./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/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 f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:52:41,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:52:41,781 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:52:41,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:52:41,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:52:41,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:52:41,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:52:41,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:52:41,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:52:41,835 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:52:41,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:52:41,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:52:41,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:52:41,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:52:41,835 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:52:41,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:52:41,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:52:41,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:52:41,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:52:41,839 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:52:41,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:41,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:41,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:41,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:52:41,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:52:41,841 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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/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 -> f6efe7ecfa2f8653fe2834057cfe06e476c7bb5b1002416a0f080ee317604656 [2024-11-28 02:52:42,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:52:42,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:52:42,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:52:42,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:52:42,185 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:52:42,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2024-11-28 02:52:45,184 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/data/f92704e1c/f6f765bd891849d98ce694114009c891/FLAG520a269e3 [2024-11-28 02:52:45,466 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:52:45,467 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i [2024-11-28 02:52:45,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/data/f92704e1c/f6f765bd891849d98ce694114009c891/FLAG520a269e3 [2024-11-28 02:52:45,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/data/f92704e1c/f6f765bd891849d98ce694114009c891 [2024-11-28 02:52:45,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:52:45,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:52:45,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:45,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:52:45,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:52:45,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29260e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45, skipping insertion in model container [2024-11-28 02:52:45,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:52:45,671 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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i[916,929] [2024-11-28 02:52:45,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:45,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:52:45,798 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_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-57.i[916,929] [2024-11-28 02:52:45,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:45,868 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:52:45,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45 WrapperNode [2024-11-28 02:52:45,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:45,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:45,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:52:45,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:52:45,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,939 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 255 [2024-11-28 02:52:45,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:45,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:52:45,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:52:45,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:52:45,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,981 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 02:52:45,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,996 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:45,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:46,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:46,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:46,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:46,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:52:46,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:52:46,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:52:46,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:52:46,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (1/1) ... [2024-11-28 02:52:46,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:46,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:52:46,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:52:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:52:46,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:52:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:52:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:52:46,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:52:46,216 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:52:46,218 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:52:47,008 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-28 02:52:47,008 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:52:47,025 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:52:47,025 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:52:47,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:47 BoogieIcfgContainer [2024-11-28 02:52:47,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:52:47,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:52:47,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:52:47,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:52:47,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:45" (1/3) ... [2024-11-28 02:52:47,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3e933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:47, skipping insertion in model container [2024-11-28 02:52:47,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:45" (2/3) ... [2024-11-28 02:52:47,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb3e933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:47, skipping insertion in model container [2024-11-28 02:52:47,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:47" (3/3) ... [2024-11-28 02:52:47,038 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-57.i [2024-11-28 02:52:47,056 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:52:47,058 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-57.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:52:47,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:52:47,139 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;@721c9bc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:52:47,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:52:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 73 states have internal predecessors, (105), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 02:52:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-28 02:52:47,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:47,163 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:47,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1720000127, now seen corresponding path program 1 times [2024-11-28 02:52:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:47,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607329012] [2024-11-28 02:52:47,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 02:52:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:47,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607329012] [2024-11-28 02:52:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607329012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835778453] [2024-11-28 02:52:47,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:47,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:47,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:47,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:52:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:47,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:52:47,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 02:52:48,037 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835778453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:48,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:48,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:52:48,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117890059] [2024-11-28 02:52:48,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:52:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:48,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:52:48,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:52:48,072 INFO L87 Difference]: Start difference. First operand has 111 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 73 states have internal predecessors, (105), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:52:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:48,109 INFO L93 Difference]: Finished difference Result 215 states and 384 transitions. [2024-11-28 02:52:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:52:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2024-11-28 02:52:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:48,119 INFO L225 Difference]: With dead ends: 215 [2024-11-28 02:52:48,119 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 02:52:48,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 228 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 02:52:48,125 INFO L435 NwaCegarLoop]: 170 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, 170 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 02:52:48,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 02:52:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-28 02:52:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 02:52:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 170 transitions. [2024-11-28 02:52:48,181 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 170 transitions. Word has length 227 [2024-11-28 02:52:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:48,182 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 170 transitions. [2024-11-28 02:52:48,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:52:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 170 transitions. [2024-11-28 02:52:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-28 02:52:48,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:48,192 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:48,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:52:48,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:52:48,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:48,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1622120201, now seen corresponding path program 1 times [2024-11-28 02:52:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586817607] [2024-11-28 02:52:48,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:53:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:10,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586817607] [2024-11-28 02:53:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586817607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:53:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906491588] [2024-11-28 02:53:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:10,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:53:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:10,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:53:10,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:53:10,185 INFO L87 Difference]: Start difference. First operand 107 states and 170 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 02:53:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:13,170 INFO L93 Difference]: Finished difference Result 488 states and 771 transitions. [2024-11-28 02:53:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:53:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 227 [2024-11-28 02:53:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:13,178 INFO L225 Difference]: With dead ends: 488 [2024-11-28 02:53:13,182 INFO L226 Difference]: Without dead ends: 384 [2024-11-28 02:53:13,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:53:13,185 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1052 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:13,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 963 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:53:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-28 02:53:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 237. [2024-11-28 02:53:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.3918918918918919) internal successors, (206), 149 states have internal predecessors, (206), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:53:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 376 transitions. [2024-11-28 02:53:13,259 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 376 transitions. Word has length 227 [2024-11-28 02:53:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:13,261 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 376 transitions. [2024-11-28 02:53:13,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 02:53:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 376 transitions. [2024-11-28 02:53:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-28 02:53:13,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:13,265 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:13,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:53:13,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:13,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1651778741, now seen corresponding path program 1 times [2024-11-28 02:53:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:13,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742251454] [2024-11-28 02:53:13,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:53:45,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:45,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742251454] [2024-11-28 02:53:45,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742251454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:45,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:45,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:53:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327664726] [2024-11-28 02:53:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:45,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:53:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:45,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:53:45,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:53:45,057 INFO L87 Difference]: Start difference. First operand 237 states and 376 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:53:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:48,263 INFO L93 Difference]: Finished difference Result 531 states and 832 transitions. [2024-11-28 02:53:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:53:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 227 [2024-11-28 02:53:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:48,272 INFO L225 Difference]: With dead ends: 531 [2024-11-28 02:53:48,272 INFO L226 Difference]: Without dead ends: 427 [2024-11-28 02:53:48,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:53:48,274 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 389 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:48,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 805 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:53:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-28 02:53:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 250. [2024-11-28 02:53:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 161 states have (on average 1.4161490683229814) internal successors, (228), 162 states have internal predecessors, (228), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:53:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 398 transitions. [2024-11-28 02:53:48,346 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 398 transitions. Word has length 227 [2024-11-28 02:53:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:48,347 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 398 transitions. [2024-11-28 02:53:48,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:53:48,348 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 398 transitions. [2024-11-28 02:53:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:53:48,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:48,354 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:48,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:53:48,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:48,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:48,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1784853951, now seen corresponding path program 1 times [2024-11-28 02:53:48,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:48,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66778767] [2024-11-28 02:53:48,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:54:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66778767] [2024-11-28 02:54:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66778767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:54:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066181525] [2024-11-28 02:54:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:30,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:54:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:30,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:54:30,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:54:30,278 INFO L87 Difference]: Start difference. First operand 250 states and 398 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:54:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:40,752 INFO L93 Difference]: Finished difference Result 553 states and 866 transitions. [2024-11-28 02:54:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:54:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 228 [2024-11-28 02:54:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:40,759 INFO L225 Difference]: With dead ends: 553 [2024-11-28 02:54:40,759 INFO L226 Difference]: Without dead ends: 421 [2024-11-28 02:54:40,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:54:40,761 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 768 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:40,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 950 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 02:54:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-28 02:54:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 251. [2024-11-28 02:54:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 162 states have (on average 1.4197530864197532) internal successors, (230), 163 states have internal predecessors, (230), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:54:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 400 transitions. [2024-11-28 02:54:40,808 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 400 transitions. Word has length 228 [2024-11-28 02:54:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:40,811 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 400 transitions. [2024-11-28 02:54:40,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:54:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 400 transitions. [2024-11-28 02:54:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:54:40,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:40,815 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:40,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:54:40,815 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:40,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1775157893, now seen corresponding path program 1 times [2024-11-28 02:54:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227874850] [2024-11-28 02:54:40,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:55:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227874850] [2024-11-28 02:55:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227874850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:18,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:18,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:55:18,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725285163] [2024-11-28 02:55:18,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:18,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:55:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:18,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:55:18,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:55:18,047 INFO L87 Difference]: Start difference. First operand 251 states and 400 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:55:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:55:23,938 INFO L93 Difference]: Finished difference Result 522 states and 822 transitions. [2024-11-28 02:55:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:55:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:55:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:55:23,943 INFO L225 Difference]: With dead ends: 522 [2024-11-28 02:55:23,943 INFO L226 Difference]: Without dead ends: 418 [2024-11-28 02:55:23,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:55:23,945 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 534 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:55:23,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 982 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:55:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-28 02:55:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 252. [2024-11-28 02:55:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 163 states have (on average 1.4233128834355828) internal successors, (232), 164 states have internal predecessors, (232), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:55:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 402 transitions. [2024-11-28 02:55:23,990 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 402 transitions. Word has length 228 [2024-11-28 02:55:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:55:23,990 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 402 transitions. [2024-11-28 02:55:23,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:55:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 402 transitions. [2024-11-28 02:55:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:55:23,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:55:23,994 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:23,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:55:23,994 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:55:23,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:55:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 921765443, now seen corresponding path program 1 times [2024-11-28 02:55:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:55:23,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973741902] [2024-11-28 02:55:23,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:55:23,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:55:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:55:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:55:59,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:55:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973741902] [2024-11-28 02:55:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973741902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:55:59,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:55:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:55:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908752169] [2024-11-28 02:55:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:55:59,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:55:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:55:59,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:55:59,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:55:59,270 INFO L87 Difference]: Start difference. First operand 252 states and 402 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:56:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:08,797 INFO L93 Difference]: Finished difference Result 563 states and 886 transitions. [2024-11-28 02:56:08,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:56:08,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 228 [2024-11-28 02:56:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:08,802 INFO L225 Difference]: With dead ends: 563 [2024-11-28 02:56:08,803 INFO L226 Difference]: Without dead ends: 431 [2024-11-28 02:56:08,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:56:08,809 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 919 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:08,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 780 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:56:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-28 02:56:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 262. [2024-11-28 02:56:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 173 states have (on average 1.4450867052023122) internal successors, (250), 174 states have internal predecessors, (250), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:56:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 420 transitions. [2024-11-28 02:56:08,862 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 420 transitions. Word has length 228 [2024-11-28 02:56:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:08,863 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 420 transitions. [2024-11-28 02:56:08,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 02:56:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 420 transitions. [2024-11-28 02:56:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:56:08,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:08,867 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:08,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:56:08,867 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:08,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 931461501, now seen corresponding path program 1 times [2024-11-28 02:56:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725797957] [2024-11-28 02:56:08,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:56:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725797957] [2024-11-28 02:56:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725797957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:40,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:40,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:56:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536316795] [2024-11-28 02:56:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:40,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:56:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:40,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:56:40,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:56:40,857 INFO L87 Difference]: Start difference. First operand 262 states and 420 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:56:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:43,221 INFO L93 Difference]: Finished difference Result 505 states and 796 transitions. [2024-11-28 02:56:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:56:43,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:56:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:43,226 INFO L225 Difference]: With dead ends: 505 [2024-11-28 02:56:43,226 INFO L226 Difference]: Without dead ends: 401 [2024-11-28 02:56:43,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:56:43,228 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 295 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:43,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 611 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:56:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-28 02:56:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 267. [2024-11-28 02:56:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 178 states have (on average 1.4550561797752808) internal successors, (259), 179 states have internal predecessors, (259), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:56:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 429 transitions. [2024-11-28 02:56:43,275 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 429 transitions. Word has length 228 [2024-11-28 02:56:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:43,276 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 429 transitions. [2024-11-28 02:56:43,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:56:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 429 transitions. [2024-11-28 02:56:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:56:43,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:43,282 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:43,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:56:43,282 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:43,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1504244451, now seen corresponding path program 1 times [2024-11-28 02:56:43,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:43,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140745212] [2024-11-28 02:56:43,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:56:44,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:44,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140745212] [2024-11-28 02:56:44,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140745212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:44,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:44,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:56:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612441208] [2024-11-28 02:56:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:44,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:56:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:44,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:56:44,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:56:44,033 INFO L87 Difference]: Start difference. First operand 267 states and 429 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:56:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:44,668 INFO L93 Difference]: Finished difference Result 456 states and 734 transitions. [2024-11-28 02:56:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:56:44,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:56:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:44,673 INFO L225 Difference]: With dead ends: 456 [2024-11-28 02:56:44,673 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 02:56:44,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:56:44,675 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 182 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:44,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 656 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:56:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 02:56:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 274. [2024-11-28 02:56:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 185 states have (on average 1.4648648648648648) internal successors, (271), 186 states have internal predecessors, (271), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:56:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 441 transitions. [2024-11-28 02:56:44,719 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 441 transitions. Word has length 228 [2024-11-28 02:56:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:44,719 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 441 transitions. [2024-11-28 02:56:44,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:56:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 441 transitions. [2024-11-28 02:56:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:56:44,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:44,726 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:44,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:56:44,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:44,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1769654491, now seen corresponding path program 1 times [2024-11-28 02:56:44,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:44,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191029469] [2024-11-28 02:56:44,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:44,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:57:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:57:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:57:15,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191029469] [2024-11-28 02:57:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191029469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:57:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:57:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:57:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092865176] [2024-11-28 02:57:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:57:15,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:57:15,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:57:15,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:57:15,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:57:15,652 INFO L87 Difference]: Start difference. First operand 274 states and 441 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:57:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:57:24,571 INFO L93 Difference]: Finished difference Result 604 states and 954 transitions. [2024-11-28 02:57:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:57:24,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:57:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:57:24,577 INFO L225 Difference]: With dead ends: 604 [2024-11-28 02:57:24,577 INFO L226 Difference]: Without dead ends: 483 [2024-11-28 02:57:24,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:57:24,579 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 510 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:57:24,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1087 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 02:57:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-28 02:57:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 312. [2024-11-28 02:57:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 220 states have (on average 1.4727272727272727) internal successors, (324), 222 states have internal predecessors, (324), 87 states have call successors, (87), 4 states have call predecessors, (87), 4 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-28 02:57:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 498 transitions. [2024-11-28 02:57:24,662 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 498 transitions. Word has length 228 [2024-11-28 02:57:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:57:24,667 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 498 transitions. [2024-11-28 02:57:24,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:57:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 498 transitions. [2024-11-28 02:57:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:57:24,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:24,674 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:57:24,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:57:24,675 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:24,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2051555043, now seen corresponding path program 1 times [2024-11-28 02:57:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162885170] [2024-11-28 02:57:24,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:24,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:57:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:58:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162885170] [2024-11-28 02:58:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162885170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:12,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:58:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398773706] [2024-11-28 02:58:12,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:12,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:58:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:12,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:58:12,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:58:12,334 INFO L87 Difference]: Start difference. First operand 312 states and 498 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:18,806 INFO L93 Difference]: Finished difference Result 613 states and 968 transitions. [2024-11-28 02:58:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:58:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:58:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:18,812 INFO L225 Difference]: With dead ends: 613 [2024-11-28 02:58:18,812 INFO L226 Difference]: Without dead ends: 492 [2024-11-28 02:58:18,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:58:18,814 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 414 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:18,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1074 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:58:18,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-28 02:58:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 312. [2024-11-28 02:58:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 220 states have (on average 1.4727272727272727) internal successors, (324), 222 states have internal predecessors, (324), 87 states have call successors, (87), 4 states have call predecessors, (87), 4 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-28 02:58:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 498 transitions. [2024-11-28 02:58:18,870 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 498 transitions. Word has length 228 [2024-11-28 02:58:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:18,871 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 498 transitions. [2024-11-28 02:58:18,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 498 transitions. [2024-11-28 02:58:18,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:58:18,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:18,875 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:18,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:58:18,875 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:18,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash -482793859, now seen corresponding path program 1 times [2024-11-28 02:58:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307476785] [2024-11-28 02:58:18,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:58:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307476785] [2024-11-28 02:58:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307476785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:19,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951749704] [2024-11-28 02:58:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:19,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:19,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:19,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:19,004 INFO L87 Difference]: Start difference. First operand 312 states and 498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:19,116 INFO L93 Difference]: Finished difference Result 771 states and 1226 transitions. [2024-11-28 02:58:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:58:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:19,121 INFO L225 Difference]: With dead ends: 771 [2024-11-28 02:58:19,122 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 02:58:19,123 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 02:58:19,124 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 98 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:19,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 318 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:58:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 02:58:19,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2024-11-28 02:58:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 400 states have (on average 1.475) internal successors, (590), 404 states have internal predecessors, (590), 138 states have call successors, (138), 7 states have call predecessors, (138), 7 states have return successors, (138), 134 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-28 02:58:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 866 transitions. [2024-11-28 02:58:19,232 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 866 transitions. Word has length 228 [2024-11-28 02:58:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:19,232 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 866 transitions. [2024-11-28 02:58:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 866 transitions. [2024-11-28 02:58:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:58:19,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:19,236 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:19,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:58:19,236 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:19,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2123229695, now seen corresponding path program 1 times [2024-11-28 02:58:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:19,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617812076] [2024-11-28 02:58:19,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:19,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:58:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617812076] [2024-11-28 02:58:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617812076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:58:19,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:58:19,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:58:19,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132760667] [2024-11-28 02:58:19,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:58:19,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:58:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:58:19,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:58:19,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:58:19,423 INFO L87 Difference]: Start difference. First operand 546 states and 866 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:58:19,533 INFO L93 Difference]: Finished difference Result 990 states and 1579 transitions. [2024-11-28 02:58:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:58:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 228 [2024-11-28 02:58:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:58:19,540 INFO L225 Difference]: With dead ends: 990 [2024-11-28 02:58:19,540 INFO L226 Difference]: Without dead ends: 754 [2024-11-28 02:58:19,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:58:19,543 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 92 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:58:19,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 371 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:58:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-28 02:58:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2024-11-28 02:58:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 532 states have (on average 1.4586466165413534) internal successors, (776), 536 states have internal predecessors, (776), 210 states have call successors, (210), 9 states have call predecessors, (210), 9 states have return successors, (210), 206 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 02:58:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1196 transitions. [2024-11-28 02:58:19,668 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1196 transitions. Word has length 228 [2024-11-28 02:58:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:58:19,669 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1196 transitions. [2024-11-28 02:58:19,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 02:58:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1196 transitions. [2024-11-28 02:58:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:58:19,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:58:19,672 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:19,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:58:19,673 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:58:19,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:58:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1889837049, now seen corresponding path program 1 times [2024-11-28 02:58:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:58:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674684484] [2024-11-28 02:58:19,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:59:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 02:59:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:59:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674684484] [2024-11-28 02:59:14,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674684484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:59:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:59:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:59:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483944246] [2024-11-28 02:59:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:59:14,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:59:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:59:14,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:59:14,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:59:14,803 INFO L87 Difference]: Start difference. First operand 752 states and 1196 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 02:59:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:59:22,153 INFO L93 Difference]: Finished difference Result 1524 states and 2401 transitions. [2024-11-28 02:59:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:59:22,154 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 228 [2024-11-28 02:59:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:59:22,162 INFO L225 Difference]: With dead ends: 1524 [2024-11-28 02:59:22,162 INFO L226 Difference]: Without dead ends: 1090 [2024-11-28 02:59:22,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:59:22,166 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 805 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:59:22,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 765 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:59:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2024-11-28 02:59:22,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 764. [2024-11-28 02:59:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 544 states have (on average 1.4613970588235294) internal successors, (795), 548 states have internal predecessors, (795), 210 states have call successors, (210), 9 states have call predecessors, (210), 9 states have return successors, (210), 206 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 02:59:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1215 transitions. [2024-11-28 02:59:22,288 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1215 transitions. Word has length 228 [2024-11-28 02:59:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:59:22,289 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1215 transitions. [2024-11-28 02:59:22,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 02:59:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1215 transitions. [2024-11-28 02:59:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 02:59:22,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:59:22,292 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:22,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:59:22,293 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:59:22,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:59:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1631671611, now seen corresponding path program 1 times [2024-11-28 02:59:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:59:22,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360599372] [2024-11-28 02:59:22,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:59:22,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:59:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:00:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360599372] [2024-11-28 03:00:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360599372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:00:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503338706] [2024-11-28 03:00:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:17,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:00:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:17,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:00:17,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:00:17,999 INFO L87 Difference]: Start difference. First operand 764 states and 1215 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 03:00:28,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:28,406 INFO L93 Difference]: Finished difference Result 1477 states and 2330 transitions. [2024-11-28 03:00:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:00:28,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 228 [2024-11-28 03:00:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:28,419 INFO L225 Difference]: With dead ends: 1477 [2024-11-28 03:00:28,419 INFO L226 Difference]: Without dead ends: 1043 [2024-11-28 03:00:28,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:00:28,423 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 629 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:28,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 995 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 03:00:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-28 03:00:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 764. [2024-11-28 03:00:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 544 states have (on average 1.4613970588235294) internal successors, (795), 548 states have internal predecessors, (795), 210 states have call successors, (210), 9 states have call predecessors, (210), 9 states have return successors, (210), 206 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 03:00:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1215 transitions. [2024-11-28 03:00:28,540 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1215 transitions. Word has length 228 [2024-11-28 03:00:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:28,541 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1215 transitions. [2024-11-28 03:00:28,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-28 03:00:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1215 transitions. [2024-11-28 03:00:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 03:00:28,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:28,544 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:28,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:00:28,544 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:28,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1384061893, now seen corresponding path program 1 times [2024-11-28 03:00:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713682195] [2024-11-28 03:00:28,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:01:12,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:12,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713682195] [2024-11-28 03:01:12,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713682195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:01:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694238578] [2024-11-28 03:01:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:12,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:01:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:12,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:01:12,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:01:12,073 INFO L87 Difference]: Start difference. First operand 764 states and 1215 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 03:01:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:18,051 INFO L93 Difference]: Finished difference Result 1617 states and 2528 transitions. [2024-11-28 03:01:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:01:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 228 [2024-11-28 03:01:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:18,058 INFO L225 Difference]: With dead ends: 1617 [2024-11-28 03:01:18,059 INFO L226 Difference]: Without dead ends: 1183 [2024-11-28 03:01:18,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:01:18,061 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 1031 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:18,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 781 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:01:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-11-28 03:01:18,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 767. [2024-11-28 03:01:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 547 states have (on average 1.4643510054844606) internal successors, (801), 551 states have internal predecessors, (801), 210 states have call successors, (210), 9 states have call predecessors, (210), 9 states have return successors, (210), 206 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 03:01:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1221 transitions. [2024-11-28 03:01:18,170 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1221 transitions. Word has length 228 [2024-11-28 03:01:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:18,171 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1221 transitions. [2024-11-28 03:01:18,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-28 03:01:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1221 transitions. [2024-11-28 03:01:18,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:01:18,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:18,173 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:18,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:01:18,173 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:18,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1148753558, now seen corresponding path program 1 times [2024-11-28 03:01:18,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:18,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972027304] [2024-11-28 03:01:18,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:18,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:01:31,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972027304] [2024-11-28 03:01:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972027304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:01:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114250582] [2024-11-28 03:01:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:31,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:01:31,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:31,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:01:31,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:01:31,886 INFO L87 Difference]: Start difference. First operand 767 states and 1221 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:01:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:34,330 INFO L93 Difference]: Finished difference Result 1607 states and 2536 transitions. [2024-11-28 03:01:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:01:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:01:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:34,338 INFO L225 Difference]: With dead ends: 1607 [2024-11-28 03:01:34,338 INFO L226 Difference]: Without dead ends: 1368 [2024-11-28 03:01:34,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:01:34,341 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 667 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:34,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 942 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:01:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-28 03:01:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 780. [2024-11-28 03:01:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 560 states have (on average 1.4714285714285715) internal successors, (824), 564 states have internal predecessors, (824), 210 states have call successors, (210), 9 states have call predecessors, (210), 9 states have return successors, (210), 206 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-28 03:01:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1244 transitions. [2024-11-28 03:01:34,467 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1244 transitions. Word has length 229 [2024-11-28 03:01:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:34,468 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 1244 transitions. [2024-11-28 03:01:34,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:01:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1244 transitions. [2024-11-28 03:01:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:01:34,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:34,471 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:34,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:01:34,471 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:34,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1430654110, now seen corresponding path program 1 times [2024-11-28 03:01:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:34,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696641612] [2024-11-28 03:01:34,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:34,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:01:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696641612] [2024-11-28 03:01:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696641612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:01:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:01:34,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:01:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145105959] [2024-11-28 03:01:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:01:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:01:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:34,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:01:34,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:01:34,803 INFO L87 Difference]: Start difference. First operand 780 states and 1244 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:01:35,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:35,078 INFO L93 Difference]: Finished difference Result 1173 states and 1854 transitions. [2024-11-28 03:01:35,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:01:35,079 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:01:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:35,085 INFO L225 Difference]: With dead ends: 1173 [2024-11-28 03:01:35,085 INFO L226 Difference]: Without dead ends: 1039 [2024-11-28 03:01:35,087 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 03:01:35,087 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 129 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:35,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 602 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2024-11-28 03:01:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 994. [2024-11-28 03:01:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 738 states have (on average 1.4742547425474255) internal successors, (1088), 746 states have internal predecessors, (1088), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:01:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1572 transitions. [2024-11-28 03:01:35,232 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1572 transitions. Word has length 229 [2024-11-28 03:01:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:35,232 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1572 transitions. [2024-11-28 03:01:35,233 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, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:01:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1572 transitions. [2024-11-28 03:01:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:01:35,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:35,235 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:35,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:01:35,236 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:01:35,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash -258289632, now seen corresponding path program 1 times [2024-11-28 03:01:35,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:35,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704222359] [2024-11-28 03:01:35,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:01:35,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:02:00,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:00,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704222359] [2024-11-28 03:02:00,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704222359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:00,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:00,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:02:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502870578] [2024-11-28 03:02:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:00,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:02:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:00,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:02:00,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:02:00,123 INFO L87 Difference]: Start difference. First operand 994 states and 1572 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:03,931 INFO L93 Difference]: Finished difference Result 2132 states and 3336 transitions. [2024-11-28 03:02:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:02:03,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:02:03,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:03,939 INFO L225 Difference]: With dead ends: 2132 [2024-11-28 03:02:03,940 INFO L226 Difference]: Without dead ends: 1837 [2024-11-28 03:02:03,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:02:03,942 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 659 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:03,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 825 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:02:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2024-11-28 03:02:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1006. [2024-11-28 03:02:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 750 states have (on average 1.476) internal successors, (1107), 758 states have internal predecessors, (1107), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:02:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1591 transitions. [2024-11-28 03:02:04,093 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1591 transitions. Word has length 229 [2024-11-28 03:02:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:04,094 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1591 transitions. [2024-11-28 03:02:04,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1591 transitions. [2024-11-28 03:02:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:02:04,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:04,096 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:04,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:02:04,097 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:04,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1279357986, now seen corresponding path program 1 times [2024-11-28 03:02:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:04,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889144443] [2024-11-28 03:02:04,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:02:33,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889144443] [2024-11-28 03:02:33,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889144443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:33,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:33,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:02:33,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378043769] [2024-11-28 03:02:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:33,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:02:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:33,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:02:33,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:02:33,516 INFO L87 Difference]: Start difference. First operand 1006 states and 1591 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:38,211 INFO L93 Difference]: Finished difference Result 2071 states and 3218 transitions. [2024-11-28 03:02:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:02:38,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:02:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:38,220 INFO L225 Difference]: With dead ends: 2071 [2024-11-28 03:02:38,220 INFO L226 Difference]: Without dead ends: 1776 [2024-11-28 03:02:38,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:02:38,222 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 400 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:38,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 796 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:02:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2024-11-28 03:02:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1012. [2024-11-28 03:02:38,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 756 states have (on average 1.4788359788359788) internal successors, (1118), 764 states have internal predecessors, (1118), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:02:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1602 transitions. [2024-11-28 03:02:38,385 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1602 transitions. Word has length 229 [2024-11-28 03:02:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:38,385 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1602 transitions. [2024-11-28 03:02:38,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1602 transitions. [2024-11-28 03:02:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:02:38,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:38,388 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:38,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:02:38,389 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:38,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1021192548, now seen corresponding path program 1 times [2024-11-28 03:02:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778171983] [2024-11-28 03:02:38,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:38,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:02:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778171983] [2024-11-28 03:02:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778171983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:57,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:02:57,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476050834] [2024-11-28 03:02:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:57,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:02:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:57,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:02:57,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:02:57,317 INFO L87 Difference]: Start difference. First operand 1012 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:59,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:59,550 INFO L93 Difference]: Finished difference Result 2163 states and 3384 transitions. [2024-11-28 03:02:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:02:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:02:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:59,559 INFO L225 Difference]: With dead ends: 2163 [2024-11-28 03:02:59,559 INFO L226 Difference]: Without dead ends: 1574 [2024-11-28 03:02:59,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:02:59,562 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 326 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:59,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 617 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:02:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2024-11-28 03:02:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1017. [2024-11-28 03:02:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 761 states have (on average 1.4783180026281209) internal successors, (1125), 769 states have internal predecessors, (1125), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:02:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1609 transitions. [2024-11-28 03:02:59,719 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1609 transitions. Word has length 229 [2024-11-28 03:02:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:59,719 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 1609 transitions. [2024-11-28 03:02:59,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:02:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1609 transitions. [2024-11-28 03:02:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:02:59,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:59,722 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:59,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:02:59,722 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:59,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash 551128354, now seen corresponding path program 1 times [2024-11-28 03:02:59,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:59,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341440248] [2024-11-28 03:02:59,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:03:50,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:50,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341440248] [2024-11-28 03:03:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341440248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:50,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:50,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:03:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739064553] [2024-11-28 03:03:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:50,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:03:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:50,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:03:50,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:03:50,087 INFO L87 Difference]: Start difference. First operand 1017 states and 1609 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:03:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:55,930 INFO L93 Difference]: Finished difference Result 2114 states and 3321 transitions. [2024-11-28 03:03:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:03:55,931 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:03:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:55,940 INFO L225 Difference]: With dead ends: 2114 [2024-11-28 03:03:55,940 INFO L226 Difference]: Without dead ends: 1637 [2024-11-28 03:03:55,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:03:55,943 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 732 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:55,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 870 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:03:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2024-11-28 03:03:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1017. [2024-11-28 03:03:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 761 states have (on average 1.4783180026281209) internal successors, (1125), 769 states have internal predecessors, (1125), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:03:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1609 transitions. [2024-11-28 03:03:56,122 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1609 transitions. Word has length 229 [2024-11-28 03:03:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:56,123 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 1609 transitions. [2024-11-28 03:03:56,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:03:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1609 transitions. [2024-11-28 03:03:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:03:56,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:56,125 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:56,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:03:56,126 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:56,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash 158101344, now seen corresponding path program 1 times [2024-11-28 03:03:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:56,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421545865] [2024-11-28 03:03:56,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:04:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421545865] [2024-11-28 03:04:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421545865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:04:51,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460454232] [2024-11-28 03:04:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:51,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:04:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:51,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:04:51,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:04:51,215 INFO L87 Difference]: Start difference. First operand 1017 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:04:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:56,227 INFO L93 Difference]: Finished difference Result 2082 states and 3269 transitions. [2024-11-28 03:04:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:04:56,228 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:04:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:56,235 INFO L225 Difference]: With dead ends: 2082 [2024-11-28 03:04:56,235 INFO L226 Difference]: Without dead ends: 1605 [2024-11-28 03:04:56,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:04:56,239 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 802 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:56,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 813 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 03:04:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-11-28 03:04:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 985. [2024-11-28 03:04:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 729 states have (on average 1.4718792866941015) internal successors, (1073), 737 states have internal predecessors, (1073), 242 states have call successors, (242), 13 states have call predecessors, (242), 13 states have return successors, (242), 234 states have call predecessors, (242), 242 states have call successors, (242) [2024-11-28 03:04:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1557 transitions. [2024-11-28 03:04:56,395 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1557 transitions. Word has length 229 [2024-11-28 03:04:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:56,395 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1557 transitions. [2024-11-28 03:04:56,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:04:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1557 transitions. [2024-11-28 03:04:56,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:04:56,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:56,398 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:56,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:04:56,398 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:56,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:56,398 INFO L85 PathProgramCache]: Analyzing trace with hash -904229998, now seen corresponding path program 1 times [2024-11-28 03:04:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648277742] [2024-11-28 03:04:56,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2024-11-28 03:04:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648277742] [2024-11-28 03:04:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648277742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302944275] [2024-11-28 03:04:56,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:56,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:56,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:56,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:04:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:56,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:04:56,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 915 proven. 81 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2024-11-28 03:04:57,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2024-11-28 03:04:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302944275] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:57,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:57,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 03:04:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596897818] [2024-11-28 03:04:57,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:57,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:04:57,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:57,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:04:57,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:04:57,896 INFO L87 Difference]: Start difference. First operand 985 states and 1557 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-28 03:04:58,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:58,340 INFO L93 Difference]: Finished difference Result 1829 states and 2861 transitions. [2024-11-28 03:04:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:04:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 229 [2024-11-28 03:04:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:58,347 INFO L225 Difference]: With dead ends: 1829 [2024-11-28 03:04:58,348 INFO L226 Difference]: Without dead ends: 959 [2024-11-28 03:04:58,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:04:58,351 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 132 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:58,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 340 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:04:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-28 03:04:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 854. [2024-11-28 03:04:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 597 states have (on average 1.3936348408710217) internal successors, (832), 603 states have internal predecessors, (832), 238 states have call successors, (238), 18 states have call predecessors, (238), 18 states have return successors, (238), 232 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-28 03:04:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1308 transitions. [2024-11-28 03:04:58,511 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1308 transitions. Word has length 229 [2024-11-28 03:04:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:58,511 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1308 transitions. [2024-11-28 03:04:58,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-28 03:04:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1308 transitions. [2024-11-28 03:04:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:04:58,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:58,514 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:58,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:04:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd2b3fc4-fb8a-4e1b-b0b6-2ecce9ab6e68/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:04:58,715 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:58,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2060912189, now seen corresponding path program 1 times [2024-11-28 03:04:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770984123] [2024-11-28 03:04:58,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:05:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770984123] [2024-11-28 03:05:51,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770984123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:51,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:51,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:05:51,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157592926] [2024-11-28 03:05:51,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:51,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:05:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:51,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:05:51,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:05:51,345 INFO L87 Difference]: Start difference. First operand 854 states and 1308 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:06:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:03,559 INFO L93 Difference]: Finished difference Result 1755 states and 2680 transitions. [2024-11-28 03:06:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:06:03,560 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 229 [2024-11-28 03:06:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:03,567 INFO L225 Difference]: With dead ends: 1755 [2024-11-28 03:06:03,568 INFO L226 Difference]: Without dead ends: 1458 [2024-11-28 03:06:03,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:06:03,570 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 452 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:03,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1050 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 03:06:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2024-11-28 03:06:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 879. [2024-11-28 03:06:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 622 states have (on average 1.4035369774919615) internal successors, (873), 628 states have internal predecessors, (873), 238 states have call successors, (238), 18 states have call predecessors, (238), 18 states have return successors, (238), 232 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-28 03:06:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1349 transitions. [2024-11-28 03:06:03,721 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1349 transitions. Word has length 229 [2024-11-28 03:06:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:03,722 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1349 transitions. [2024-11-28 03:06:03,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2024-11-28 03:06:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1349 transitions. [2024-11-28 03:06:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-28 03:06:03,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:03,724 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:03,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:06:03,725 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:03,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:03,725 INFO L85 PathProgramCache]: Analyzing trace with hash 781048511, now seen corresponding path program 1 times [2024-11-28 03:06:03,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:03,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520116483] [2024-11-28 03:06:03,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat