./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3fff67c56135375ffd751199deaa864a3ed3a59a2eb1eeee2e19554b4f47694 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:06:50,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,480 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,482 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:06:50,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,485 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,489 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_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3fff67c56135375ffd751199deaa864a3ed3a59a2eb1eeee2e19554b4f47694 [2024-11-28 02:06:50,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:50,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:50,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:50,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:50,844 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:50,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-11-28 02:06:53,727 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/data/e424181c9/269be8b5c8ea4c7a849c9388b81dd51f/FLAG1754a61a2 [2024-11-28 02:06:54,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:54,061 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-11-28 02:06:54,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/data/e424181c9/269be8b5c8ea4c7a849c9388b81dd51f/FLAG1754a61a2 [2024-11-28 02:06:54,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/data/e424181c9/269be8b5c8ea4c7a849c9388b81dd51f [2024-11-28 02:06:54,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:54,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:54,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:54,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:54,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8603eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:54,339 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_87b96a19-f98f-47d9-9325-819e4bdb4c6d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i[919,932] [2024-11-28 02:06:54,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,502 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:54,520 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_87b96a19-f98f-47d9-9325-819e4bdb4c6d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i[919,932] [2024-11-28 02:06:54,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,621 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:54,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54 WrapperNode [2024-11-28 02:06:54,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:54,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:54,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,730 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 297 [2024-11-28 02:06:54,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:54,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:54,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,787 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:06:54,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,809 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:54,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:54,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:54,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:54,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:54,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:54,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:54,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:06:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:06:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:54,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:55,048 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:55,053 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:55,913 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:55,913 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:55,929 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:55,930 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:06:55,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55 BoogieIcfgContainer [2024-11-28 02:06:55,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:55,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:55,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:55,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:55,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ... [2024-11-28 02:06:55,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc7f2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (2/3) ... [2024-11-28 02:06:55,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc7f2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55" (3/3) ... [2024-11-28 02:06:55,944 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i [2024-11-28 02:06:55,963 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:55,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-10.i that has 2 procedures, 127 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:06:56,047 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:56,062 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;@75733e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:56,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:06:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 91 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 02:06:56,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-28 02:06:56,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,093 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,094 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:56,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 303211599, now seen corresponding path program 1 times [2024-11-28 02:06:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789647512] [2024-11-28 02:06:56,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-28 02:06:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789647512] [2024-11-28 02:06:56,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789647512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133543669] [2024-11-28 02:06:56,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:06:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:06:56,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-28 02:06:56,955 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:56,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133543669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:56,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:06:56,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370147543] [2024-11-28 02:06:56,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:06:56,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:06:56,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:06:56,997 INFO L87 Difference]: Start difference. First operand has 127 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 91 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:06:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,035 INFO L93 Difference]: Finished difference Result 247 states and 424 transitions. [2024-11-28 02:06:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:06:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 219 [2024-11-28 02:06:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,044 INFO L225 Difference]: With dead ends: 247 [2024-11-28 02:06:57,045 INFO L226 Difference]: Without dead ends: 123 [2024-11-28 02:06:57,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:06:57,051 INFO L435 NwaCegarLoop]: 191 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, 191 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-28 02:06:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-28 02:06:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.4137931034482758) internal successors, (123), 87 states have internal predecessors, (123), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 02:06:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 191 transitions. [2024-11-28 02:06:57,130 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 191 transitions. Word has length 219 [2024-11-28 02:06:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,131 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 191 transitions. [2024-11-28 02:06:57,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:06:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 191 transitions. [2024-11-28 02:06:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-28 02:06:57,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,140 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:06:57,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87b96a19-f98f-47d9-9325-819e4bdb4c6d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:06:57,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:57,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1416959721, now seen corresponding path program 1 times [2024-11-28 02:06:57,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089818928] [2024-11-28 02:06:57,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:06:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089818928] [2024-11-28 02:06:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089818928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972612922] [2024-11-28 02:06:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:06:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:06:58,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:06:58,532 INFO L87 Difference]: Start difference. First operand 123 states and 191 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:06:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,968 INFO L93 Difference]: Finished difference Result 364 states and 568 transitions. [2024-11-28 02:06:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:06:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-11-28 02:06:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,976 INFO L225 Difference]: With dead ends: 364 [2024-11-28 02:06:58,976 INFO L226 Difference]: Without dead ends: 244 [2024-11-28 02:06:58,977 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 [2024-11-28 02:06:58,980 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 127 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:58,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 550 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:06:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-28 02:06:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 184. [2024-11-28 02:06:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 113 states have (on average 1.3185840707964602) internal successors, (149), 113 states have internal predecessors, (149), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 02:06:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 285 transitions. [2024-11-28 02:06:59,031 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 285 transitions. Word has length 219 [2024-11-28 02:06:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,033 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 285 transitions. [2024-11-28 02:06:59,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:06:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 285 transitions. [2024-11-28 02:06:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:06:59,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,038 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:06:59,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:59,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1252368267, now seen corresponding path program 1 times [2024-11-28 02:06:59,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112689172] [2024-11-28 02:06:59,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:07:26,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112689172] [2024-11-28 02:07:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112689172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:26,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:07:26,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705217283] [2024-11-28 02:07:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:26,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:07:26,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:26,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:07:26,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:07:26,427 INFO L87 Difference]: Start difference. First operand 184 states and 285 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:32,387 INFO L93 Difference]: Finished difference Result 535 states and 825 transitions. [2024-11-28 02:07:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:07:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-11-28 02:07:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:32,394 INFO L225 Difference]: With dead ends: 535 [2024-11-28 02:07:32,395 INFO L226 Difference]: Without dead ends: 415 [2024-11-28 02:07:32,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:07:32,398 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 2047 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:32,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1116 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:07:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-28 02:07:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 238. [2024-11-28 02:07:32,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.406060606060606) internal successors, (232), 165 states have internal predecessors, (232), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 02:07:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 368 transitions. [2024-11-28 02:07:32,461 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 368 transitions. Word has length 220 [2024-11-28 02:07:32,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:32,462 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 368 transitions. [2024-11-28 02:07:32,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 368 transitions. [2024-11-28 02:07:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:07:32,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:32,471 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:07:32,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:32,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -27495411, now seen corresponding path program 1 times [2024-11-28 02:07:32,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883031125] [2024-11-28 02:07:32,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:07:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883031125] [2024-11-28 02:07:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883031125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:32,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195119822] [2024-11-28 02:07:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:32,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:32,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:32,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:32,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:32,611 INFO L87 Difference]: Start difference. First operand 238 states and 368 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:07:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:32,679 INFO L93 Difference]: Finished difference Result 417 states and 647 transitions. [2024-11-28 02:07:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:32,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:07:32,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:32,687 INFO L225 Difference]: With dead ends: 417 [2024-11-28 02:07:32,687 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 02:07:32,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:32,692 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 87 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:32,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 390 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 02:07:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 280. [2024-11-28 02:07:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 198 states have (on average 1.398989898989899) internal successors, (277), 199 states have internal predecessors, (277), 76 states have call successors, (76), 5 states have call predecessors, (76), 5 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-28 02:07:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 429 transitions. [2024-11-28 02:07:32,753 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 429 transitions. Word has length 220 [2024-11-28 02:07:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:32,754 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 429 transitions. [2024-11-28 02:07:32,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:07:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 429 transitions. [2024-11-28 02:07:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:07:32,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:32,759 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:32,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:32,760 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:32,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 280542157, now seen corresponding path program 1 times [2024-11-28 02:07:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301451408] [2024-11-28 02:07:32,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:07:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301451408] [2024-11-28 02:07:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301451408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:07:51,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366458409] [2024-11-28 02:07:51,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:51,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:07:51,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:51,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:07:51,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:07:51,490 INFO L87 Difference]: Start difference. First operand 280 states and 429 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:55,738 INFO L93 Difference]: Finished difference Result 694 states and 1056 transitions. [2024-11-28 02:07:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:07:55,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-11-28 02:07:55,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:55,744 INFO L225 Difference]: With dead ends: 694 [2024-11-28 02:07:55,744 INFO L226 Difference]: Without dead ends: 531 [2024-11-28 02:07:55,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:07:55,746 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 1909 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:55,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 1083 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:07:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-28 02:07:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 318. [2024-11-28 02:07:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 234 states have (on average 1.4102564102564104) internal successors, (330), 235 states have internal predecessors, (330), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-28 02:07:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 482 transitions. [2024-11-28 02:07:55,779 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 482 transitions. Word has length 220 [2024-11-28 02:07:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:55,780 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 482 transitions. [2024-11-28 02:07:55,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:07:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 482 transitions. [2024-11-28 02:07:55,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:07:55,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:55,783 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:55,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:55,783 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1866161803, now seen corresponding path program 1 times [2024-11-28 02:07:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606174193] [2024-11-28 02:07:55,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:08:20,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606174193] [2024-11-28 02:08:20,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606174193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:20,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:20,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:08:20,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938225115] [2024-11-28 02:08:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:20,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:08:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:20,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:08:20,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:08:20,624 INFO L87 Difference]: Start difference. First operand 318 states and 482 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:08:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:23,045 INFO L93 Difference]: Finished difference Result 890 states and 1369 transitions. [2024-11-28 02:08:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:08:23,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:08:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:23,054 INFO L225 Difference]: With dead ends: 890 [2024-11-28 02:08:23,056 INFO L226 Difference]: Without dead ends: 727 [2024-11-28 02:08:23,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:08:23,058 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 674 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:23,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 916 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:08:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-28 02:08:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 346. [2024-11-28 02:08:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 262 states have (on average 1.4274809160305344) internal successors, (374), 263 states have internal predecessors, (374), 76 states have call successors, (76), 7 states have call predecessors, (76), 7 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-28 02:08:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 526 transitions. [2024-11-28 02:08:23,105 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 526 transitions. Word has length 220 [2024-11-28 02:08:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:23,106 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 526 transitions. [2024-11-28 02:08:23,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:08:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 526 transitions. [2024-11-28 02:08:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:08:23,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:23,111 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:23,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:08:23,111 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:08:23,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2120767925, now seen corresponding path program 1 times [2024-11-28 02:08:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436397016] [2024-11-28 02:08:23,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:10:20,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:20,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436397016] [2024-11-28 02:10:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436397016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:20,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:20,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 02:10:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918295079] [2024-11-28 02:10:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:20,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:10:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:20,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:10:20,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:10:20,244 INFO L87 Difference]: Start difference. First operand 346 states and 526 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:10:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:47,611 INFO L93 Difference]: Finished difference Result 1018 states and 1564 transitions. [2024-11-28 02:10:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:10:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-11-28 02:10:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:47,618 INFO L225 Difference]: With dead ends: 1018 [2024-11-28 02:10:47,618 INFO L226 Difference]: Without dead ends: 855 [2024-11-28 02:10:47,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:10:47,623 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 2085 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2085 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:47,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2085 Valid, 1506 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-28 02:10:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-28 02:10:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 542. [2024-11-28 02:10:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 420 states have (on average 1.4452380952380952) internal successors, (607), 421 states have internal predecessors, (607), 110 states have call successors, (110), 11 states have call predecessors, (110), 11 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-28 02:10:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 827 transitions. [2024-11-28 02:10:47,685 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 827 transitions. Word has length 220 [2024-11-28 02:10:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:47,686 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 827 transitions. [2024-11-28 02:10:47,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:10:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 827 transitions. [2024-11-28 02:10:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:10:47,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:47,694 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:47,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:10:47,695 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:47,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1713602549, now seen corresponding path program 1 times [2024-11-28 02:10:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831837789] [2024-11-28 02:10:47,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:11:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831837789] [2024-11-28 02:11:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831837789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:11:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956219483] [2024-11-28 02:11:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:09,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:11:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:09,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:11:09,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:09,864 INFO L87 Difference]: Start difference. First operand 542 states and 827 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:11:13,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:13,333 INFO L93 Difference]: Finished difference Result 1465 states and 2242 transitions. [2024-11-28 02:11:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:11:13,334 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:11:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:13,340 INFO L225 Difference]: With dead ends: 1465 [2024-11-28 02:11:13,341 INFO L226 Difference]: Without dead ends: 1302 [2024-11-28 02:11:13,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:11:13,343 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1102 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:13,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1202 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:11:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-28 02:11:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 690. [2024-11-28 02:11:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 529 states have (on average 1.4272211720226844) internal successors, (755), 530 states have internal predecessors, (755), 144 states have call successors, (144), 16 states have call predecessors, (144), 16 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:11:13,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1043 transitions. [2024-11-28 02:11:13,420 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1043 transitions. Word has length 220 [2024-11-28 02:11:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:13,421 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1043 transitions. [2024-11-28 02:11:13,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:11:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1043 transitions. [2024-11-28 02:11:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:11:13,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:13,425 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:13,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:11:13,428 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:13,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash 180054665, now seen corresponding path program 1 times [2024-11-28 02:11:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:13,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016824047] [2024-11-28 02:11:13,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:11:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:42,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016824047] [2024-11-28 02:11:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016824047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:42,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:11:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123189715] [2024-11-28 02:11:42,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:42,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:11:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:42,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:11:42,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:11:42,122 INFO L87 Difference]: Start difference. First operand 690 states and 1043 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:11:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:48,090 INFO L93 Difference]: Finished difference Result 1526 states and 2342 transitions. [2024-11-28 02:11:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:11:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:11:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:48,097 INFO L225 Difference]: With dead ends: 1526 [2024-11-28 02:11:48,097 INFO L226 Difference]: Without dead ends: 1363 [2024-11-28 02:11:48,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:11:48,099 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 2232 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:48,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 1454 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:11:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2024-11-28 02:11:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 695. [2024-11-28 02:11:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 534 states have (on average 1.4269662921348314) internal successors, (762), 535 states have internal predecessors, (762), 144 states have call successors, (144), 16 states have call predecessors, (144), 16 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:11:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1050 transitions. [2024-11-28 02:11:48,165 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1050 transitions. Word has length 220 [2024-11-28 02:11:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:48,165 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1050 transitions. [2024-11-28 02:11:48,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:11:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1050 transitions. [2024-11-28 02:11:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:11:48,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:48,167 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:48,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:11:48,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:11:48,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 499396875, now seen corresponding path program 1 times [2024-11-28 02:11:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:48,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952596552] [2024-11-28 02:11:48,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:48,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:12:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952596552] [2024-11-28 02:12:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952596552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:12:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164868615] [2024-11-28 02:12:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:12:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:00,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:12:00,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:12:00,133 INFO L87 Difference]: Start difference. First operand 695 states and 1050 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:12:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:02,526 INFO L93 Difference]: Finished difference Result 1458 states and 2182 transitions. [2024-11-28 02:12:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:12:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 220 [2024-11-28 02:12:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:02,534 INFO L225 Difference]: With dead ends: 1458 [2024-11-28 02:12:02,534 INFO L226 Difference]: Without dead ends: 950 [2024-11-28 02:12:02,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:12:02,537 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 551 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:02,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1040 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:12:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2024-11-28 02:12:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 775. [2024-11-28 02:12:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 611 states have (on average 1.4320785597381342) internal successors, (875), 612 states have internal predecessors, (875), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:12:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1163 transitions. [2024-11-28 02:12:02,621 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1163 transitions. Word has length 220 [2024-11-28 02:12:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:02,621 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1163 transitions. [2024-11-28 02:12:02,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:12:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1163 transitions. [2024-11-28 02:12:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:12:02,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:02,625 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:02,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:12:02,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:02,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1494747831, now seen corresponding path program 1 times [2024-11-28 02:12:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973255855] [2024-11-28 02:12:02,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:12:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973255855] [2024-11-28 02:12:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973255855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:19,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:12:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727786887] [2024-11-28 02:12:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:19,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:12:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:19,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:12:19,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:12:19,698 INFO L87 Difference]: Start difference. First operand 775 states and 1163 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:12:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:21,633 INFO L93 Difference]: Finished difference Result 1955 states and 2952 transitions. [2024-11-28 02:12:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:12:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:12:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:21,640 INFO L225 Difference]: With dead ends: 1955 [2024-11-28 02:12:21,641 INFO L226 Difference]: Without dead ends: 1367 [2024-11-28 02:12:21,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:12:21,643 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 623 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:21,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1264 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:12:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2024-11-28 02:12:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 769. [2024-11-28 02:12:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 605 states have (on average 1.4330578512396694) internal successors, (867), 606 states have internal predecessors, (867), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:12:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1155 transitions. [2024-11-28 02:12:21,718 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1155 transitions. Word has length 220 [2024-11-28 02:12:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:21,718 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1155 transitions. [2024-11-28 02:12:21,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:12:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1155 transitions. [2024-11-28 02:12:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:12:21,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:21,721 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:21,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:12:21,721 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:21,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2000175309, now seen corresponding path program 1 times [2024-11-28 02:12:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:21,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596236671] [2024-11-28 02:12:21,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:21,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:12:50,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:50,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596236671] [2024-11-28 02:12:50,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596236671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:50,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:50,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:12:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350749173] [2024-11-28 02:12:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:50,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:12:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:50,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:12:50,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:12:50,845 INFO L87 Difference]: Start difference. First operand 769 states and 1155 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:13:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:00,817 INFO L93 Difference]: Finished difference Result 1686 states and 2562 transitions. [2024-11-28 02:13:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:13:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-11-28 02:13:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:00,824 INFO L225 Difference]: With dead ends: 1686 [2024-11-28 02:13:00,824 INFO L226 Difference]: Without dead ends: 1275 [2024-11-28 02:13:00,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 02:13:00,826 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1233 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:00,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1513 Invalid, 2581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 02:13:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2024-11-28 02:13:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 809. [2024-11-28 02:13:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 645 states have (on average 1.426356589147287) internal successors, (920), 646 states have internal predecessors, (920), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:13:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1208 transitions. [2024-11-28 02:13:00,914 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1208 transitions. Word has length 220 [2024-11-28 02:13:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:00,914 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1208 transitions. [2024-11-28 02:13:00,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:13:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1208 transitions. [2024-11-28 02:13:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:13:00,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:00,917 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:00,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:13:00,917 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:00,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -607762933, now seen corresponding path program 1 times [2024-11-28 02:13:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906348862] [2024-11-28 02:13:00,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:13:10,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906348862] [2024-11-28 02:13:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906348862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:10,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:13:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299369375] [2024-11-28 02:13:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:10,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:13:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:10,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:13:10,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:13:10,881 INFO L87 Difference]: Start difference. First operand 809 states and 1208 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:13:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:14,726 INFO L93 Difference]: Finished difference Result 1642 states and 2503 transitions. [2024-11-28 02:13:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:13:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:13:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:14,732 INFO L225 Difference]: With dead ends: 1642 [2024-11-28 02:13:14,732 INFO L226 Difference]: Without dead ends: 1456 [2024-11-28 02:13:14,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:13:14,734 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 923 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:14,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1386 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 02:13:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2024-11-28 02:13:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 815. [2024-11-28 02:13:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 651 states have (on average 1.4270353302611367) internal successors, (929), 652 states have internal predecessors, (929), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 02:13:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1217 transitions. [2024-11-28 02:13:14,811 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1217 transitions. Word has length 220 [2024-11-28 02:13:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:14,812 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1217 transitions. [2024-11-28 02:13:14,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:13:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1217 transitions. [2024-11-28 02:13:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:13:14,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:14,814 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:14,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:13:14,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:14,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1579589043, now seen corresponding path program 1 times [2024-11-28 02:13:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485180560] [2024-11-28 02:13:14,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:14:17,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:17,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485180560] [2024-11-28 02:14:17,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485180560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:17,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:17,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:14:17,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50861946] [2024-11-28 02:14:17,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:17,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:14:17,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:17,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:14:17,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:14:17,498 INFO L87 Difference]: Start difference. First operand 815 states and 1217 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:14:20,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:20,904 INFO L93 Difference]: Finished difference Result 1767 states and 2672 transitions. [2024-11-28 02:14:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:14:20,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:14:20,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:20,910 INFO L225 Difference]: With dead ends: 1767 [2024-11-28 02:14:20,910 INFO L226 Difference]: Without dead ends: 1604 [2024-11-28 02:14:20,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:14:20,912 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 796 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:20,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1493 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:14:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2024-11-28 02:14:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1003. [2024-11-28 02:14:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 799 states have (on average 1.4192740926157696) internal successors, (1134), 800 states have internal predecessors, (1134), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-28 02:14:21,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1490 transitions. [2024-11-28 02:14:21,032 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1490 transitions. Word has length 220 [2024-11-28 02:14:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:21,032 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1490 transitions. [2024-11-28 02:14:21,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:14:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1490 transitions. [2024-11-28 02:14:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:14:21,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:21,035 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:21,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:14:21,036 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:21,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 6030603, now seen corresponding path program 1 times [2024-11-28 02:14:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783918213] [2024-11-28 02:14:21,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:14:38,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783918213] [2024-11-28 02:14:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783918213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:38,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:38,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:14:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168613884] [2024-11-28 02:14:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:38,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:14:38,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:38,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:14:38,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:14:38,562 INFO L87 Difference]: Start difference. First operand 1003 states and 1490 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:14:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:46,114 INFO L93 Difference]: Finished difference Result 1895 states and 2865 transitions. [2024-11-28 02:14:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:14:46,115 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 220 [2024-11-28 02:14:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:46,118 INFO L225 Difference]: With dead ends: 1895 [2024-11-28 02:14:46,119 INFO L226 Difference]: Without dead ends: 1732 [2024-11-28 02:14:46,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:14:46,120 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1412 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:46,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1824 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3122 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:14:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-28 02:14:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 998. [2024-11-28 02:14:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 794 states have (on average 1.4193954659949621) internal successors, (1127), 795 states have internal predecessors, (1127), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-28 02:14:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1483 transitions. [2024-11-28 02:14:46,212 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1483 transitions. Word has length 220 [2024-11-28 02:14:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:46,213 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1483 transitions. [2024-11-28 02:14:46,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:14:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1483 transitions. [2024-11-28 02:14:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:14:46,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:46,215 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:46,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:14:46,216 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:46,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash 314068171, now seen corresponding path program 1 times [2024-11-28 02:14:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:46,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516946207] [2024-11-28 02:14:46,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:15:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516946207] [2024-11-28 02:15:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516946207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:29,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:15:29,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786430187] [2024-11-28 02:15:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:29,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:15:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:29,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:15:29,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:15:29,869 INFO L87 Difference]: Start difference. First operand 998 states and 1483 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:15:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:36,990 INFO L93 Difference]: Finished difference Result 1835 states and 2778 transitions. [2024-11-28 02:15:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:15:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:15:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:36,997 INFO L225 Difference]: With dead ends: 1835 [2024-11-28 02:15:36,997 INFO L226 Difference]: Without dead ends: 1672 [2024-11-28 02:15:36,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:15:36,999 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 889 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:36,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1740 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:15:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2024-11-28 02:15:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1015. [2024-11-28 02:15:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 811 states have (on average 1.4217016029593095) internal successors, (1153), 812 states have internal predecessors, (1153), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-28 02:15:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1509 transitions. [2024-11-28 02:15:37,091 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1509 transitions. Word has length 220 [2024-11-28 02:15:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:37,092 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1509 transitions. [2024-11-28 02:15:37,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:15:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1509 transitions. [2024-11-28 02:15:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 02:15:37,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:37,094 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:37,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:15:37,094 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:37,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1360734325, now seen corresponding path program 1 times [2024-11-28 02:15:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577943641] [2024-11-28 02:15:37,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:15:56,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:56,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577943641] [2024-11-28 02:15:56,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577943641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:56,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:15:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170905327] [2024-11-28 02:15:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:56,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:15:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:56,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:15:56,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:15:56,675 INFO L87 Difference]: Start difference. First operand 1015 states and 1509 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:15:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:58,788 INFO L93 Difference]: Finished difference Result 2149 states and 3228 transitions. [2024-11-28 02:15:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:15:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2024-11-28 02:15:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:58,795 INFO L225 Difference]: With dead ends: 2149 [2024-11-28 02:15:58,795 INFO L226 Difference]: Without dead ends: 1542 [2024-11-28 02:15:58,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:15:58,798 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 563 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:58,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1562 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:15:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-28 02:15:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1003. [2024-11-28 02:15:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 799 states have (on average 1.4230287859824782) internal successors, (1137), 800 states have internal predecessors, (1137), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-28 02:15:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1493 transitions. [2024-11-28 02:15:58,885 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1493 transitions. Word has length 220 [2024-11-28 02:15:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:58,885 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1493 transitions. [2024-11-28 02:15:58,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:15:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1493 transitions. [2024-11-28 02:15:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:15:58,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:58,888 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:58,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:15:58,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:58,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1279205234, now seen corresponding path program 1 times [2024-11-28 02:15:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:58,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680047186] [2024-11-28 02:15:58,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:16:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680047186] [2024-11-28 02:16:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680047186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:11,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:11,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:16:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385532570] [2024-11-28 02:16:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:11,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:16:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:16:11,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:16:11,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:16:11,447 INFO L87 Difference]: Start difference. First operand 1003 states and 1493 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:16:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:13,185 INFO L93 Difference]: Finished difference Result 1569 states and 2372 transitions. [2024-11-28 02:16:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:16:13,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-28 02:16:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:13,191 INFO L225 Difference]: With dead ends: 1569 [2024-11-28 02:16:13,192 INFO L226 Difference]: Without dead ends: 1383 [2024-11-28 02:16:13,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:16:13,193 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 412 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:13,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 961 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:16:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-11-28 02:16:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 991. [2024-11-28 02:16:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 787 states have (on average 1.423125794155019) internal successors, (1120), 788 states have internal predecessors, (1120), 178 states have call successors, (178), 25 states have call predecessors, (178), 25 states have return successors, (178), 177 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-28 02:16:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1476 transitions. [2024-11-28 02:16:13,273 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1476 transitions. Word has length 221 [2024-11-28 02:16:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:13,273 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1476 transitions. [2024-11-28 02:16:13,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:16:13,273 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1476 transitions. [2024-11-28 02:16:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:16:13,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:13,275 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:16:13,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:16:13,276 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:13,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1866011248, now seen corresponding path program 1 times [2024-11-28 02:16:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:16:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723397891] [2024-11-28 02:16:13,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:13,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:16:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:16:13,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:13,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723397891] [2024-11-28 02:16:13,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723397891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:13,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:13,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:16:13,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523542038] [2024-11-28 02:16:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:13,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:16:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:16:13,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:16:13,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:16:13,510 INFO L87 Difference]: Start difference. First operand 991 states and 1476 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:16:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:13,667 INFO L93 Difference]: Finished difference Result 1265 states and 1913 transitions. [2024-11-28 02:16:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:16:13,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-28 02:16:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:13,673 INFO L225 Difference]: With dead ends: 1265 [2024-11-28 02:16:13,673 INFO L226 Difference]: Without dead ends: 1054 [2024-11-28 02:16:13,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:16:13,675 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 81 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:13,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 538 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:16:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-11-28 02:16:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 938. [2024-11-28 02:16:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 742 states have (on average 1.4110512129380053) internal successors, (1047), 742 states have internal predecessors, (1047), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 02:16:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1387 transitions. [2024-11-28 02:16:13,785 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1387 transitions. Word has length 221 [2024-11-28 02:16:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:13,785 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 1387 transitions. [2024-11-28 02:16:13,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:16:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1387 transitions. [2024-11-28 02:16:13,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:16:13,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:13,788 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:16:13,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:16:13,788 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:16:13,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1992236020, now seen corresponding path program 1 times [2024-11-28 02:16:13,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:16:13,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013754298] [2024-11-28 02:16:13,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:13,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:16:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:17:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:29,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013754298] [2024-11-28 02:17:29,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013754298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:17:29,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:17:29,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:17:29,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303690240] [2024-11-28 02:17:29,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:17:29,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:17:29,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:17:29,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:17:29,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:17:29,916 INFO L87 Difference]: Start difference. First operand 938 states and 1387 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:17:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:40,078 INFO L93 Difference]: Finished difference Result 1516 states and 2266 transitions. [2024-11-28 02:17:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:17:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 221 [2024-11-28 02:17:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:40,083 INFO L225 Difference]: With dead ends: 1516 [2024-11-28 02:17:40,083 INFO L226 Difference]: Without dead ends: 1371 [2024-11-28 02:17:40,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:17:40,084 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 1335 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:40,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1143 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:17:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-28 02:17:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 954. [2024-11-28 02:17:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 758 states have (on average 1.4142480211081794) internal successors, (1072), 758 states have internal predecessors, (1072), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 02:17:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1412 transitions. [2024-11-28 02:17:40,167 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1412 transitions. Word has length 221 [2024-11-28 02:17:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:40,168 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1412 transitions. [2024-11-28 02:17:40,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-28 02:17:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1412 transitions. [2024-11-28 02:17:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:17:40,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:40,170 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:40,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:17:40,170 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:17:40,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash 568525198, now seen corresponding path program 1 times [2024-11-28 02:17:40,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:40,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513808136] [2024-11-28 02:17:40,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:40,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:18:09,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:18:09,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513808136] [2024-11-28 02:18:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513808136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:18:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942257847] [2024-11-28 02:18:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:09,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:18:09,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:18:09,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:18:09,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:18:09,781 INFO L87 Difference]: Start difference. First operand 954 states and 1412 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:18:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:14,734 INFO L93 Difference]: Finished difference Result 1438 states and 2151 transitions. [2024-11-28 02:18:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:18:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-28 02:18:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:14,740 INFO L225 Difference]: With dead ends: 1438 [2024-11-28 02:18:14,741 INFO L226 Difference]: Without dead ends: 1293 [2024-11-28 02:18:14,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:18:14,743 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 819 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:14,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1002 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:18:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-11-28 02:18:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 955. [2024-11-28 02:18:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 759 states have (on average 1.4150197628458498) internal successors, (1074), 759 states have internal predecessors, (1074), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 02:18:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1414 transitions. [2024-11-28 02:18:14,810 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1414 transitions. Word has length 221 [2024-11-28 02:18:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:14,810 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1414 transitions. [2024-11-28 02:18:14,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 17 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:18:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1414 transitions. [2024-11-28 02:18:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:18:14,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:14,813 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:14,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:18:14,813 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:18:14,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash 876562766, now seen corresponding path program 1 times [2024-11-28 02:18:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:14,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971184327] [2024-11-28 02:18:14,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:18:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:19:48,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:19:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971184327] [2024-11-28 02:19:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971184327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:48,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:48,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:19:48,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738584456] [2024-11-28 02:19:48,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:48,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:19:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:19:48,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:19:48,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:19:48,881 INFO L87 Difference]: Start difference. First operand 955 states and 1414 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:19:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:58,290 INFO L93 Difference]: Finished difference Result 1574 states and 2363 transitions. [2024-11-28 02:19:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:19:58,294 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-28 02:19:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:58,299 INFO L225 Difference]: With dead ends: 1574 [2024-11-28 02:19:58,299 INFO L226 Difference]: Without dead ends: 1429 [2024-11-28 02:19:58,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:19:58,302 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 1162 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:58,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 882 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:19:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2024-11-28 02:19:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 977. [2024-11-28 02:19:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 781 states have (on average 1.4148527528809218) internal successors, (1105), 781 states have internal predecessors, (1105), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 02:19:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1445 transitions. [2024-11-28 02:19:58,385 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1445 transitions. Word has length 221 [2024-11-28 02:19:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:58,385 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1445 transitions. [2024-11-28 02:19:58,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:19:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1445 transitions. [2024-11-28 02:19:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:19:58,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:58,388 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:58,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:19:58,388 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:19:58,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:58,389 INFO L85 PathProgramCache]: Analyzing trace with hash -18280816, now seen corresponding path program 1 times [2024-11-28 02:19:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:19:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392471837] [2024-11-28 02:19:58,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:19:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:19:58,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:19:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392471837] [2024-11-28 02:19:58,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392471837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:58,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:58,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:58,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864353185] [2024-11-28 02:19:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:58,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:19:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:19:58,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:19:58,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:58,572 INFO L87 Difference]: Start difference. First operand 977 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:19:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:58,730 INFO L93 Difference]: Finished difference Result 1334 states and 2015 transitions. [2024-11-28 02:19:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:19:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-28 02:19:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:58,736 INFO L225 Difference]: With dead ends: 1334 [2024-11-28 02:19:58,736 INFO L226 Difference]: Without dead ends: 1189 [2024-11-28 02:19:58,737 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 [2024-11-28 02:19:58,737 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:58,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 581 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:19:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2024-11-28 02:19:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 977. [2024-11-28 02:19:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 781 states have (on average 1.4148527528809218) internal successors, (1105), 781 states have internal predecessors, (1105), 170 states have call successors, (170), 25 states have call predecessors, (170), 25 states have return successors, (170), 170 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-28 02:19:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1445 transitions. [2024-11-28 02:19:58,807 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1445 transitions. Word has length 221 [2024-11-28 02:19:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:58,807 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1445 transitions. [2024-11-28 02:19:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:19:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1445 transitions. [2024-11-28 02:19:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:19:58,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:58,809 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:58,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:19:58,810 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:19:58,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash 613787534, now seen corresponding path program 1 times [2024-11-28 02:19:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:19:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366991340] [2024-11-28 02:19:58,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:19:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:19:58,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:19:58,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366991340] [2024-11-28 02:19:58,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366991340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:58,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:58,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270118139] [2024-11-28 02:19:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:58,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:19:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:19:58,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:19:58,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:58,975 INFO L87 Difference]: Start difference. First operand 977 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:19:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:59,131 INFO L93 Difference]: Finished difference Result 2073 states and 3071 transitions. [2024-11-28 02:19:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:19:59,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-28 02:19:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:59,137 INFO L225 Difference]: With dead ends: 2073 [2024-11-28 02:19:59,137 INFO L226 Difference]: Without dead ends: 1304 [2024-11-28 02:19:59,139 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 [2024-11-28 02:19:59,139 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 84 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:59,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 705 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:19:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-11-28 02:19:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1098. [2024-11-28 02:19:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 897 states have (on average 1.4280936454849498) internal successors, (1281), 898 states have internal predecessors, (1281), 174 states have call successors, (174), 26 states have call predecessors, (174), 26 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-28 02:19:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1629 transitions. [2024-11-28 02:19:59,199 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1629 transitions. Word has length 221 [2024-11-28 02:19:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:59,200 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1629 transitions. [2024-11-28 02:19:59,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-28 02:19:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1629 transitions. [2024-11-28 02:19:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:19:59,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:59,202 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:59,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:19:59,202 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:19:59,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash -301743279, now seen corresponding path program 1 times [2024-11-28 02:19:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:19:59,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10744825] [2024-11-28 02:19:59,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:19:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:20:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:02,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10744825] [2024-11-28 02:20:02,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10744825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:02,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:20:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104340455] [2024-11-28 02:20:02,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:02,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:20:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:02,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:20:02,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:20:02,860 INFO L87 Difference]: Start difference. First operand 1098 states and 1629 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:20:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:06,137 INFO L93 Difference]: Finished difference Result 2272 states and 3448 transitions. [2024-11-28 02:20:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:20:06,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-28 02:20:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:06,145 INFO L225 Difference]: With dead ends: 2272 [2024-11-28 02:20:06,145 INFO L226 Difference]: Without dead ends: 2050 [2024-11-28 02:20:06,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:20:06,147 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 696 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:06,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1042 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 02:20:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2024-11-28 02:20:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1580. [2024-11-28 02:20:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1338 states have (on average 1.4715994020926757) internal successors, (1969), 1340 states have internal predecessors, (1969), 212 states have call successors, (212), 29 states have call predecessors, (212), 29 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 02:20:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2393 transitions. [2024-11-28 02:20:06,278 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2393 transitions. Word has length 221 [2024-11-28 02:20:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:06,278 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2393 transitions. [2024-11-28 02:20:06,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:20:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2393 transitions. [2024-11-28 02:20:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:20:06,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:06,281 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:06,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:20:06,281 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:20:06,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:06,282 INFO L85 PathProgramCache]: Analyzing trace with hash 497292942, now seen corresponding path program 1 times [2024-11-28 02:20:06,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:06,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713213289] [2024-11-28 02:20:06,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:06,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:20:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713213289] [2024-11-28 02:20:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713213289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:24,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:20:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454758842] [2024-11-28 02:20:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:24,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:20:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:24,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:20:24,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:20:24,516 INFO L87 Difference]: Start difference. First operand 1580 states and 2393 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:20:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:28,701 INFO L93 Difference]: Finished difference Result 3282 states and 4959 transitions. [2024-11-28 02:20:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:20:28,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-28 02:20:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:28,705 INFO L225 Difference]: With dead ends: 3282 [2024-11-28 02:20:28,706 INFO L226 Difference]: Without dead ends: 2032 [2024-11-28 02:20:28,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:20:28,708 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 490 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:28,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1304 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:20:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2024-11-28 02:20:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1524. [2024-11-28 02:20:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1282 states have (on average 1.465678627145086) internal successors, (1879), 1284 states have internal predecessors, (1879), 212 states have call successors, (212), 29 states have call predecessors, (212), 29 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 02:20:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2303 transitions. [2024-11-28 02:20:28,805 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2303 transitions. Word has length 221 [2024-11-28 02:20:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:28,805 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 2303 transitions. [2024-11-28 02:20:28,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:20:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2303 transitions. [2024-11-28 02:20:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:20:28,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:28,807 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:28,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:20:28,807 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:20:28,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash -442291889, now seen corresponding path program 1 times [2024-11-28 02:20:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:28,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640664146] [2024-11-28 02:20:28,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:28,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:20:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640664146] [2024-11-28 02:20:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640664146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 02:20:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808541031] [2024-11-28 02:20:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:36,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:20:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:36,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:20:36,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:20:36,925 INFO L87 Difference]: Start difference. First operand 1524 states and 2303 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2024-11-28 02:20:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:56,163 INFO L93 Difference]: Finished difference Result 2716 states and 4134 transitions. [2024-11-28 02:20:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:20:56,164 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 221 [2024-11-28 02:20:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:56,171 INFO L225 Difference]: With dead ends: 2716 [2024-11-28 02:20:56,171 INFO L226 Difference]: Without dead ends: 2494 [2024-11-28 02:20:56,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:20:56,173 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 1209 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:56,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1259 Invalid, 2617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-28 02:20:56,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2024-11-28 02:20:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1802. [2024-11-28 02:20:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1553 states have (on average 1.4822923374114616) internal successors, (2302), 1557 states have internal predecessors, (2302), 216 states have call successors, (216), 32 states have call predecessors, (216), 32 states have return successors, (216), 212 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-28 02:20:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2734 transitions. [2024-11-28 02:20:56,283 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2734 transitions. Word has length 221 [2024-11-28 02:20:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:56,283 INFO L471 AbstractCegarLoop]: Abstraction has 1802 states and 2734 transitions. [2024-11-28 02:20:56,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2024-11-28 02:20:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2734 transitions. [2024-11-28 02:20:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 02:20:56,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:56,286 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:56,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:20:56,286 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:20:56,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1858530701, now seen corresponding path program 1 times [2024-11-28 02:20:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:56,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068871513] [2024-11-28 02:20:56,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:56,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-28 02:21:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068871513] [2024-11-28 02:21:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068871513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:01,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:21:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192307178] [2024-11-28 02:21:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:01,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:21:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:01,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:21:01,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:21:01,111 INFO L87 Difference]: Start difference. First operand 1802 states and 2734 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:21:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:08,135 INFO L93 Difference]: Finished difference Result 3067 states and 4675 transitions. [2024-11-28 02:21:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:21:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-28 02:21:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:08,143 INFO L225 Difference]: With dead ends: 3067 [2024-11-28 02:21:08,143 INFO L226 Difference]: Without dead ends: 2653 [2024-11-28 02:21:08,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:21:08,146 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 837 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:08,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1580 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:21:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2024-11-28 02:21:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 1832. [2024-11-28 02:21:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1583 states have (on average 1.4838913455464309) internal successors, (2349), 1587 states have internal predecessors, (2349), 216 states have call successors, (216), 32 states have call predecessors, (216), 32 states have return successors, (216), 212 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-28 02:21:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2781 transitions. [2024-11-28 02:21:08,318 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2781 transitions. Word has length 221 [2024-11-28 02:21:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:08,319 INFO L471 AbstractCegarLoop]: Abstraction has 1832 states and 2781 transitions. [2024-11-28 02:21:08,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 02:21:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2781 transitions. [2024-11-28 02:21:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-28 02:21:08,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:08,320 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:08,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:21:08,320 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:08,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1583147578, now seen corresponding path program 1 times [2024-11-28 02:21:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891974065] [2024-11-28 02:21:08,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat