024-12-02 07:46:03,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348ab330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:46:03, skipping insertion in model container [2024-12-02 07:46:03,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:46:03" (3/3) ... [2024-12-02 07:46:03,292 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-32.i [2024-12-02 07:46:03,302 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:46:03,303 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-32.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:46:03,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:46:03,353 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;@3dacb326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:46:03,353 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:46:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 07:46:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 07:46:03,365 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:03,366 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:03,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:03,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2092387816, now seen corresponding path program 1 times [2024-12-02 07:46:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990498396] [2024-12-02 07:46:03,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-12-02 07:46:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990498396] [2024-12-02 07:46:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990498396] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:46:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424961376] [2024-12-02 07:46:03,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:03,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:46:03,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:46:03,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:46:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:03,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:46:03,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:46:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-12-02 07:46:03,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:46:03,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424961376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:03,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:46:03,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:46:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496371128] [2024-12-02 07:46:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:03,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:46:03,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:03,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:46:03,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:46:03,838 INFO L87 Difference]: Start difference. First operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:03,863 INFO L93 Difference]: Finished difference Result 191 states and 298 transitions. [2024-12-02 07:46:03,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:46:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2024-12-02 07:46:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:03,869 INFO L225 Difference]: With dead ends: 191 [2024-12-02 07:46:03,869 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 07:46:03,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 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 07:46:03,875 INFO L435 NwaCegarLoop]: 132 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, 132 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 07:46:03,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:46:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 07:46:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-02 07:46:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-12-02 07:46:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2024-12-02 07:46:03,907 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 129 [2024-12-02 07:46:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:03,907 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2024-12-02 07:46:03,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2024-12-02 07:46:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 07:46:03,910 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:03,910 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:03,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:46:04,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:46:04,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:04,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1151857908, now seen corresponding path program 1 times [2024-12-02 07:46:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913003541] [2024-12-02 07:46:04,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:04,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:04,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913003541] [2024-12-02 07:46:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913003541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:04,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:46:04,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422947614] [2024-12-02 07:46:04,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:04,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:46:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:04,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:46:04,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:46:04,419 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:04,602 INFO L93 Difference]: Finished difference Result 318 states and 444 transitions. [2024-12-02 07:46:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:46:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-12-02 07:46:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:04,605 INFO L225 Difference]: With dead ends: 318 [2024-12-02 07:46:04,605 INFO L226 Difference]: Without dead ends: 226 [2024-12-02 07:46:04,606 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 07:46:04,607 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 213 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:04,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 368 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:46:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-12-02 07:46:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 193. [2024-12-02 07:46:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 154 states have internal predecessors, (198), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 07:46:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2024-12-02 07:46:04,632 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 129 [2024-12-02 07:46:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:04,633 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2024-12-02 07:46:04,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2024-12-02 07:46:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 07:46:04,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:04,635 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:04,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:46:04,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:04,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash 732352654, now seen corresponding path program 1 times [2024-12-02 07:46:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:04,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302237940] [2024-12-02 07:46:04,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:04,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:05,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302237940] [2024-12-02 07:46:05,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302237940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:05,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:05,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 07:46:05,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325570543] [2024-12-02 07:46:05,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:05,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:46:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:05,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:46:05,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:46:05,903 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:06,463 INFO L93 Difference]: Finished difference Result 543 states and 762 transitions. [2024-12-02 07:46:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:46:06,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2024-12-02 07:46:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:06,467 INFO L225 Difference]: With dead ends: 543 [2024-12-02 07:46:06,467 INFO L226 Difference]: Without dead ends: 353 [2024-12-02 07:46:06,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:46:06,469 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 104 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:06,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 835 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:46:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-12-02 07:46:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2024-12-02 07:46:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 284 states have (on average 1.2992957746478873) internal successors, (369), 286 states have internal predecessors, (369), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:46:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 489 transitions. [2024-12-02 07:46:06,509 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 489 transitions. Word has length 137 [2024-12-02 07:46:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:06,509 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 489 transitions. [2024-12-02 07:46:06,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 489 transitions. [2024-12-02 07:46:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 07:46:06,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:06,512 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:06,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:46:06,512 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:06,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1144659733, now seen corresponding path program 1 times [2024-12-02 07:46:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:06,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486651964] [2024-12-02 07:46:06,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486651964] [2024-12-02 07:46:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486651964] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:08,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:08,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 07:46:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539073819] [2024-12-02 07:46:08,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:08,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:46:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:08,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:46:08,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:46:08,929 INFO L87 Difference]: Start difference. First operand 349 states and 489 transitions. Second operand has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:11,204 INFO L93 Difference]: Finished difference Result 860 states and 1188 transitions. [2024-12-02 07:46:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 07:46:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 139 [2024-12-02 07:46:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:11,209 INFO L225 Difference]: With dead ends: 860 [2024-12-02 07:46:11,210 INFO L226 Difference]: Without dead ends: 514 [2024-12-02 07:46:11,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2024-12-02 07:46:11,212 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 574 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:11,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1507 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:46:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-12-02 07:46:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 447. [2024-12-02 07:46:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 359 states have (on average 1.2785515320334262) internal successors, (459), 363 states have internal predecessors, (459), 80 states have call successors, (80), 7 states have call predecessors, (80), 7 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 07:46:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2024-12-02 07:46:11,251 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 139 [2024-12-02 07:46:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:11,251 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2024-12-02 07:46:11,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.466666666666667) internal successors, (52), 19 states have internal predecessors, (52), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2024-12-02 07:46:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 07:46:11,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:11,253 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:11,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:46:11,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:11,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 982324889, now seen corresponding path program 1 times [2024-12-02 07:46:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218858639] [2024-12-02 07:46:11,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 07:46:11,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:11,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218858639] [2024-12-02 07:46:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218858639] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:46:11,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20630571] [2024-12-02 07:46:11,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:11,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:46:11,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:46:11,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:46:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:11,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:46:11,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:46:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:11,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:46:11,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20630571] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:11,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:46:11,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 07:46:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747246000] [2024-12-02 07:46:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:11,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:46:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:11,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:46:11,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:46:11,575 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:11,636 INFO L93 Difference]: Finished difference Result 889 states and 1230 transitions. [2024-12-02 07:46:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:46:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2024-12-02 07:46:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:11,640 INFO L225 Difference]: With dead ends: 889 [2024-12-02 07:46:11,640 INFO L226 Difference]: Without dead ends: 462 [2024-12-02 07:46:11,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:46:11,642 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:11,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:46:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-12-02 07:46:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-12-02 07:46:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 374 states have (on average 1.267379679144385) internal successors, (474), 378 states have internal predecessors, (474), 80 states have call successors, (80), 7 states have call predecessors, (80), 7 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 07:46:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 634 transitions. [2024-12-02 07:46:11,691 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 634 transitions. Word has length 139 [2024-12-02 07:46:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:11,691 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 634 transitions. [2024-12-02 07:46:11,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 634 transitions. [2024-12-02 07:46:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 07:46:11,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:11,694 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:46:11,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:46:11,894 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:11,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -932708075, now seen corresponding path program 1 times [2024-12-02 07:46:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426551381] [2024-12-02 07:46:11,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:13,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426551381] [2024-12-02 07:46:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426551381] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:13,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:46:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774280079] [2024-12-02 07:46:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:13,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:46:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:13,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:46:13,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:46:13,024 INFO L87 Difference]: Start difference. First operand 462 states and 634 transitions. Second operand has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:14,421 INFO L93 Difference]: Finished difference Result 989 states and 1346 transitions. [2024-12-02 07:46:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:46:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 139 [2024-12-02 07:46:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:14,426 INFO L225 Difference]: With dead ends: 989 [2024-12-02 07:46:14,426 INFO L226 Difference]: Without dead ends: 547 [2024-12-02 07:46:14,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:46:14,428 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 314 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:14,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1655 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 07:46:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-12-02 07:46:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 379. [2024-12-02 07:46:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 312 states have (on average 1.2724358974358974) internal successors, (397), 314 states have internal predecessors, (397), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:46:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 517 transitions. [2024-12-02 07:46:14,472 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 517 transitions. Word has length 139 [2024-12-02 07:46:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:14,473 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 517 transitions. [2024-12-02 07:46:14,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.333333333333333) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 517 transitions. [2024-12-02 07:46:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 07:46:14,475 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:14,475 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:14,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:46:14,475 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:14,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash 905958465, now seen corresponding path program 1 times [2024-12-02 07:46:14,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:14,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643094411] [2024-12-02 07:46:14,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:14,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:15,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:15,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643094411] [2024-12-02 07:46:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643094411] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:15,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:46:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152633158] [2024-12-02 07:46:15,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:15,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:46:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:15,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:46:15,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:46:15,966 INFO L87 Difference]: Start difference. First operand 379 states and 517 transitions. Second operand has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:17,618 INFO L93 Difference]: Finished difference Result 769 states and 1043 transitions. [2024-12-02 07:46:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:46:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 140 [2024-12-02 07:46:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:17,620 INFO L225 Difference]: With dead ends: 769 [2024-12-02 07:46:17,620 INFO L226 Difference]: Without dead ends: 596 [2024-12-02 07:46:17,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:46:17,622 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 288 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:17,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1567 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:46:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-12-02 07:46:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 519. [2024-12-02 07:46:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 420 states have (on average 1.2547619047619047) internal successors, (527), 425 states have internal predecessors, (527), 88 states have call successors, (88), 10 states have call predecessors, (88), 10 states have return successors, (88), 83 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 07:46:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 703 transitions. [2024-12-02 07:46:17,674 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 703 transitions. Word has length 140 [2024-12-02 07:46:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:17,674 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 703 transitions. [2024-12-02 07:46:17,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 4.416666666666667) internal successors, (53), 16 states have internal predecessors, (53), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 703 transitions. [2024-12-02 07:46:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:17,676 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:17,677 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:17,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:46:17,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:17,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1228664258, now seen corresponding path program 1 times [2024-12-02 07:46:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954644078] [2024-12-02 07:46:17,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:18,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:18,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954644078] [2024-12-02 07:46:18,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954644078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:18,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:18,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:46:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299615358] [2024-12-02 07:46:18,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:18,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:46:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:18,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:46:18,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:46:18,085 INFO L87 Difference]: Start difference. First operand 519 states and 703 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:18,631 INFO L93 Difference]: Finished difference Result 1338 states and 1808 transitions. [2024-12-02 07:46:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:46:18,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2024-12-02 07:46:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:18,636 INFO L225 Difference]: With dead ends: 1338 [2024-12-02 07:46:18,636 INFO L226 Difference]: Without dead ends: 843 [2024-12-02 07:46:18,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:46:18,638 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 241 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:18,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 511 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:46:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-12-02 07:46:18,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 635. [2024-12-02 07:46:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 526 states have (on average 1.2718631178707225) internal successors, (669), 530 states have internal predecessors, (669), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 07:46:18,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 865 transitions. [2024-12-02 07:46:18,710 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 865 transitions. Word has length 141 [2024-12-02 07:46:18,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:18,710 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 865 transitions. [2024-12-02 07:46:18,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:18,710 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 865 transitions. [2024-12-02 07:46:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:18,712 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:18,712 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:18,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:46:18,712 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:18,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1911355907, now seen corresponding path program 1 times [2024-12-02 07:46:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23971973] [2024-12-02 07:46:18,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:18,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:19,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23971973] [2024-12-02 07:46:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23971973] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:19,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:46:19,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585192394] [2024-12-02 07:46:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:19,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:46:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:19,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:46:19,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:46:19,216 INFO L87 Difference]: Start difference. First operand 635 states and 865 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:19,524 INFO L93 Difference]: Finished difference Result 1110 states and 1483 transitions. [2024-12-02 07:46:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:46:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2024-12-02 07:46:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:19,530 INFO L225 Difference]: With dead ends: 1110 [2024-12-02 07:46:19,530 INFO L226 Difference]: Without dead ends: 1108 [2024-12-02 07:46:19,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:46:19,532 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 66 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:19,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 981 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:46:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-12-02 07:46:19,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1100. [2024-12-02 07:46:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 914 states have (on average 1.2428884026258207) internal successors, (1136), 925 states have internal predecessors, (1136), 166 states have call successors, (166), 19 states have call predecessors, (166), 19 states have return successors, (166), 155 states have call predecessors, (166), 166 states have call successors, (166) [2024-12-02 07:46:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1468 transitions. [2024-12-02 07:46:19,634 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1468 transitions. Word has length 141 [2024-12-02 07:46:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:19,635 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1468 transitions. [2024-12-02 07:46:19,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:19,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1468 transitions. [2024-12-02 07:46:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:19,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:19,637 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:19,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:46:19,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:19,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1376374685, now seen corresponding path program 1 times [2024-12-02 07:46:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858527726] [2024-12-02 07:46:19,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858527726] [2024-12-02 07:46:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858527726] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 07:46:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938103397] [2024-12-02 07:46:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:21,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 07:46:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:21,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 07:46:21,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:46:21,898 INFO L87 Difference]: Start difference. First operand 1100 states and 1468 transitions. Second operand has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:27,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:46:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:30,178 INFO L93 Difference]: Finished difference Result 2384 states and 3168 transitions. [2024-12-02 07:46:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 07:46:30,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-12-02 07:46:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:30,183 INFO L225 Difference]: With dead ends: 2384 [2024-12-02 07:46:30,183 INFO L226 Difference]: Without dead ends: 1287 [2024-12-02 07:46:30,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 07:46:30,185 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 380 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:30,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2023 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2247 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 07:46:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-12-02 07:46:30,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1105. [2024-12-02 07:46:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 919 states have (on average 1.2415669205658324) internal successors, (1141), 930 states have internal predecessors, (1141), 166 states have call successors, (166), 19 states have call predecessors, (166), 19 states have return successors, (166), 155 states have call predecessors, (166), 166 states have call successors, (166) [2024-12-02 07:46:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1473 transitions. [2024-12-02 07:46:30,316 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1473 transitions. Word has length 141 [2024-12-02 07:46:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:30,317 INFO L471 AbstractCegarLoop]: Abstraction has 1105 states and 1473 transitions. [2024-12-02 07:46:30,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.375) internal successors, (54), 20 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1473 transitions. [2024-12-02 07:46:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:30,319 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:30,319 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:30,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:46:30,319 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:30,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash 331365611, now seen corresponding path program 1 times [2024-12-02 07:46:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029665492] [2024-12-02 07:46:30,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029665492] [2024-12-02 07:46:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029665492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:46:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062046187] [2024-12-02 07:46:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:32,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:46:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:32,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:46:32,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:46:32,004 INFO L87 Difference]: Start difference. First operand 1105 states and 1473 transitions. Second operand has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:34,311 INFO L93 Difference]: Finished difference Result 1912 states and 2544 transitions. [2024-12-02 07:46:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:46:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 141 [2024-12-02 07:46:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:34,316 INFO L225 Difference]: With dead ends: 1912 [2024-12-02 07:46:34,316 INFO L226 Difference]: Without dead ends: 1296 [2024-12-02 07:46:34,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:46:34,318 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 291 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:34,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1937 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:46:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2024-12-02 07:46:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1054. [2024-12-02 07:46:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 879 states have (on average 1.242320819112628) internal successors, (1092), 889 states have internal predecessors, (1092), 156 states have call successors, (156), 18 states have call predecessors, (156), 18 states have return successors, (156), 146 states have call predecessors, (156), 156 states have call successors, (156) [2024-12-02 07:46:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1404 transitions. [2024-12-02 07:46:34,442 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1404 transitions. Word has length 141 [2024-12-02 07:46:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:34,442 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1404 transitions. [2024-12-02 07:46:34,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 4.5) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1404 transitions. [2024-12-02 07:46:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:34,444 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:34,444 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:46:34,444 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:34,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1357578131, now seen corresponding path program 1 times [2024-12-02 07:46:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654061003] [2024-12-02 07:46:34,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654061003] [2024-12-02 07:46:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654061003] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:46:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521181180] [2024-12-02 07:46:35,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:35,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:46:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:35,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:46:35,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:46:35,684 INFO L87 Difference]: Start difference. First operand 1054 states and 1404 transitions. Second operand has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:37,603 INFO L93 Difference]: Finished difference Result 2139 states and 2840 transitions. [2024-12-02 07:46:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:46:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 141 [2024-12-02 07:46:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:37,607 INFO L225 Difference]: With dead ends: 2139 [2024-12-02 07:46:37,607 INFO L226 Difference]: Without dead ends: 1113 [2024-12-02 07:46:37,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-12-02 07:46:37,609 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 357 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:37,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1324 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 07:46:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-12-02 07:46:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1057. [2024-12-02 07:46:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 879 states have (on average 1.2400455062571103) internal successors, (1090), 889 states have internal predecessors, (1090), 158 states have call successors, (158), 19 states have call predecessors, (158), 19 states have return successors, (158), 148 states have call predecessors, (158), 158 states have call successors, (158) [2024-12-02 07:46:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1406 transitions. [2024-12-02 07:46:37,713 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1406 transitions. Word has length 141 [2024-12-02 07:46:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:37,714 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1406 transitions. [2024-12-02 07:46:37,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.5) internal successors, (54), 15 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1406 transitions. [2024-12-02 07:46:37,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:46:37,715 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:37,715 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:37,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:46:37,715 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:37,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1250866724, now seen corresponding path program 1 times [2024-12-02 07:46:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:37,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975643561] [2024-12-02 07:46:37,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975643561] [2024-12-02 07:46:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975643561] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 07:46:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703212700] [2024-12-02 07:46:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:38,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:46:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:38,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:46:38,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:46:38,878 INFO L87 Difference]: Start difference. First operand 1057 states and 1406 transitions. Second operand has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:40,799 INFO L93 Difference]: Finished difference Result 2526 states and 3363 transitions. [2024-12-02 07:46:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 07:46:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 141 [2024-12-02 07:46:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:40,806 INFO L225 Difference]: With dead ends: 2526 [2024-12-02 07:46:40,806 INFO L226 Difference]: Without dead ends: 1505 [2024-12-02 07:46:40,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:46:40,808 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 201 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:40,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3265 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 07:46:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-12-02 07:46:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1255. [2024-12-02 07:46:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1048 states have (on average 1.2423664122137406) internal successors, (1302), 1060 states have internal predecessors, (1302), 184 states have call successors, (184), 22 states have call predecessors, (184), 22 states have return successors, (184), 172 states have call predecessors, (184), 184 states have call successors, (184) [2024-12-02 07:46:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1670 transitions. [2024-12-02 07:46:40,929 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1670 transitions. Word has length 141 [2024-12-02 07:46:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:40,930 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1670 transitions. [2024-12-02 07:46:40,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.6) internal successors, (54), 18 states have internal predecessors, (54), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:46:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1670 transitions. [2024-12-02 07:46:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:46:40,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:40,931 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:40,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:46:40,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:40,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:40,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2022448247, now seen corresponding path program 1 times [2024-12-02 07:46:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:40,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944481419] [2024-12-02 07:46:40,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:42,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:42,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944481419] [2024-12-02 07:46:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944481419] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:42,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 07:46:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651635072] [2024-12-02 07:46:42,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:42,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:46:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:42,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:46:42,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:46:42,486 INFO L87 Difference]: Start difference. First operand 1255 states and 1670 transitions. Second operand has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:45,462 INFO L93 Difference]: Finished difference Result 2692 states and 3564 transitions. [2024-12-02 07:46:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 07:46:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2024-12-02 07:46:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:45,469 INFO L225 Difference]: With dead ends: 2692 [2024-12-02 07:46:45,469 INFO L226 Difference]: Without dead ends: 1473 [2024-12-02 07:46:45,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:46:45,472 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 261 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:45,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2206 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:46:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-12-02 07:46:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1235. [2024-12-02 07:46:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1028 states have (on average 1.2412451361867705) internal successors, (1276), 1040 states have internal predecessors, (1276), 184 states have call successors, (184), 22 states have call predecessors, (184), 22 states have return successors, (184), 172 states have call predecessors, (184), 184 states have call successors, (184) [2024-12-02 07:46:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1644 transitions. [2024-12-02 07:46:45,606 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1644 transitions. Word has length 142 [2024-12-02 07:46:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:45,607 INFO L471 AbstractCegarLoop]: Abstraction has 1235 states and 1644 transitions. [2024-12-02 07:46:45,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 19 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1644 transitions. [2024-12-02 07:46:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:46:45,607 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:45,608 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:45,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:46:45,608 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:45,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1307651178, now seen corresponding path program 1 times [2024-12-02 07:46:45,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:45,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122696058] [2024-12-02 07:46:45,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:45,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122696058] [2024-12-02 07:46:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122696058] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:46:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164193219] [2024-12-02 07:46:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:46:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:46,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:46:46,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:46:46,028 INFO L87 Difference]: Start difference. First operand 1235 states and 1644 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:46,377 INFO L93 Difference]: Finished difference Result 2663 states and 3557 transitions. [2024-12-02 07:46:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:46:46,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2024-12-02 07:46:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:46,382 INFO L225 Difference]: With dead ends: 2663 [2024-12-02 07:46:46,382 INFO L226 Difference]: Without dead ends: 1867 [2024-12-02 07:46:46,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:46:46,384 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 74 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:46,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1128 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:46:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2024-12-02 07:46:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1690. [2024-12-02 07:46:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1429 states have (on average 1.251924422673198) internal successors, (1789), 1447 states have internal predecessors, (1789), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-12-02 07:46:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2253 transitions. [2024-12-02 07:46:46,540 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2253 transitions. Word has length 142 [2024-12-02 07:46:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:46,540 INFO L471 AbstractCegarLoop]: Abstraction has 1690 states and 2253 transitions. [2024-12-02 07:46:46,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:46:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2253 transitions. [2024-12-02 07:46:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:46:46,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:46,542 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:46,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:46:46,542 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1159940751, now seen corresponding path program 1 times [2024-12-02 07:46:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726777974] [2024-12-02 07:46:46,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726777974] [2024-12-02 07:46:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726777974] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:48,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:48,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 07:46:48,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230250470] [2024-12-02 07:46:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:48,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 07:46:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:48,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 07:46:48,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:46:48,340 INFO L87 Difference]: Start difference. First operand 1690 states and 2253 transitions. Second operand has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:52,335 INFO L93 Difference]: Finished difference Result 2884 states and 3850 transitions. [2024-12-02 07:46:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 07:46:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2024-12-02 07:46:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:52,343 INFO L225 Difference]: With dead ends: 2884 [2024-12-02 07:46:52,343 INFO L226 Difference]: Without dead ends: 1825 [2024-12-02 07:46:52,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2024-12-02 07:46:52,345 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 232 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:52,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2692 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 07:46:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-12-02 07:46:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1697. [2024-12-02 07:46:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1436 states have (on average 1.251392757660167) internal successors, (1797), 1454 states have internal predecessors, (1797), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-12-02 07:46:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2261 transitions. [2024-12-02 07:46:52,466 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2261 transitions. Word has length 142 [2024-12-02 07:46:52,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:52,467 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2261 transitions. [2024-12-02 07:46:52,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.4375) internal successors, (55), 20 states have internal predecessors, (55), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:46:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2261 transitions. [2024-12-02 07:46:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:46:52,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:52,468 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:52,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:46:52,469 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:52,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:52,469 INFO L85 PathProgramCache]: Analyzing trace with hash -340917670, now seen corresponding path program 1 times [2024-12-02 07:46:52,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:52,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451620591] [2024-12-02 07:46:52,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:52,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451620591] [2024-12-02 07:46:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451620591] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:53,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:53,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:46:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551533828] [2024-12-02 07:46:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:53,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:46:53,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:53,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:46:53,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:46:53,228 INFO L87 Difference]: Start difference. First operand 1697 states and 2261 transitions. Second operand has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:46:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:54,299 INFO L93 Difference]: Finished difference Result 3386 states and 4507 transitions. [2024-12-02 07:46:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:46:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2024-12-02 07:46:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:54,304 INFO L225 Difference]: With dead ends: 3386 [2024-12-02 07:46:54,304 INFO L226 Difference]: Without dead ends: 1725 [2024-12-02 07:46:54,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:46:54,307 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 104 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:54,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 2178 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:46:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2024-12-02 07:46:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1653. [2024-12-02 07:46:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1392 states have (on average 1.2464080459770115) internal successors, (1735), 1410 states have internal predecessors, (1735), 232 states have call successors, (232), 28 states have call predecessors, (232), 28 states have return successors, (232), 214 states have call predecessors, (232), 232 states have call successors, (232) [2024-12-02 07:46:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2199 transitions. [2024-12-02 07:46:54,424 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2199 transitions. Word has length 142 [2024-12-02 07:46:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:54,424 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2199 transitions. [2024-12-02 07:46:54,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:46:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2199 transitions. [2024-12-02 07:46:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:46:54,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:54,426 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:54,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:46:54,426 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:54,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2031090635, now seen corresponding path program 1 times [2024-12-02 07:46:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684422529] [2024-12-02 07:46:54,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684422529] [2024-12-02 07:46:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684422529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:55,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:46:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990701579] [2024-12-02 07:46:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:55,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:46:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:55,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:46:55,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:46:55,437 INFO L87 Difference]: Start difference. First operand 1653 states and 2199 transitions. Second operand has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:46:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:57,070 INFO L93 Difference]: Finished difference Result 3448 states and 4565 transitions. [2024-12-02 07:46:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 07:46:57,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2024-12-02 07:46:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:57,078 INFO L225 Difference]: With dead ends: 3448 [2024-12-02 07:46:57,078 INFO L226 Difference]: Without dead ends: 1831 [2024-12-02 07:46:57,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2024-12-02 07:46:57,081 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 334 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:57,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1345 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:46:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-12-02 07:46:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1721. [2024-12-02 07:46:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1437 states have (on average 1.2407794015309672) internal successors, (1783), 1456 states have internal predecessors, (1783), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:46:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2283 transitions. [2024-12-02 07:46:57,241 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2283 transitions. Word has length 143 [2024-12-02 07:46:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:57,241 INFO L471 AbstractCegarLoop]: Abstraction has 1721 states and 2283 transitions. [2024-12-02 07:46:57,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:46:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2283 transitions. [2024-12-02 07:46:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:46:57,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:57,242 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:46:57,243 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:57,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1120267628, now seen corresponding path program 1 times [2024-12-02 07:46:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926427742] [2024-12-02 07:46:57,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926427742] [2024-12-02 07:46:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926427742] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:57,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:57,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:46:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844071706] [2024-12-02 07:46:57,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:57,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:46:57,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:57,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:46:57,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:46:57,362 INFO L87 Difference]: Start difference. First operand 1721 states and 2283 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:57,566 INFO L93 Difference]: Finished difference Result 3733 states and 4943 transitions. [2024-12-02 07:46:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:46:57,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2024-12-02 07:46:57,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:57,573 INFO L225 Difference]: With dead ends: 3733 [2024-12-02 07:46:57,573 INFO L226 Difference]: Without dead ends: 2048 [2024-12-02 07:46:57,575 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 07:46:57,575 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 46 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:57,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 614 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:46:57,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2024-12-02 07:46:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1821. [2024-12-02 07:46:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1537 states have (on average 1.2394274560832792) internal successors, (1905), 1556 states have internal predecessors, (1905), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:46:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2405 transitions. [2024-12-02 07:46:57,721 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2405 transitions. Word has length 143 [2024-12-02 07:46:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:57,721 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2405 transitions. [2024-12-02 07:46:57,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2405 transitions. [2024-12-02 07:46:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:46:57,723 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:57,723 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:57,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:46:57,723 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:57,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1267978055, now seen corresponding path program 1 times [2024-12-02 07:46:57,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:57,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799932634] [2024-12-02 07:46:57,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:57,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:57,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:57,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799932634] [2024-12-02 07:46:57,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799932634] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:57,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:46:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103519669] [2024-12-02 07:46:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:57,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:46:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:57,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:46:57,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:46:57,870 INFO L87 Difference]: Start difference. First operand 1821 states and 2405 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:46:58,112 INFO L93 Difference]: Finished difference Result 3833 states and 5051 transitions. [2024-12-02 07:46:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:46:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2024-12-02 07:46:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:46:58,118 INFO L225 Difference]: With dead ends: 3833 [2024-12-02 07:46:58,118 INFO L226 Difference]: Without dead ends: 2048 [2024-12-02 07:46:58,120 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 07:46:58,121 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 53 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:46:58,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 611 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:46:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2024-12-02 07:46:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1821. [2024-12-02 07:46:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1537 states have (on average 1.2342225113858165) internal successors, (1897), 1556 states have internal predecessors, (1897), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:46:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2397 transitions. [2024-12-02 07:46:58,274 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2397 transitions. Word has length 143 [2024-12-02 07:46:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:46:58,274 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2397 transitions. [2024-12-02 07:46:58,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:46:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2397 transitions. [2024-12-02 07:46:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:46:58,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:58,275 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:58,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:46:58,275 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:58,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1438641339, now seen corresponding path program 1 times [2024-12-02 07:46:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207235088] [2024-12-02 07:46:58,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:58,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:46:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:46:59,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:46:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207235088] [2024-12-02 07:46:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207235088] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:46:59,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:46:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 07:46:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234576006] [2024-12-02 07:46:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:46:59,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:46:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:46:59,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:46:59,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:46:59,941 INFO L87 Difference]: Start difference. First operand 1821 states and 2397 transitions. Second operand has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:47:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:06,128 INFO L93 Difference]: Finished difference Result 3774 states and 4953 transitions. [2024-12-02 07:47:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 07:47:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 143 [2024-12-02 07:47:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:06,136 INFO L225 Difference]: With dead ends: 3774 [2024-12-02 07:47:06,136 INFO L226 Difference]: Without dead ends: 1989 [2024-12-02 07:47:06,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:47:06,140 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 238 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:06,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2058 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 07:47:06,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-12-02 07:47:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1833. [2024-12-02 07:47:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1549 states have (on average 1.2330535829567464) internal successors, (1910), 1568 states have internal predecessors, (1910), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:47:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2410 transitions. [2024-12-02 07:47:06,323 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2410 transitions. Word has length 143 [2024-12-02 07:47:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:06,323 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2410 transitions. [2024-12-02 07:47:06,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 4.0) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:47:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2410 transitions. [2024-12-02 07:47:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:47:06,326 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:06,326 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:06,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:47:06,326 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:06,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -956151861, now seen corresponding path program 1 times [2024-12-02 07:47:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511111212] [2024-12-02 07:47:06,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511111212] [2024-12-02 07:47:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511111212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:47:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090085038] [2024-12-02 07:47:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:07,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:47:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:07,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:47:07,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:47:07,142 INFO L87 Difference]: Start difference. First operand 1833 states and 2410 transitions. Second operand has 13 states, 10 states have (on average 5.6) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:47:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:08,090 INFO L93 Difference]: Finished difference Result 3614 states and 4753 transitions. [2024-12-02 07:47:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 07:47:08,091 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.6) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 143 [2024-12-02 07:47:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:08,099 INFO L225 Difference]: With dead ends: 3614 [2024-12-02 07:47:08,099 INFO L226 Difference]: Without dead ends: 1817 [2024-12-02 07:47:08,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:47:08,103 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 90 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:08,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1262 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:47:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2024-12-02 07:47:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1787. [2024-12-02 07:47:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1503 states have (on average 1.2322022621423818) internal successors, (1852), 1522 states have internal predecessors, (1852), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:47:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2352 transitions. [2024-12-02 07:47:08,262 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2352 transitions. Word has length 143 [2024-12-02 07:47:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:08,262 INFO L471 AbstractCegarLoop]: Abstraction has 1787 states and 2352 transitions. [2024-12-02 07:47:08,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.6) internal successors, (56), 13 states have internal predecessors, (56), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:47:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2352 transitions. [2024-12-02 07:47:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:47:08,263 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:08,263 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:08,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 07:47:08,263 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:08,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1427935694, now seen corresponding path program 1 times [2024-12-02 07:47:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925612450] [2024-12-02 07:47:08,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 07:47:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925612450] [2024-12-02 07:47:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925612450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:47:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264376864] [2024-12-02 07:47:08,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:08,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:08,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:47:08,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:47:08,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:47:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:08,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:47:08,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:47:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:08,581 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:47:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264376864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:08,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:47:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2024-12-02 07:47:08,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565794279] [2024-12-02 07:47:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:08,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:47:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:08,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:47:08,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:47:08,582 INFO L87 Difference]: Start difference. First operand 1787 states and 2352 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:08,793 INFO L93 Difference]: Finished difference Result 3678 states and 4820 transitions. [2024-12-02 07:47:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:47:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2024-12-02 07:47:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:08,802 INFO L225 Difference]: With dead ends: 3678 [2024-12-02 07:47:08,802 INFO L226 Difference]: Without dead ends: 1927 [2024-12-02 07:47:08,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:47:08,806 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:08,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:47:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2024-12-02 07:47:08,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1821. [2024-12-02 07:47:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1537 states have (on average 1.2270657124268054) internal successors, (1886), 1556 states have internal predecessors, (1886), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:47:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2386 transitions. [2024-12-02 07:47:08,994 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2386 transitions. Word has length 144 [2024-12-02 07:47:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:08,995 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2386 transitions. [2024-12-02 07:47:08,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2386 transitions. [2024-12-02 07:47:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:47:08,996 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:08,996 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:09,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:47:09,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:47:09,196 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:09,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:09,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1820962704, now seen corresponding path program 1 times [2024-12-02 07:47:09,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:09,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154005940] [2024-12-02 07:47:09,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:09,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:09,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:09,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154005940] [2024-12-02 07:47:09,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154005940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:09,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:09,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:47:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164204395] [2024-12-02 07:47:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:09,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:47:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:09,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:47:09,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:47:09,329 INFO L87 Difference]: Start difference. First operand 1821 states and 2386 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:09,536 INFO L93 Difference]: Finished difference Result 3069 states and 4042 transitions. [2024-12-02 07:47:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:47:09,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2024-12-02 07:47:09,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:09,543 INFO L225 Difference]: With dead ends: 3069 [2024-12-02 07:47:09,543 INFO L226 Difference]: Without dead ends: 1848 [2024-12-02 07:47:09,546 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 07:47:09,546 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 40 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:09,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 614 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:47:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2024-12-02 07:47:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1777. [2024-12-02 07:47:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1493 states have (on average 1.2203616878767582) internal successors, (1822), 1512 states have internal predecessors, (1822), 250 states have call successors, (250), 33 states have call predecessors, (250), 33 states have return successors, (250), 231 states have call predecessors, (250), 250 states have call successors, (250) [2024-12-02 07:47:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2322 transitions. [2024-12-02 07:47:09,727 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2322 transitions. Word has length 144 [2024-12-02 07:47:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:09,727 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2322 transitions. [2024-12-02 07:47:09,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2322 transitions. [2024-12-02 07:47:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:47:09,728 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:09,728 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:09,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 07:47:09,728 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:09,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash -111199497, now seen corresponding path program 1 times [2024-12-02 07:47:09,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629221048] [2024-12-02 07:47:09,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:10,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629221048] [2024-12-02 07:47:10,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629221048] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:10,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:47:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628314471] [2024-12-02 07:47:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:10,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:47:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:10,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:47:10,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:47:10,798 INFO L87 Difference]: Start difference. First operand 1777 states and 2322 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:18,860 WARN L286 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 74 DAG size of output: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 07:47:28,605 WARN L286 SmtUtils]: Spent 9.23s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 07:47:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:30,406 INFO L93 Difference]: Finished difference Result 3990 states and 5196 transitions. [2024-12-02 07:47:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:47:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2024-12-02 07:47:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:30,411 INFO L225 Difference]: With dead ends: 3990 [2024-12-02 07:47:30,411 INFO L226 Difference]: Without dead ends: 2249 [2024-12-02 07:47:30,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:47:30,414 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 245 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:30,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1309 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 07:47:30,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2024-12-02 07:47:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1703. [2024-12-02 07:47:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1435 states have (on average 1.2139372822299652) internal successors, (1742), 1452 states have internal predecessors, (1742), 234 states have call successors, (234), 33 states have call predecessors, (234), 33 states have return successors, (234), 217 states have call predecessors, (234), 234 states have call successors, (234) [2024-12-02 07:47:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2210 transitions. [2024-12-02 07:47:30,600 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2210 transitions. Word has length 144 [2024-12-02 07:47:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:30,600 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 2210 transitions. [2024-12-02 07:47:30,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2210 transitions. [2024-12-02 07:47:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:47:30,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:30,601 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:30,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 07:47:30,601 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:30,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 771515590, now seen corresponding path program 1 times [2024-12-02 07:47:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393159595] [2024-12-02 07:47:30,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:30,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:30,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393159595] [2024-12-02 07:47:30,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393159595] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:30,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:30,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:47:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128216446] [2024-12-02 07:47:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:30,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:47:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:30,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:47:30,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:47:30,853 INFO L87 Difference]: Start difference. First operand 1703 states and 2210 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:31,531 INFO L93 Difference]: Finished difference Result 3382 states and 4379 transitions. [2024-12-02 07:47:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:47:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 145 [2024-12-02 07:47:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:31,535 INFO L225 Difference]: With dead ends: 3382 [2024-12-02 07:47:31,535 INFO L226 Difference]: Without dead ends: 1715 [2024-12-02 07:47:31,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:47:31,537 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 161 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:31,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 642 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:47:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-12-02 07:47:31,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1624. [2024-12-02 07:47:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1381 states have (on average 1.2157856625633598) internal successors, (1679), 1397 states have internal predecessors, (1679), 214 states have call successors, (214), 28 states have call predecessors, (214), 28 states have return successors, (214), 198 states have call predecessors, (214), 214 states have call successors, (214) [2024-12-02 07:47:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2107 transitions. [2024-12-02 07:47:31,686 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2107 transitions. Word has length 145 [2024-12-02 07:47:31,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:31,686 INFO L471 AbstractCegarLoop]: Abstraction has 1624 states and 2107 transitions. [2024-12-02 07:47:31,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:47:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2107 transitions. [2024-12-02 07:47:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:47:31,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:31,687 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:31,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 07:47:31,687 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:31,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 758231866, now seen corresponding path program 1 times [2024-12-02 07:47:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304802357] [2024-12-02 07:47:31,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:31,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:31,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304802357] [2024-12-02 07:47:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304802357] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:31,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:31,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:47:31,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352381111] [2024-12-02 07:47:31,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:31,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:47:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:31,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:47:31,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:47:31,993 INFO L87 Difference]: Start difference. First operand 1624 states and 2107 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:32,492 INFO L93 Difference]: Finished difference Result 3266 states and 4245 transitions. [2024-12-02 07:47:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:47:32,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2024-12-02 07:47:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:32,498 INFO L225 Difference]: With dead ends: 3266 [2024-12-02 07:47:32,498 INFO L226 Difference]: Without dead ends: 2199 [2024-12-02 07:47:32,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:47:32,499 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 74 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:32,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1356 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:47:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2024-12-02 07:47:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 1756. [2024-12-02 07:47:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1518 states have (on average 1.225296442687747) internal successors, (1860), 1533 states have internal predecessors, (1860), 208 states have call successors, (208), 29 states have call predecessors, (208), 29 states have return successors, (208), 193 states have call predecessors, (208), 208 states have call successors, (208) [2024-12-02 07:47:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2276 transitions. [2024-12-02 07:47:32,648 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2276 transitions. Word has length 145 [2024-12-02 07:47:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:32,648 INFO L471 AbstractCegarLoop]: Abstraction has 1756 states and 2276 transitions. [2024-12-02 07:47:32,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2276 transitions. [2024-12-02 07:47:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:47:32,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:32,649 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:32,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 07:47:32,649 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1047206468, now seen corresponding path program 1 times [2024-12-02 07:47:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724911711] [2024-12-02 07:47:32,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:32,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724911711] [2024-12-02 07:47:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724911711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:32,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:47:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257871408] [2024-12-02 07:47:32,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:32,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:47:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:32,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:47:32,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:47:32,822 INFO L87 Difference]: Start difference. First operand 1756 states and 2276 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:33,127 INFO L93 Difference]: Finished difference Result 3765 states and 4856 transitions. [2024-12-02 07:47:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:47:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2024-12-02 07:47:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:33,131 INFO L225 Difference]: With dead ends: 3765 [2024-12-02 07:47:33,131 INFO L226 Difference]: Without dead ends: 2045 [2024-12-02 07:47:33,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:47:33,133 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 50 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:33,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 719 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:47:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2024-12-02 07:47:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2033. [2024-12-02 07:47:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1764 states have (on average 1.2171201814058956) internal successors, (2147), 1789 states have internal predecessors, (2147), 228 states have call successors, (228), 40 states have call predecessors, (228), 40 states have return successors, (228), 203 states have call predecessors, (228), 228 states have call successors, (228) [2024-12-02 07:47:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2603 transitions. [2024-12-02 07:47:33,321 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2603 transitions. Word has length 145 [2024-12-02 07:47:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:33,321 INFO L471 AbstractCegarLoop]: Abstraction has 2033 states and 2603 transitions. [2024-12-02 07:47:33,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:47:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2603 transitions. [2024-12-02 07:47:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:47:33,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:33,322 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:33,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 07:47:33,322 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:33,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash -118147956, now seen corresponding path program 1 times [2024-12-02 07:47:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:33,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868545214] [2024-12-02 07:47:33,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:33,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:33,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868545214] [2024-12-02 07:47:33,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868545214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:33,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:33,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:47:33,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498753942] [2024-12-02 07:47:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:33,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:47:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:33,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:47:33,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:47:33,860 INFO L87 Difference]: Start difference. First operand 2033 states and 2603 transitions. Second operand has 7 states, 5 states have (on average 11.6) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:47:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:34,518 INFO L93 Difference]: Finished difference Result 4281 states and 5486 transitions. [2024-12-02 07:47:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:47:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-12-02 07:47:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:34,523 INFO L225 Difference]: With dead ends: 4281 [2024-12-02 07:47:34,523 INFO L226 Difference]: Without dead ends: 2288 [2024-12-02 07:47:34,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:47:34,525 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 65 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:47:34,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 496 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:47:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2024-12-02 07:47:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1992. [2024-12-02 07:47:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1706 states have (on average 1.205158264947245) internal successors, (2056), 1729 states have internal predecessors, (2056), 242 states have call successors, (242), 43 states have call predecessors, (242), 43 states have return successors, (242), 219 states have call predecessors, (242), 242 states have call successors, (242) [2024-12-02 07:47:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2540 transitions. [2024-12-02 07:47:34,769 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2540 transitions. Word has length 145 [2024-12-02 07:47:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:34,770 INFO L471 AbstractCegarLoop]: Abstraction has 1992 states and 2540 transitions. [2024-12-02 07:47:34,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:47:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2540 transitions. [2024-12-02 07:47:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:47:34,770 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:34,770 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:34,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 07:47:34,771 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:34,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1584624932, now seen corresponding path program 1 times [2024-12-02 07:47:34,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:34,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264561013] [2024-12-02 07:47:34,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:34,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:47:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264561013] [2024-12-02 07:47:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264561013] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:46,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:46,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-12-02 07:47:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619771294] [2024-12-02 07:47:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:46,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 07:47:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:46,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 07:47:46,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=501, Unknown=1, NotChecked=0, Total=552 [2024-12-02 07:47:46,374 INFO L87 Difference]: Start difference. First operand 1992 states and 2540 transitions. Second operand has 24 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 07:48:00,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:48:07,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:48:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:12,936 INFO L93 Difference]: Finished difference Result 3446 states and 4411 transitions. [2024-12-02 07:48:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 07:48:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 6 states have call successors, (18) Word has length 146 [2024-12-02 07:48:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:12,941 INFO L225 Difference]: With dead ends: 3446 [2024-12-02 07:48:12,941 INFO L226 Difference]: Without dead ends: 2144 [2024-12-02 07:48:12,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=145, Invalid=1260, Unknown=1, NotChecked=0, Total=1406 [2024-12-02 07:48:12,943 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 310 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:12,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2522 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2625 Invalid, 1 Unknown, 0 Unchecked, 21.2s Time] [2024-12-02 07:48:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2024-12-02 07:48:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1972. [2024-12-02 07:48:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1701 states have (on average 1.2063492063492063) internal successors, (2052), 1723 states have internal predecessors, (2052), 230 states have call successors, (230), 40 states have call predecessors, (230), 40 states have return successors, (230), 208 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 07:48:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2512 transitions. [2024-12-02 07:48:13,195 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2512 transitions. Word has length 146 [2024-12-02 07:48:13,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:13,195 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2512 transitions. [2024-12-02 07:48:13,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 24 states have internal predecessors, (59), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 07:48:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2512 transitions. [2024-12-02 07:48:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:48:13,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:13,197 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:13,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 07:48:13,197 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:13,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1026702444, now seen corresponding path program 1 times [2024-12-02 07:48:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21096874] [2024-12-02 07:48:13,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:14,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:14,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21096874] [2024-12-02 07:48:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21096874] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:14,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 07:48:14,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40233862] [2024-12-02 07:48:14,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:14,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 07:48:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:14,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 07:48:14,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:48:14,906 INFO L87 Difference]: Start difference. First operand 1972 states and 2512 transitions. Second operand has 21 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:48:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:18,471 INFO L93 Difference]: Finished difference Result 2336 states and 2934 transitions. [2024-12-02 07:48:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 07:48:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 147 [2024-12-02 07:48:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:18,476 INFO L225 Difference]: With dead ends: 2336 [2024-12-02 07:48:18,476 INFO L226 Difference]: Without dead ends: 2334 [2024-12-02 07:48:18,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=309, Invalid=2771, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 07:48:18,477 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 336 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:18,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1744 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:48:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2024-12-02 07:48:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2096. [2024-12-02 07:48:18,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1820 states have (on average 1.195054945054945) internal successors, (2175), 1843 states have internal predecessors, (2175), 234 states have call successors, (234), 41 states have call predecessors, (234), 41 states have return successors, (234), 211 states have call predecessors, (234), 234 states have call successors, (234) [2024-12-02 07:48:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2643 transitions. [2024-12-02 07:48:18,763 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2643 transitions. Word has length 147 [2024-12-02 07:48:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:18,763 INFO L471 AbstractCegarLoop]: Abstraction has 2096 states and 2643 transitions. [2024-12-02 07:48:18,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 21 states have internal predecessors, (60), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:48:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2643 transitions. [2024-12-02 07:48:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:48:18,764 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:18,764 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:18,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 07:48:18,765 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:18,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2084066237, now seen corresponding path program 1 times [2024-12-02 07:48:18,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:18,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333721567] [2024-12-02 07:48:18,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:19,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333721567] [2024-12-02 07:48:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333721567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:19,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:19,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:48:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824331419] [2024-12-02 07:48:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:19,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:48:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:19,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:48:19,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:48:19,704 INFO L87 Difference]: Start difference. First operand 2096 states and 2643 transitions. Second operand has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:21,600 INFO L93 Difference]: Finished difference Result 4607 states and 5792 transitions. [2024-12-02 07:48:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:48:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2024-12-02 07:48:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:21,606 INFO L225 Difference]: With dead ends: 4607 [2024-12-02 07:48:21,606 INFO L226 Difference]: Without dead ends: 2514 [2024-12-02 07:48:21,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:48:21,609 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 332 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:21,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 871 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 07:48:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2024-12-02 07:48:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2137. [2024-12-02 07:48:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1861 states have (on average 1.1929070392262224) internal successors, (2220), 1884 states have internal predecessors, (2220), 234 states have call successors, (234), 41 states have call predecessors, (234), 41 states have return successors, (234), 211 states have call predecessors, (234), 234 states have call successors, (234) [2024-12-02 07:48:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2688 transitions. [2024-12-02 07:48:21,879 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2688 transitions. Word has length 147 [2024-12-02 07:48:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:21,880 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 2688 transitions. [2024-12-02 07:48:21,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.454545454545454) internal successors, (60), 13 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2688 transitions. [2024-12-02 07:48:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:48:21,881 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:21,881 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:21,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 07:48:21,881 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:21,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1462826518, now seen corresponding path program 1 times [2024-12-02 07:48:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017824420] [2024-12-02 07:48:21,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:21,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017824420] [2024-12-02 07:48:21,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017824420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:21,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:21,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:48:21,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727755468] [2024-12-02 07:48:21,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:21,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:48:21,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:21,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:48:21,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:21,991 INFO L87 Difference]: Start difference. First operand 2137 states and 2688 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:22,343 INFO L93 Difference]: Finished difference Result 4980 states and 6227 transitions. [2024-12-02 07:48:22,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:48:22,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 147 [2024-12-02 07:48:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:22,351 INFO L225 Difference]: With dead ends: 4980 [2024-12-02 07:48:22,351 INFO L226 Difference]: Without dead ends: 2846 [2024-12-02 07:48:22,354 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 07:48:22,355 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 32 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:22,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 596 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2024-12-02 07:48:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2579. [2024-12-02 07:48:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2303 states have (on average 1.1980026052974382) internal successors, (2759), 2326 states have internal predecessors, (2759), 234 states have call successors, (234), 41 states have call predecessors, (234), 41 states have return successors, (234), 211 states have call predecessors, (234), 234 states have call successors, (234) [2024-12-02 07:48:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3227 transitions. [2024-12-02 07:48:22,775 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3227 transitions. Word has length 147 [2024-12-02 07:48:22,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:22,775 INFO L471 AbstractCegarLoop]: Abstraction has 2579 states and 3227 transitions. [2024-12-02 07:48:22,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3227 transitions. [2024-12-02 07:48:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:48:22,776 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:22,776 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:22,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 07:48:22,776 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:22,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash -185431528, now seen corresponding path program 1 times [2024-12-02 07:48:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487292384] [2024-12-02 07:48:22,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:22,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487292384] [2024-12-02 07:48:23,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487292384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:23,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:23,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:48:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690265921] [2024-12-02 07:48:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:23,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:48:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:23,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:48:23,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:23,267 INFO L87 Difference]: Start difference. First operand 2579 states and 3227 transitions. Second operand has 7 states, 5 states have (on average 12.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:24,045 INFO L93 Difference]: Finished difference Result 5536 states and 6926 transitions. [2024-12-02 07:48:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:48:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2024-12-02 07:48:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:24,053 INFO L225 Difference]: With dead ends: 5536 [2024-12-02 07:48:24,053 INFO L226 Difference]: Without dead ends: 2960 [2024-12-02 07:48:24,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:48:24,057 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 80 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:24,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 598 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2024-12-02 07:48:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2605. [2024-12-02 07:48:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2284 states have (on average 1.1786339754816113) internal successors, (2692), 2310 states have internal predecessors, (2692), 270 states have call successors, (270), 50 states have call predecessors, (270), 50 states have return successors, (270), 244 states have call predecessors, (270), 270 states have call successors, (270) [2024-12-02 07:48:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3232 transitions. [2024-12-02 07:48:24,557 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3232 transitions. Word has length 147 [2024-12-02 07:48:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:24,557 INFO L471 AbstractCegarLoop]: Abstraction has 2605 states and 3232 transitions. [2024-12-02 07:48:24,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3232 transitions. [2024-12-02 07:48:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:48:24,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:24,558 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:24,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 07:48:24,558 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:24,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash -364949336, now seen corresponding path program 1 times [2024-12-02 07:48:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801010838] [2024-12-02 07:48:24,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801010838] [2024-12-02 07:48:24,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801010838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:24,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:48:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468681440] [2024-12-02 07:48:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:24,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:48:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:24,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:48:24,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:48:24,938 INFO L87 Difference]: Start difference. First operand 2605 states and 3232 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:26,008 INFO L93 Difference]: Finished difference Result 5767 states and 7157 transitions. [2024-12-02 07:48:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:48:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2024-12-02 07:48:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:26,014 INFO L225 Difference]: With dead ends: 5767 [2024-12-02 07:48:26,014 INFO L226 Difference]: Without dead ends: 3165 [2024-12-02 07:48:26,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:48:26,017 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 61 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:26,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 815 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2024-12-02 07:48:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 2892. [2024-12-02 07:48:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2514 states have (on average 1.1670644391408114) internal successors, (2934), 2546 states have internal predecessors, (2934), 318 states have call successors, (318), 59 states have call predecessors, (318), 59 states have return successors, (318), 286 states have call predecessors, (318), 318 states have call successors, (318) [2024-12-02 07:48:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3570 transitions. [2024-12-02 07:48:26,420 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3570 transitions. Word has length 148 [2024-12-02 07:48:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:26,420 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 3570 transitions. [2024-12-02 07:48:26,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3570 transitions. [2024-12-02 07:48:26,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:48:26,421 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:26,421 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:26,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 07:48:26,422 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:26,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1549147951, now seen corresponding path program 1 times [2024-12-02 07:48:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:26,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57525321] [2024-12-02 07:48:26,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-12-02 07:48:26,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57525321] [2024-12-02 07:48:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57525321] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:48:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910111687] [2024-12-02 07:48:26,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:26,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:26,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:26,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:26,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:48:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:26,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 07:48:26,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:26,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-02 07:48:27,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 07:48:27,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 07:48:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 272 proven. 36 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-12-02 07:48:27,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:27,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-12-02 07:48:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 60 proven. 39 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-12-02 07:48:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910111687] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:27,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:48:27,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 12] total 23 [2024-12-02 07:48:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423187455] [2024-12-02 07:48:27,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:27,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 07:48:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:27,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 07:48:27,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:48:27,670 INFO L87 Difference]: Start difference. First operand 2892 states and 3570 transitions. Second operand has 23 states, 18 states have (on average 6.555555555555555) internal successors, (118), 23 states have internal predecessors, (118), 9 states have call successors, (46), 2 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 9 states have call successors, (46) [2024-12-02 07:48:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:28,824 INFO L93 Difference]: Finished difference Result 6135 states and 7437 transitions. [2024-12-02 07:48:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 07:48:28,825 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 6.555555555555555) internal successors, (118), 23 states have internal predecessors, (118), 9 states have call successors, (46), 2 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 9 states have call successors, (46) Word has length 148 [2024-12-02 07:48:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:28,830 INFO L225 Difference]: With dead ends: 6135 [2024-12-02 07:48:28,831 INFO L226 Difference]: Without dead ends: 3246 [2024-12-02 07:48:28,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-12-02 07:48:28,834 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 391 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:28,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 600 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-12-02 07:48:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3052. [2024-12-02 07:48:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 2639 states have (on average 1.1500568397120121) internal successors, (3035), 2670 states have internal predecessors, (3035), 304 states have call successors, (304), 108 states have call predecessors, (304), 108 states have return successors, (304), 273 states have call predecessors, (304), 304 states have call successors, (304) [2024-12-02 07:48:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 3643 transitions. [2024-12-02 07:48:29,296 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 3643 transitions. Word has length 148 [2024-12-02 07:48:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:29,296 INFO L471 AbstractCegarLoop]: Abstraction has 3052 states and 3643 transitions. [2024-12-02 07:48:29,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 6.555555555555555) internal successors, (118), 23 states have internal predecessors, (118), 9 states have call successors, (46), 2 states have call predecessors, (46), 6 states have return successors, (46), 6 states have call predecessors, (46), 9 states have call successors, (46) [2024-12-02 07:48:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 3643 transitions. [2024-12-02 07:48:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:48:29,298 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:29,298 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:29,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 07:48:29,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71a63af-c817-4e2c-a2d3-3b9f787a9751/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 07:48:29,499 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:29,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1683161457, now seen corresponding path program 1 times [2024-12-02 07:48:29,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:29,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134093099] [2024-12-02 07:48:29,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:30,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134093099] [2024-12-02 07:48:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134093099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:30,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:48:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263096878] [2024-12-02 07:48:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:30,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:48:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:30,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:48:30,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:48:30,652 INFO L87 Difference]: Start difference. First operand 3052 states and 3643 transitions. Second operand has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:32,939 INFO L93 Difference]: Finished difference Result 6489 states and 7732 transitions. [2024-12-02 07:48:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:48:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2024-12-02 07:48:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:32,947 INFO L225 Difference]: With dead ends: 6489 [2024-12-02 07:48:32,947 INFO L226 Difference]: Without dead ends: 3440 [2024-12-02 07:48:32,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:48:32,950 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 249 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:32,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 972 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:48:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2024-12-02 07:48:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3066. [2024-12-02 07:48:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 2653 states have (on average 1.1492649830380701) internal successors, (3049), 2684 states have internal predecessors, (3049), 304 states have call successors, (304), 108 states have call predecessors, (304), 108 states have return successors, (304), 273 states have call predecessors, (304), 304 states have call successors, (304) [2024-12-02 07:48:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 3657 transitions. [2024-12-02 07:48:33,427 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 3657 transitions. Word has length 148 [2024-12-02 07:48:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:33,427 INFO L471 AbstractCegarLoop]: Abstraction has 3066 states and 3657 transitions. [2024-12-02 07:48:33,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 15 states have internal predecessors, (61), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:48:33,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 3657 transitions. [2024-12-02 07:48:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:48:33,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:33,428 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:33,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 07:48:33,428 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:33,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1802459213, now seen corresponding path program 1 times [2024-12-02 07:48:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665705896] [2024-12-02 07:48:33,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:33,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:33,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665705896] [2024-12-02 07:48:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665705896] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:33,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:48:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020429846] [2024-12-02 07:48:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:33,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:48:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:33,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:48:33,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:48:33,737 INFO L87 Difference]: Start difference. First operand 3066 states and 3657 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:34,613 INFO L93 Difference]: Finished difference Result 4455 states and 5331 transitions. [2024-12-02 07:48:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:48:34,613 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2024-12-02 07:48:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:34,621 INFO L225 Difference]: With dead ends: 4455 [2024-12-02 07:48:34,621 INFO L226 Difference]: Without dead ends: 4453 [2024-12-02 07:48:34,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:48:34,623 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 116 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:34,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2200 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2024-12-02 07:48:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4333. [2024-12-02 07:48:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4333 states, 3726 states have (on average 1.152710681696189) internal successors, (4295), 3768 states have internal predecessors, (4295), 448 states have call successors, (448), 158 states have call predecessors, (448), 158 states have return successors, (448), 406 states have call predecessors, (448), 448 states have call successors, (448) [2024-12-02 07:48:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 5191 transitions. [2024-12-02 07:48:35,357 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 5191 transitions. Word has length 148 [2024-12-02 07:48:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:35,358 INFO L471 AbstractCegarLoop]: Abstraction has 4333 states and 5191 transitions. [2024-12-02 07:48:35,358 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:35,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 5191 transitions. [2024-12-02 07:48:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 07:48:35,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:35,359 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:35,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 07:48:35,359 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:35,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 959650263, now seen corresponding path program 1 times [2024-12-02 07:48:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569807505] [2024-12-02 07:48:35,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569807505] [2024-12-02 07:48:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569807505] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:35,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:48:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419995731] [2024-12-02 07:48:35,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:35,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:48:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:35,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:48:35,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:48:35,881 INFO L87 Difference]: Start difference. First operand 4333 states and 5191 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:38,065 INFO L93 Difference]: Finished difference Result 7787 states and 9367 transitions. [2024-12-02 07:48:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:48:38,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2024-12-02 07:48:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:38,072 INFO L225 Difference]: With dead ends: 7787 [2024-12-02 07:48:38,072 INFO L226 Difference]: Without dead ends: 4958 [2024-12-02 07:48:38,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:48:38,075 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 201 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:38,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 878 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:48:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2024-12-02 07:48:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4499. [2024-12-02 07:48:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 3836 states have (on average 1.1475495307612096) internal successors, (4402), 3881 states have internal predecessors, (4402), 488 states have call successors, (488), 174 states have call predecessors, (488), 174 states have return successors, (488), 443 states have call predecessors, (488), 488 states have call successors, (488) [2024-12-02 07:48:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5378 transitions. [2024-12-02 07:48:38,905 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5378 transitions. Word has length 148 [2024-12-02 07:48:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:38,906 INFO L471 AbstractCegarLoop]: Abstraction has 4499 states and 5378 transitions. [2024-12-02 07:48:38,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5378 transitions. [2024-12-02 07:48:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:48:38,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:38,907 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:38,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 07:48:38,907 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:38,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 760898085, now seen corresponding path program 1 times [2024-12-02 07:48:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288612447] [2024-12-02 07:48:38,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288612447] [2024-12-02 07:48:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288612447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:39,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:39,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:48:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792679280] [2024-12-02 07:48:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:39,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:48:39,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:39,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:48:39,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:48:39,985 INFO L87 Difference]: Start difference. First operand 4499 states and 5378 transitions. Second operand has 15 states, 12 states have (on average 5.25) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:48:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:43,228 INFO L93 Difference]: Finished difference Result 5596 states and 6623 transitions. [2024-12-02 07:48:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 07:48:43,229 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.25) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) Word has length 150 [2024-12-02 07:48:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:43,235 INFO L225 Difference]: With dead ends: 5596 [2024-12-02 07:48:43,235 INFO L226 Difference]: Without dead ends: 5594 [2024-12-02 07:48:43,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:48:43,236 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 154 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:43,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 2147 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:48:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2024-12-02 07:48:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 4519. [2024-12-02 07:48:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 3844 states have (on average 1.147242455775234) internal successors, (4410), 3888 states have internal predecessors, (4410), 494 states have call successors, (494), 180 states have call predecessors, (494), 180 states have return successors, (494), 450 states have call predecessors, (494), 494 states have call successors, (494) [2024-12-02 07:48:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5398 transitions. [2024-12-02 07:48:44,142 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5398 transitions. Word has length 150 [2024-12-02 07:48:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:44,142 INFO L471 AbstractCegarLoop]: Abstraction has 4519 states and 5398 transitions. [2024-12-02 07:48:44,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.25) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 07:48:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5398 transitions. [2024-12-02 07:48:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:48:44,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:44,144 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:44,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 07:48:44,144 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:44,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -423300530, now seen corresponding path program 1 times [2024-12-02 07:48:44,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419343579] [2024-12-02 07:48:44,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:44,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:44,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419343579] [2024-12-02 07:48:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419343579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:44,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 07:48:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080566045] [2024-12-02 07:48:44,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:44,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:48:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:44,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:48:44,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:48:44,642 INFO L87 Difference]: Start difference. First operand 4519 states and 5398 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:46,614 INFO L93 Difference]: Finished difference Result 9333 states and 11121 transitions. [2024-12-02 07:48:46,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:48:46,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2024-12-02 07:48:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:46,621 INFO L225 Difference]: With dead ends: 9333 [2024-12-02 07:48:46,621 INFO L226 Difference]: Without dead ends: 4817 [2024-12-02 07:48:46,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:48:46,624 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 204 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:46,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 751 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:48:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2024-12-02 07:48:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4302. [2024-12-02 07:48:47,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 3679 states have (on average 1.1470508290296275) internal successors, (4220), 3721 states have internal predecessors, (4220), 456 states have call successors, (456), 166 states have call predecessors, (456), 166 states have return successors, (456), 414 states have call predecessors, (456), 456 states have call successors, (456) [2024-12-02 07:48:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 5132 transitions. [2024-12-02 07:48:47,431 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 5132 transitions. Word has length 150 [2024-12-02 07:48:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:47,431 INFO L471 AbstractCegarLoop]: Abstraction has 4302 states and 5132 transitions. [2024-12-02 07:48:47,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 5132 transitions. [2024-12-02 07:48:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:48:47,432 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:47,432 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:47,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 07:48:47,432 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:47,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash -374669211, now seen corresponding path program 1 times [2024-12-02 07:48:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414099205] [2024-12-02 07:48:47,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414099205] [2024-12-02 07:48:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414099205] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:48:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997504999] [2024-12-02 07:48:47,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:47,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:48:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:47,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:48:47,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:47,565 INFO L87 Difference]: Start difference. First operand 4302 states and 5132 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:48,493 INFO L93 Difference]: Finished difference Result 7292 states and 8752 transitions. [2024-12-02 07:48:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:48:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2024-12-02 07:48:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:48,502 INFO L225 Difference]: With dead ends: 7292 [2024-12-02 07:48:48,502 INFO L226 Difference]: Without dead ends: 4444 [2024-12-02 07:48:48,505 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 07:48:48,505 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 34 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:48,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 587 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:48:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2024-12-02 07:48:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4309. [2024-12-02 07:48:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 3686 states have (on average 1.146228974498101) internal successors, (4225), 3728 states have internal predecessors, (4225), 456 states have call successors, (456), 166 states have call predecessors, (456), 166 states have return successors, (456), 414 states have call predecessors, (456), 456 states have call successors, (456) [2024-12-02 07:48:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 5137 transitions. [2024-12-02 07:48:49,425 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 5137 transitions. Word has length 151 [2024-12-02 07:48:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:49,425 INFO L471 AbstractCegarLoop]: Abstraction has 4309 states and 5137 transitions. [2024-12-02 07:48:49,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:48:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 5137 transitions. [2024-12-02 07:48:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:48:49,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:49,426 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:49,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 07:48:49,426 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:49,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1558867826, now seen corresponding path program 1 times [2024-12-02 07:48:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572152535] [2024-12-02 07:48:49,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572152535] [2024-12-02 07:48:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572152535] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:48:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821500470] [2024-12-02 07:48:49,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:49,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:48:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:49,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:48:49,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:49,621 INFO L87 Difference]: Start difference. First operand 4309 states and 5137 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:50,608 INFO L93 Difference]: Finished difference Result 7525 states and 8999 transitions. [2024-12-02 07:48:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:48:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2024-12-02 07:48:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:50,616 INFO L225 Difference]: With dead ends: 7525 [2024-12-02 07:48:50,616 INFO L226 Difference]: Without dead ends: 4520 [2024-12-02 07:48:50,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:50,619 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 46 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:50,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 767 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4520 states. [2024-12-02 07:48:51,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4520 to 4231. [2024-12-02 07:48:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4231 states, 3616 states have (on average 1.1402101769911503) internal successors, (4123), 3656 states have internal predecessors, (4123), 446 states have call successors, (446), 168 states have call predecessors, (446), 168 states have return successors, (446), 406 states have call predecessors, (446), 446 states have call successors, (446) [2024-12-02 07:48:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 5015 transitions. [2024-12-02 07:48:51,466 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 5015 transitions. Word has length 151 [2024-12-02 07:48:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:51,466 INFO L471 AbstractCegarLoop]: Abstraction has 4231 states and 5015 transitions. [2024-12-02 07:48:51,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 5015 transitions. [2024-12-02 07:48:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:48:51,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:51,468 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:51,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 07:48:51,468 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:51,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash -537799472, now seen corresponding path program 1 times [2024-12-02 07:48:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566158379] [2024-12-02 07:48:51,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:51,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:51,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566158379] [2024-12-02 07:48:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566158379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:51,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:51,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:48:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147337260] [2024-12-02 07:48:51,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:51,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:48:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:51,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:48:51,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:51,860 INFO L87 Difference]: Start difference. First operand 4231 states and 5015 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:53,306 INFO L93 Difference]: Finished difference Result 7125 states and 8483 transitions. [2024-12-02 07:48:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:48:53,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2024-12-02 07:48:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:53,313 INFO L225 Difference]: With dead ends: 7125 [2024-12-02 07:48:53,313 INFO L226 Difference]: Without dead ends: 4346 [2024-12-02 07:48:53,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:48:53,315 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 63 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:53,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 731 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:48:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2024-12-02 07:48:54,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3876. [2024-12-02 07:48:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3331 states have (on average 1.1383968778144702) internal successors, (3792), 3365 states have internal predecessors, (3792), 394 states have call successors, (394), 150 states have call predecessors, (394), 150 states have return successors, (394), 360 states have call predecessors, (394), 394 states have call successors, (394) [2024-12-02 07:48:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4580 transitions. [2024-12-02 07:48:54,051 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4580 transitions. Word has length 151 [2024-12-02 07:48:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:54,051 INFO L471 AbstractCegarLoop]: Abstraction has 3876 states and 4580 transitions. [2024-12-02 07:48:54,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4580 transitions. [2024-12-02 07:48:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:48:54,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:54,052 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:54,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 07:48:54,053 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:54,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 269720008, now seen corresponding path program 1 times [2024-12-02 07:48:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489466665] [2024-12-02 07:48:54,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:54,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489466665] [2024-12-02 07:48:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489466665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:48:54,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263291906] [2024-12-02 07:48:54,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:54,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:48:54,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:54,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:48:54,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:54,502 INFO L87 Difference]: Start difference. First operand 3876 states and 4580 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:55,737 INFO L93 Difference]: Finished difference Result 7926 states and 9356 transitions. [2024-12-02 07:48:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:48:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2024-12-02 07:48:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:55,745 INFO L225 Difference]: With dead ends: 7926 [2024-12-02 07:48:55,745 INFO L226 Difference]: Without dead ends: 4053 [2024-12-02 07:48:55,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:55,748 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 40 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:55,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 521 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:55,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2024-12-02 07:48:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 3826. [2024-12-02 07:48:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3281 states have (on average 1.1362389515391649) internal successors, (3728), 3315 states have internal predecessors, (3728), 394 states have call successors, (394), 150 states have call predecessors, (394), 150 states have return successors, (394), 360 states have call predecessors, (394), 394 states have call successors, (394) [2024-12-02 07:48:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 4516 transitions. [2024-12-02 07:48:56,493 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 4516 transitions. Word has length 151 [2024-12-02 07:48:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:56,494 INFO L471 AbstractCegarLoop]: Abstraction has 3826 states and 4516 transitions. [2024-12-02 07:48:56,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 4516 transitions. [2024-12-02 07:48:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:48:56,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:56,495 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:56,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-12-02 07:48:56,495 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:56,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1214860747, now seen corresponding path program 1 times [2024-12-02 07:48:56,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748203127] [2024-12-02 07:48:56,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:56,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:48:56,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:56,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748203127] [2024-12-02 07:48:56,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748203127] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:56,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:56,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 07:48:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814543320] [2024-12-02 07:48:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:56,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:48:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:56,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:48:56,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:48:56,956 INFO L87 Difference]: Start difference. First operand 3826 states and 4516 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:48:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:59,552 INFO L93 Difference]: Finished difference Result 9693 states and 11436 transitions. [2024-12-02 07:48:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:48:59,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2024-12-02 07:48:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:59,562 INFO L225 Difference]: With dead ends: 9693 [2024-12-02 07:48:59,562 INFO L226 Difference]: Without dead ends: 5870 [2024-12-02 07:48:59,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:48:59,566 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 180 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:59,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 722 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:48:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2024-12-02 07:49:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 4128. [2024-12-02 07:49:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 3562 states have (on average 1.1462661426165075) internal successors, (4083), 3593 states have internal predecessors, (4083), 410 states have call successors, (410), 155 states have call predecessors, (410), 155 states have return successors, (410), 379 states have call predecessors, (410), 410 states have call successors, (410) [2024-12-02 07:49:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 4903 transitions. [2024-12-02 07:49:00,386 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 4903 transitions. Word has length 151 [2024-12-02 07:49:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:00,387 INFO L471 AbstractCegarLoop]: Abstraction has 4128 states and 4903 transitions. [2024-12-02 07:49:00,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:49:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 4903 transitions. [2024-12-02 07:49:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:49:00,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:00,388 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:00,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 07:49:00,388 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:00,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1934622519, now seen corresponding path program 1 times [2024-12-02 07:49:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627300501] [2024-12-02 07:49:00,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:49:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627300501] [2024-12-02 07:49:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627300501] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:01,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:01,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:49:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446734818] [2024-12-02 07:49:01,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:01,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:49:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:01,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:49:01,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:49:01,775 INFO L87 Difference]: Start difference. First operand 4128 states and 4903 transitions. Second operand has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:49:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:06,867 INFO L93 Difference]: Finished difference Result 9714 states and 11471 transitions. [2024-12-02 07:49:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:49:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) Word has length 152 [2024-12-02 07:49:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:06,876 INFO L225 Difference]: With dead ends: 9714 [2024-12-02 07:49:06,876 INFO L226 Difference]: Without dead ends: 5589 [2024-12-02 07:49:06,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:49:06,880 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 282 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:06,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1593 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:49:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2024-12-02 07:49:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 4864. [2024-12-02 07:49:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4864 states, 4166 states have (on average 1.1389822371579452) internal successors, (4745), 4206 states have internal predecessors, (4745), 500 states have call successors, (500), 197 states have call predecessors, (500), 197 states have return successors, (500), 460 states have call predecessors, (500), 500 states have call successors, (500) [2024-12-02 07:49:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4864 states to 4864 states and 5745 transitions. [2024-12-02 07:49:07,945 INFO L78 Accepts]: Start accepts. Automaton has 4864 states and 5745 transitions. Word has length 152 [2024-12-02 07:49:07,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:07,945 INFO L471 AbstractCegarLoop]: Abstraction has 4864 states and 5745 transitions. [2024-12-02 07:49:07,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 07:49:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4864 states and 5745 transitions. [2024-12-02 07:49:07,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 07:49:07,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:07,946 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:07,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 07:49:07,946 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:07,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash 785341998, now seen corresponding path program 1 times [2024-12-02 07:49:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509103130] [2024-12-02 07:49:07,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:49:09,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:09,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509103130] [2024-12-02 07:49:09,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509103130] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:09,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:09,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 07:49:09,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091569067] [2024-12-02 07:49:09,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:09,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 07:49:09,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:09,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 07:49:09,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:49:09,813 INFO L87 Difference]: Start difference. First operand 4864 states and 5745 transitions. Second operand has 20 states, 16 states have (on average 4.1875) internal successors, (67), 20 states have internal predecessors, (67), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:49:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:15,082 INFO L93 Difference]: Finished difference Result 9161 states and 10848 transitions. [2024-12-02 07:49:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 07:49:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 4.1875) internal successors, (67), 20 states have internal predecessors, (67), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) Word has length 154 [2024-12-02 07:49:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:15,094 INFO L225 Difference]: With dead ends: 9161 [2024-12-02 07:49:15,094 INFO L226 Difference]: Without dead ends: 5376 [2024-12-02 07:49:15,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:49:15,098 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 231 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:15,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2370 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 07:49:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2024-12-02 07:49:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 4871. [2024-12-02 07:49:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4871 states, 4157 states have (on average 1.1361558816454174) internal successors, (4723), 4195 states have internal predecessors, (4723), 510 states have call successors, (510), 203 states have call predecessors, (510), 203 states have return successors, (510), 472 states have call predecessors, (510), 510 states have call successors, (510) [2024-12-02 07:49:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 5743 transitions. [2024-12-02 07:49:16,291 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 5743 transitions. Word has length 154 [2024-12-02 07:49:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:16,291 INFO L471 AbstractCegarLoop]: Abstraction has 4871 states and 5743 transitions. [2024-12-02 07:49:16,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 4.1875) internal successors, (67), 20 states have internal predecessors, (67), 5 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 07:49:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 5743 transitions. [2024-12-02 07:49:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 07:49:16,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:16,292 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:16,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-12-02 07:49:16,292 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:16,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1534818322, now seen corresponding path program 1 times [2024-12-02 07:49:16,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:16,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846598476] [2024-12-02 07:49:16,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-12-02 07:49:16,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846598476] [2024-12-02 07:49:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846598476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:49:16,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386266276] [2024-12-02 07:49:16,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:16,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:49:16,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:16,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:49:16,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:49:16,881 INFO L87 Difference]: Start difference. First operand 4871 states and 5743 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:49:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:19,493 INFO L93 Difference]: Finished difference Result 10702 states and 12560 transitions. [2024-12-02 07:49:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:49:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2024-12-02 07:49:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:19,503 INFO L225 Difference]: With dead ends: 10702 [2024-12-02 07:49:19,503 INFO L226 Difference]: Without dead ends: 5834 [2024-12-02 07:49:19,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:49:19,507 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 58 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:19,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 707 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:49:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2024-12-02 07:49:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 2171. [2024-12-02 07:49:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 1979 states have (on average 1.1435068216270843) internal successors, (2263), 1990 states have internal predecessors, (2263), 136 states have call successors, (136), 55 states have call predecessors, (136), 55 states have return successors, (136), 125 states have call predecessors, (136), 136 states have call successors, (136) [2024-12-02 07:49:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2535 transitions. [2024-12-02 07:49:20,015 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2535 transitions. Word has length 157 [2024-12-02 07:49:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:20,015 INFO L471 AbstractCegarLoop]: Abstraction has 2171 states and 2535 transitions. [2024-12-02 07:49:20,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 07:49:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2535 transitions. [2024-12-02 07:49:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-12-02 07:49:20,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:20,017 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:49:20,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 07:49:20,017 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:20,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash -978363289, now seen corresponding path program 1 times [2024-12-02 07:49:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601913941] [2024-12-02 07:49:20,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2024-12-02 07:49:20,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:20,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601913941] [2024-12-02 07:49:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601913941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:20,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:49:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096522851] [2024-12-02 07:49:20,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:20,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:49:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:20,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:49:20,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:49:20,082 INFO L87 Difference]: Start difference. First operand 2171 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:49:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:20,653 INFO L93 Difference]: Finished difference Result 3744 states and 4344 transitions. [2024-12-02 07:49:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:49:20,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 274 [2024-12-02 07:49:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:20,659 INFO L225 Difference]: With dead ends: 3744 [2024-12-02 07:49:20,659 INFO L226 Difference]: Without dead ends: 2141 [2024-12-02 07:49:20,660 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 07:49:20,660 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 41 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:20,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 299 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:49:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2024-12-02 07:49:21,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 1893. [2024-12-02 07:49:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1701 states have (on average 1.1034685479129924) internal successors, (1877), 1712 states have internal predecessors, (1877), 136 states have call successors, (136), 55 states have call predecessors, (136), 55 states have return successors, (136), 125 states have call predecessors, (136), 136 states have call successors, (136) [2024-12-02 07:49:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2149 transitions. [2024-12-02 07:49:21,148 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2149 transitions. Word has length 274 [2024-12-02 07:49:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:21,149 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 2149 transitions. [2024-12-02 07:49:21,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-12-02 07:49:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2149 transitions. [2024-12-02 07:49:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 07:49:21,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:21,150 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:49:21,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-12-02 07:49:21,151 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:21,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash 402396059, now seen corresponding path program 1 times [2024-12-02 07:49:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:21,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995022086] [2024-12-02 07:49:21,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-12-02 07:49:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995022086] [2024-12-02 07:49:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995022086] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 07:49:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279028598] [2024-12-02 07:49:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:23,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:49:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:23,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:49:23,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:49:23,718 INFO L87 Difference]: Start difference. First operand 1893 states and 2149 transitions. Second operand has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 19 states have internal predecessors, (86), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 07:49:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:27,366 INFO L93 Difference]: Finished difference Result 3482 states and 3964 transitions. [2024-12-02 07:49:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 07:49:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 19 states have internal predecessors, (86), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) Word has length 280 [2024-12-02 07:49:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:27,372 INFO L225 Difference]: With dead ends: 3482 [2024-12-02 07:49:27,372 INFO L226 Difference]: Without dead ends: 2157 [2024-12-02 07:49:27,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:49:27,374 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 401 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:27,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1722 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 07:49:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2024-12-02 07:49:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1881. [2024-12-02 07:49:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1689 states have (on average 1.0994671403197158) internal successors, (1857), 1700 states have internal predecessors, (1857), 136 states have call successors, (136), 55 states have call predecessors, (136), 55 states have return successors, (136), 125 states have call predecessors, (136), 136 states have call successors, (136) [2024-12-02 07:49:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2129 transitions. [2024-12-02 07:49:27,986 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2129 transitions. Word has length 280 [2024-12-02 07:49:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:27,986 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 2129 transitions. [2024-12-02 07:49:27,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 5.733333333333333) internal successors, (86), 19 states have internal predecessors, (86), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 07:49:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2129 transitions. [2024-12-02 07:49:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-12-02 07:49:27,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:27,988 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:49:27,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-12-02 07:49:27,988 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:27,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1983709363, now seen corresponding path program 1 times [2024-12-02 07:49:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638657190] [2024-12-02 07:49:27,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2582 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2024-12-02 07:49:30,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638657190] [2024-12-02 07:49:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638657190] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:30,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:49:30,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013175793] [2024-12-02 07:49:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:30,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:49:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:30,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:49:30,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:49:30,088 INFO L87 Difference]: Start difference. First operand 1881 states and 2129 transitions. Second operand has 16 states, 12 states have (on average 7.25) internal successors, (87), 16 states have internal predecessors, (87), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 07:49:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:33,579 INFO L93 Difference]: Finished difference Result 3658 states and 4143 transitions. [2024-12-02 07:49:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 07:49:33,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 7.25) internal successors, (87), 16 states have internal predecessors, (87), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) Word has length 281 [2024-12-02 07:49:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:33,585 INFO L225 Difference]: With dead ends: 3658 [2024-12-02 07:49:33,585 INFO L226 Difference]: Without dead ends: 2270 [2024-12-02 07:49:33,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:49:33,587 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 286 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:33,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1834 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:49:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-12-02 07:49:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1798. [2024-12-02 07:49:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1611 states have (on average 1.100558659217877) internal successors, (1773), 1621 states have internal predecessors, (1773), 132 states have call successors, (132), 54 states have call predecessors, (132), 54 states have return successors, (132), 122 states have call predecessors, (132), 132 states have call successors, (132) [2024-12-02 07:49:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2037 transitions. [2024-12-02 07:49:34,116 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2037 transitions. Word has length 281 [2024-12-02 07:49:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:34,116 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2037 transitions. [2024-12-02 07:49:34,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 7.25) internal successors, (87), 16 states have internal predecessors, (87), 5 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 5 states have call successors, (22) [2024-12-02 07:49:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2037 transitions. [2024-12-02 07:49:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-12-02 07:49:34,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:34,118 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:49:34,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-12-02 07:49:34,118 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:34,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1756831665, now seen corresponding path program 1 times [2024-12-02 07:49:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:34,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611036059] [2024-12-02 07:49:34,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2582 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2557 trivial. 0 not checked. [2024-12-02 07:49:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611036059] [2024-12-02 07:49:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611036059] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:49:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136979003] [2024-12-02 07:49:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:35,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:49:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:35,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:49:35,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:49:35,969 INFO L87 Difference]: Start difference. First operand 1798 states and 2037 transitions. Second operand has 13 states, 10 states have (on average 8.7) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 07:49:42,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 07:49:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:43,632 INFO L93 Difference]: Finished difference Result 3270 states and 3707 transitions. [2024-12-02 07:49:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 07:49:43,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 8.7) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 4 states have call successors, (21) Word has length 282 [2024-12-02 07:49:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:43,637 INFO L225 Difference]: With dead ends: 3270 [2024-12-02 07:49:43,637 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 07:49:43,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:49:43,639 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 132 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:43,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1132 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 759 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 07:49:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 07:49:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 07:49:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:49:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 07:49:43,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 282 [2024-12-02 07:49:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:43,643 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 07:49:43,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 8.7) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 07:49:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 07:49:43,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 07:49:43,644 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 07:49:43,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-12-02 07:49:43,647 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:43,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 07:49:52,196 WARN L286 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 222 DAG size of output: 223 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)