./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/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 a46946bc8d58053a534d6da71b639247988c56d2fd04364ce5eeef30b6223e75 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:09:41,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:09:41,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:09:41,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:09:41,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:09:41,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:09:41,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:09:41,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:09:41,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:09:41,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:09:41,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:09:41,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:09:41,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:09:41,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:09:41,525 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:09:41,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:09:41,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:09:41,528 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:41,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:41,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:41,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:09:41,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:09:41,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:09:41,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:09:41,531 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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/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 -> a46946bc8d58053a534d6da71b639247988c56d2fd04364ce5eeef30b6223e75 [2024-11-28 02:09:41,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:09:41,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:09:41,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:09:41,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:09:41,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:09:41,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.i [2024-11-28 02:09:44,869 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/data/14b0ef0bc/177fdd8f3c02479f8e60a474e72d9a90/FLAG45e37a02d [2024-11-28 02:09:45,254 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:09:45,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.i [2024-11-28 02:09:45,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/data/14b0ef0bc/177fdd8f3c02479f8e60a474e72d9a90/FLAG45e37a02d [2024-11-28 02:09:45,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/data/14b0ef0bc/177fdd8f3c02479f8e60a474e72d9a90 [2024-11-28 02:09:45,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:09:45,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:09:45,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:45,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:09:45,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:09:45,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:45,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f226f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45, skipping insertion in model container [2024-11-28 02:09:45,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:45,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:09:45,531 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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.i[916,929] [2024-11-28 02:09:45,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:45,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:09:45,758 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_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-64.i[916,929] [2024-11-28 02:09:45,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:45,911 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:09:45,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45 WrapperNode [2024-11-28 02:09:45,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:45,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:45,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:09:45,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:09:45,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:45,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,023 INFO L138 Inliner]: procedures = 26, calls = 98, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 560 [2024-11-28 02:09:46,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:46,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:09:46,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:09:46,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:09:46,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,086 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 02:09:46,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,113 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:09:46,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:09:46,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:09:46,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:09:46,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (1/1) ... [2024-11-28 02:09:46,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:46,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:09:46,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:09:46,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:09:46,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:09:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:09:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:09:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:09:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:09:46,366 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:09:46,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:09:47,538 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-28 02:09:47,538 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:09:47,562 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:09:47,562 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:09:47,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:47 BoogieIcfgContainer [2024-11-28 02:09:47,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:09:47,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:09:47,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:09:47,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:09:47,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:09:45" (1/3) ... [2024-11-28 02:09:47,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d0f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:47, skipping insertion in model container [2024-11-28 02:09:47,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:45" (2/3) ... [2024-11-28 02:09:47,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4d0f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:47, skipping insertion in model container [2024-11-28 02:09:47,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:47" (3/3) ... [2024-11-28 02:09:47,575 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-64.i [2024-11-28 02:09:47,592 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:09:47,598 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-64.i that has 2 procedures, 237 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:09:47,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:09:47,686 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;@31d8a8f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:09:47,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:09:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 149 states have (on average 1.516778523489933) internal successors, (226), 150 states have internal predecessors, (226), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:09:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-28 02:09:47,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:47,723 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:47,723 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:47,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1210074450, now seen corresponding path program 1 times [2024-11-28 02:09:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079733210] [2024-11-28 02:09:47,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-28 02:09:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079733210] [2024-11-28 02:09:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079733210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:48,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632041338] [2024-11-28 02:09:48,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:48,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:48,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:48,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:48,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:09:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:49,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:09:49,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2024-11-28 02:09:49,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632041338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:09:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140076575] [2024-11-28 02:09:49,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:49,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:09:49,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:49,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:09:49,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:09:49,266 INFO L87 Difference]: Start difference. First operand has 237 states, 149 states have (on average 1.516778523489933) internal successors, (226), 150 states have internal predecessors, (226), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2024-11-28 02:09:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:49,327 INFO L93 Difference]: Finished difference Result 467 states and 871 transitions. [2024-11-28 02:09:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:09:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) Word has length 523 [2024-11-28 02:09:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:49,338 INFO L225 Difference]: With dead ends: 467 [2024-11-28 02:09:49,339 INFO L226 Difference]: Without dead ends: 233 [2024-11-28 02:09:49,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 524 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 02:09:49,352 INFO L435 NwaCegarLoop]: 388 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, 388 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 02:09:49,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-28 02:09:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-28 02:09:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 146 states have (on average 1.4931506849315068) internal successors, (218), 146 states have internal predecessors, (218), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-28 02:09:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 388 transitions. [2024-11-28 02:09:49,463 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 388 transitions. Word has length 523 [2024-11-28 02:09:49,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:49,463 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 388 transitions. [2024-11-28 02:09:49,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 2 states have call successors, (85) [2024-11-28 02:09:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 388 transitions. [2024-11-28 02:09:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-28 02:09:49,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:49,488 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:49,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:09:49,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed109d5-7e71-4e7d-972f-07a6016fe9d7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:09:49,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:49,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1776599868, now seen corresponding path program 1 times [2024-11-28 02:09:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048652476] [2024-11-28 02:09:49,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:09:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048652476] [2024-11-28 02:09:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048652476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:09:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259426902] [2024-11-28 02:09:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:50,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:50,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:50,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:50,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:09:50,416 INFO L87 Difference]: Start difference. First operand 233 states and 388 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:50,512 INFO L93 Difference]: Finished difference Result 615 states and 1027 transitions. [2024-11-28 02:09:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 523 [2024-11-28 02:09:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:50,519 INFO L225 Difference]: With dead ends: 615 [2024-11-28 02:09:50,519 INFO L226 Difference]: Without dead ends: 385 [2024-11-28 02:09:50,521 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 02:09:50,522 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 236 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:50,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 839 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-28 02:09:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 382. [2024-11-28 02:09:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 256 states have (on average 1.52734375) internal successors, (391), 257 states have internal predecessors, (391), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-28 02:09:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 637 transitions. [2024-11-28 02:09:50,594 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 637 transitions. Word has length 523 [2024-11-28 02:09:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:50,596 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 637 transitions. [2024-11-28 02:09:50,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 637 transitions. [2024-11-28 02:09:50,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-28 02:09:50,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:50,607 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:50,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:09:50,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:50,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash 809011717, now seen corresponding path program 1 times [2024-11-28 02:09:50,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:50,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426176492] [2024-11-28 02:09:50,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:09:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426176492] [2024-11-28 02:09:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426176492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:51,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:51,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:09:51,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822872081] [2024-11-28 02:09:51,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:51,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:09:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:51,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:09:51,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:51,705 INFO L87 Difference]: Start difference. First operand 382 states and 637 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:52,414 INFO L93 Difference]: Finished difference Result 1489 states and 2483 transitions. [2024-11-28 02:09:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:52,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 524 [2024-11-28 02:09:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:52,426 INFO L225 Difference]: With dead ends: 1489 [2024-11-28 02:09:52,426 INFO L226 Difference]: Without dead ends: 1110 [2024-11-28 02:09:52,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:52,429 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 749 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:52,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 2023 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:09:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-28 02:09:52,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 390. [2024-11-28 02:09:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 264 states have (on average 1.5265151515151516) internal successors, (403), 265 states have internal predecessors, (403), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-28 02:09:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 649 transitions. [2024-11-28 02:09:52,591 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 649 transitions. Word has length 524 [2024-11-28 02:09:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:52,596 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 649 transitions. [2024-11-28 02:09:52,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 649 transitions. [2024-11-28 02:09:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-28 02:09:52,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:52,602 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:52,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:09:52,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:52,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -334909, now seen corresponding path program 1 times [2024-11-28 02:09:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:52,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521289506] [2024-11-28 02:09:52,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:09:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521289506] [2024-11-28 02:09:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521289506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:09:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459921155] [2024-11-28 02:09:53,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:53,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:09:53,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:53,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:09:53,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:53,487 INFO L87 Difference]: Start difference. First operand 390 states and 649 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:54,135 INFO L93 Difference]: Finished difference Result 1497 states and 2493 transitions. [2024-11-28 02:09:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:54,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 524 [2024-11-28 02:09:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:54,145 INFO L225 Difference]: With dead ends: 1497 [2024-11-28 02:09:54,145 INFO L226 Difference]: Without dead ends: 1110 [2024-11-28 02:09:54,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:54,151 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 739 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:54,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 2055 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:09:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-28 02:09:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 390. [2024-11-28 02:09:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 264 states have (on average 1.5265151515151516) internal successors, (403), 265 states have internal predecessors, (403), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-28 02:09:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 649 transitions. [2024-11-28 02:09:54,264 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 649 transitions. Word has length 524 [2024-11-28 02:09:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:54,266 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 649 transitions. [2024-11-28 02:09:54,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 649 transitions. [2024-11-28 02:09:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-28 02:09:54,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:54,274 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:54,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:09:54,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:54,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1326164741, now seen corresponding path program 1 times [2024-11-28 02:09:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:54,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387129323] [2024-11-28 02:09:54,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:54,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:09:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:55,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387129323] [2024-11-28 02:09:55,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387129323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:55,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:55,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:09:55,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495980300] [2024-11-28 02:09:55,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:55,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:09:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:55,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:09:55,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:55,029 INFO L87 Difference]: Start difference. First operand 390 states and 649 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:55,710 INFO L93 Difference]: Finished difference Result 1164 states and 1930 transitions. [2024-11-28 02:09:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:55,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 524 [2024-11-28 02:09:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:55,718 INFO L225 Difference]: With dead ends: 1164 [2024-11-28 02:09:55,718 INFO L226 Difference]: Without dead ends: 777 [2024-11-28 02:09:55,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:55,721 INFO L435 NwaCegarLoop]: 749 mSDtfsCounter, 398 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:55,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 2056 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:09:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-28 02:09:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 390. [2024-11-28 02:09:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 264 states have (on average 1.5265151515151516) internal successors, (403), 265 states have internal predecessors, (403), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-28 02:09:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 649 transitions. [2024-11-28 02:09:55,801 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 649 transitions. Word has length 524 [2024-11-28 02:09:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:55,803 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 649 transitions. [2024-11-28 02:09:55,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:09:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 649 transitions. [2024-11-28 02:09:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2024-11-28 02:09:55,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:55,809 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:55,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:09:55,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:55,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash 516818115, now seen corresponding path program 1 times [2024-11-28 02:09:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:55,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590570661] [2024-11-28 02:09:55,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:10:02,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:02,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590570661] [2024-11-28 02:10:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590570661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:02,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:10:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162745909] [2024-11-28 02:10:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:02,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:10:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:02,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:10:02,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:10:02,368 INFO L87 Difference]: Start difference. First operand 390 states and 649 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:10:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:03,115 INFO L93 Difference]: Finished difference Result 1154 states and 1912 transitions. [2024-11-28 02:10:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:10:03,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 524 [2024-11-28 02:10:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:03,125 INFO L225 Difference]: With dead ends: 1154 [2024-11-28 02:10:03,125 INFO L226 Difference]: Without dead ends: 767 [2024-11-28 02:10:03,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:10:03,128 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 380 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:03,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2363 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:10:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-28 02:10:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 382. [2024-11-28 02:10:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 256 states have (on average 1.51953125) internal successors, (389), 257 states have internal predecessors, (389), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-28 02:10:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 635 transitions. [2024-11-28 02:10:03,201 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 635 transitions. Word has length 524 [2024-11-28 02:10:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 635 transitions. [2024-11-28 02:10:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:10:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 635 transitions. [2024-11-28 02:10:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-28 02:10:03,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:03,206 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:03,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:10:03,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:03,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:03,207 INFO L85 PathProgramCache]: Analyzing trace with hash -477261120, now seen corresponding path program 1 times [2024-11-28 02:10:03,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:03,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132058733] [2024-11-28 02:10:03,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:10:03,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:03,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132058733] [2024-11-28 02:10:03,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132058733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:03,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:03,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:10:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043757571] [2024-11-28 02:10:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:03,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:10:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:03,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:10:03,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:10:03,880 INFO L87 Difference]: Start difference. First operand 382 states and 635 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:10:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:03,959 INFO L93 Difference]: Finished difference Result 1134 states and 1889 transitions. [2024-11-28 02:10:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:10:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 526 [2024-11-28 02:10:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:03,966 INFO L225 Difference]: With dead ends: 1134 [2024-11-28 02:10:03,967 INFO L226 Difference]: Without dead ends: 755 [2024-11-28 02:10:03,968 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 02:10:03,969 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 213 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:03,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 764 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:10:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-28 02:10:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 753. [2024-11-28 02:10:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 502 states have (on average 1.5139442231075697) internal successors, (760), 504 states have internal predecessors, (760), 246 states have call successors, (246), 4 states have call predecessors, (246), 4 states have return successors, (246), 244 states have call predecessors, (246), 246 states have call successors, (246) [2024-11-28 02:10:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1252 transitions. [2024-11-28 02:10:04,074 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1252 transitions. Word has length 526 [2024-11-28 02:10:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:04,075 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1252 transitions. [2024-11-28 02:10:04,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:10:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1252 transitions. [2024-11-28 02:10:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-28 02:10:04,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:04,080 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:04,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:10:04,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:04,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1294909570, now seen corresponding path program 1 times [2024-11-28 02:10:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:04,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076123599] [2024-11-28 02:10:04,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:04,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14280 trivial. 0 not checked. [2024-11-28 02:15:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076123599] [2024-11-28 02:15:37,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076123599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:37,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:37,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:15:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124029224] [2024-11-28 02:15:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:37,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:15:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:37,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:15:37,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:15:37,913 INFO L87 Difference]: Start difference. First operand 753 states and 1252 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:15:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:45,022 INFO L93 Difference]: Finished difference Result 1121 states and 1788 transitions. [2024-11-28 02:15:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:15:45,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 526 [2024-11-28 02:15:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:45,033 INFO L225 Difference]: With dead ends: 1121 [2024-11-28 02:15:45,033 INFO L226 Difference]: Without dead ends: 1119 [2024-11-28 02:15:45,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:15:45,035 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 243 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:45,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2529 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:15:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2024-11-28 02:15:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 965. [2024-11-28 02:15:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 678 states have (on average 1.4985250737463127) internal successors, (1016), 684 states have internal predecessors, (1016), 278 states have call successors, (278), 8 states have call predecessors, (278), 8 states have return successors, (278), 272 states have call predecessors, (278), 278 states have call successors, (278) [2024-11-28 02:15:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1572 transitions. [2024-11-28 02:15:45,219 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1572 transitions. Word has length 526 [2024-11-28 02:15:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:45,220 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1572 transitions. [2024-11-28 02:15:45,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2024-11-28 02:15:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1572 transitions. [2024-11-28 02:15:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-28 02:15:45,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:45,226 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:45,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:15:45,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:45,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1036744132, now seen corresponding path program 1 times [2024-11-28 02:15:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:45,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362048714] [2024-11-28 02:15:45,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:45,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:06,541 WARN L286 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 246 DAG size of output: 224 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:21:45,836 WARN L286 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 236 DAG size of output: 214 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 02:23:32,722 WARN L286 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 233 DAG size of output: 210 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)