./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/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 8509af5ddea8b4969815a398e5f07c16448270bd1737b92218393c93b8a3a0c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:06:21,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:21,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:06:21,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:21,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:21,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:21,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:21,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:21,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:21,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:21,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:21,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:21,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:21,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:21,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:21,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:21,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:21,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:21,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:21,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:21,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:21,438 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:21,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:21,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:21,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:21,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:21,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:21,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:21,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:21,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:21,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:21,441 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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/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 -> 8509af5ddea8b4969815a398e5f07c16448270bd1737b92218393c93b8a3a0c1 [2024-11-27 20:06:21,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:21,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:21,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:21,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:21,810 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:21,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-27 20:06:25,180 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/data/6cb508242/3fb8c9afeed84aa7a6eb23603b5bfa53/FLAGd3030ff1f [2024-11-27 20:06:25,673 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:25,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-27 20:06:25,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/data/6cb508242/3fb8c9afeed84aa7a6eb23603b5bfa53/FLAGd3030ff1f [2024-11-27 20:06:25,793 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/data/6cb508242/3fb8c9afeed84aa7a6eb23603b5bfa53 [2024-11-27 20:06:25,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:25,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:25,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:25,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:25,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:25,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:25" (1/1) ... [2024-11-27 20:06:25,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ffa13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:25, skipping insertion in model container [2024-11-27 20:06:25,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:25" (1/1) ... [2024-11-27 20:06:25,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:26,044 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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2024-11-27 20:06:26,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:26,149 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:26,168 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_958d5ed3-bee8-44b0-8eb7-b051fc46e307/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2024-11-27 20:06:26,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:26,280 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:26,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26 WrapperNode [2024-11-27 20:06:26,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:26,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:26,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:26,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:26,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,384 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2024-11-27 20:06:26,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:26,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:26,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:26,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:26,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,448 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]. [2024-11-27 20:06:26,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,473 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:26,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:26,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:26,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:26,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (1/1) ... [2024-11-27 20:06:26,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:26,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:26,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:06:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:06:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:06:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:26,735 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:26,738 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:27,469 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:27,469 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:27,486 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:27,486 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:06:27,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:27 BoogieIcfgContainer [2024-11-27 20:06:27,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:27,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:27,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:27,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:27,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:25" (1/3) ... [2024-11-27 20:06:27,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a7ab5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:27, skipping insertion in model container [2024-11-27 20:06:27,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:26" (2/3) ... [2024-11-27 20:06:27,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a7ab5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:27, skipping insertion in model container [2024-11-27 20:06:27,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:27" (3/3) ... [2024-11-27 20:06:27,528 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-27 20:06:27,545 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:27,546 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:06:27,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:27,652 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;@7594f528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:27,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 20:06:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 20:06:27,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:27,672 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:27,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:27,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2045569818, now seen corresponding path program 1 times [2024-11-27 20:06:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779316855] [2024-11-27 20:06:27,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:27,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-27 20:06:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779316855] [2024-11-27 20:06:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779316855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670858047] [2024-11-27 20:06:28,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:28,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:28,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:06:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:28,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:06:28,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-27 20:06:28,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670858047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:28,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:06:28,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889693128] [2024-11-27 20:06:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:28,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:06:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:28,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:06:28,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:28,424 INFO L87 Difference]: Start difference. First operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:06:28,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:28,455 INFO L93 Difference]: Finished difference Result 179 states and 306 transitions. [2024-11-27 20:06:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:06:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-27 20:06:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:28,464 INFO L225 Difference]: With dead ends: 179 [2024-11-27 20:06:28,464 INFO L226 Difference]: Without dead ends: 89 [2024-11-27 20:06:28,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:28,471 INFO L435 NwaCegarLoop]: 139 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, 139 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 [2024-11-27 20:06:28,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-27 20:06:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-27 20:06:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 20:06:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2024-11-27 20:06:28,513 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 139 transitions. Word has length 141 [2024-11-27 20:06:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:28,514 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 139 transitions. [2024-11-27 20:06:28,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:06:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 139 transitions. [2024-11-27 20:06:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 20:06:28,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:28,518 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:28,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:06:28,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:06:28,719 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:28,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 707075114, now seen corresponding path program 1 times [2024-11-27 20:06:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712834143] [2024-11-27 20:06:28,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:29,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712834143] [2024-11-27 20:06:29,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712834143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:29,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800889910] [2024-11-27 20:06:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:29,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:06:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:29,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:06:29,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:29,515 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:29,799 INFO L93 Difference]: Finished difference Result 291 states and 456 transitions. [2024-11-27 20:06:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:29,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-27 20:06:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:29,811 INFO L225 Difference]: With dead ends: 291 [2024-11-27 20:06:29,811 INFO L226 Difference]: Without dead ends: 205 [2024-11-27 20:06:29,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:29,813 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 206 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:29,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 395 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:06:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-27 20:06:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 175. [2024-11-27 20:06:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-27 20:06:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 275 transitions. [2024-11-27 20:06:29,887 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 275 transitions. Word has length 141 [2024-11-27 20:06:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:29,891 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 275 transitions. [2024-11-27 20:06:29,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2024-11-27 20:06:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 20:06:29,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:29,898 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:29,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:06:29,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:29,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -415764853, now seen corresponding path program 1 times [2024-11-27 20:06:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:29,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989181320] [2024-11-27 20:06:29,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989181320] [2024-11-27 20:06:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989181320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:30,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:30,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:06:30,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836810743] [2024-11-27 20:06:30,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:30,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:30,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:30,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:30,770 INFO L87 Difference]: Start difference. First operand 175 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:31,245 INFO L93 Difference]: Finished difference Result 514 states and 808 transitions. [2024-11-27 20:06:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:06:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-11-27 20:06:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:31,250 INFO L225 Difference]: With dead ends: 514 [2024-11-27 20:06:31,251 INFO L226 Difference]: Without dead ends: 342 [2024-11-27 20:06:31,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:31,253 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 215 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:31,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 427 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:06:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-27 20:06:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 179. [2024-11-27 20:06:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.463235294117647) internal successors, (199), 136 states have internal predecessors, (199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-27 20:06:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 279 transitions. [2024-11-27 20:06:31,333 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 279 transitions. Word has length 142 [2024-11-27 20:06:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:31,334 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 279 transitions. [2024-11-27 20:06:31,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 279 transitions. [2024-11-27 20:06:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:06:31,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:31,342 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:31,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:06:31,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:31,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 85879794, now seen corresponding path program 1 times [2024-11-27 20:06:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938040645] [2024-11-27 20:06:31,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:39,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:39,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938040645] [2024-11-27 20:06:39,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938040645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:39,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:39,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:06:39,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137304662] [2024-11-27 20:06:39,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:39,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:06:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:39,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:06:39,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:06:39,526 INFO L87 Difference]: Start difference. First operand 179 states and 279 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:46,153 INFO L93 Difference]: Finished difference Result 557 states and 834 transitions. [2024-11-27 20:06:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:06:46,153 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-27 20:06:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:46,157 INFO L225 Difference]: With dead ends: 557 [2024-11-27 20:06:46,157 INFO L226 Difference]: Without dead ends: 381 [2024-11-27 20:06:46,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:06:46,160 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 556 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:46,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 528 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:06:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-27 20:06:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 247. [2024-11-27 20:06:46,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 194 states have internal predecessors, (275), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-27 20:06:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 375 transitions. [2024-11-27 20:06:46,219 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 375 transitions. Word has length 143 [2024-11-27 20:06:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:46,220 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 375 transitions. [2024-11-27 20:06:46,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 375 transitions. [2024-11-27 20:06:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:06:46,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:46,228 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:46,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:06:46,229 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:46,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1860887156, now seen corresponding path program 1 times [2024-11-27 20:06:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272335956] [2024-11-27 20:06:46,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272335956] [2024-11-27 20:06:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272335956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:50,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:50,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:06:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88663924] [2024-11-27 20:06:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:50,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:06:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:50,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:06:50,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:50,135 INFO L87 Difference]: Start difference. First operand 247 states and 375 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:52,040 INFO L93 Difference]: Finished difference Result 873 states and 1310 transitions. [2024-11-27 20:06:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-27 20:06:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:52,047 INFO L225 Difference]: With dead ends: 873 [2024-11-27 20:06:52,048 INFO L226 Difference]: Without dead ends: 629 [2024-11-27 20:06:52,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:52,050 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 394 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:52,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 495 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:06:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-27 20:06:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 345. [2024-11-27 20:06:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 269 states have (on average 1.4349442379182156) internal successors, (386), 271 states have internal predecessors, (386), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-27 20:06:52,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 526 transitions. [2024-11-27 20:06:52,127 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 526 transitions. Word has length 143 [2024-11-27 20:06:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:52,128 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 526 transitions. [2024-11-27 20:06:52,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 526 transitions. [2024-11-27 20:06:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:06:52,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:52,132 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:52,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:06:52,133 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:52,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 765938164, now seen corresponding path program 1 times [2024-11-27 20:06:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:52,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569982664] [2024-11-27 20:06:52,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569982664] [2024-11-27 20:06:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569982664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:06:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064476334] [2024-11-27 20:06:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:56,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:06:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:56,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:06:56,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:56,028 INFO L87 Difference]: Start difference. First operand 345 states and 526 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:57,117 INFO L93 Difference]: Finished difference Result 925 states and 1375 transitions. [2024-11-27 20:06:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-27 20:06:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:57,122 INFO L225 Difference]: With dead ends: 925 [2024-11-27 20:06:57,123 INFO L226 Difference]: Without dead ends: 638 [2024-11-27 20:06:57,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:57,125 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 339 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:57,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 452 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:06:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-27 20:06:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 498. [2024-11-27 20:06:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 422 states have (on average 1.4454976303317535) internal successors, (610), 424 states have internal predecessors, (610), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-27 20:06:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 750 transitions. [2024-11-27 20:06:57,184 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 750 transitions. Word has length 143 [2024-11-27 20:06:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:57,184 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 750 transitions. [2024-11-27 20:06:57,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 750 transitions. [2024-11-27 20:06:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:06:57,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:57,187 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:57,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:06:57,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:57,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1184253277, now seen corresponding path program 1 times [2024-11-27 20:06:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:57,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052851553] [2024-11-27 20:06:57,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:57,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:06:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052851553] [2024-11-27 20:06:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052851553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190974923] [2024-11-27 20:06:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:59,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:59,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:59,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:59,319 INFO L87 Difference]: Start difference. First operand 498 states and 750 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:06:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:59,933 INFO L93 Difference]: Finished difference Result 964 states and 1434 transitions. [2024-11-27 20:06:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:06:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-27 20:06:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:59,940 INFO L225 Difference]: With dead ends: 964 [2024-11-27 20:06:59,940 INFO L226 Difference]: Without dead ends: 674 [2024-11-27 20:06:59,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:06:59,945 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 208 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:59,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 487 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:06:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-27 20:07:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 504. [2024-11-27 20:07:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 428 states have (on average 1.4345794392523366) internal successors, (614), 430 states have internal predecessors, (614), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-27 20:07:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 754 transitions. [2024-11-27 20:07:00,024 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 754 transitions. Word has length 143 [2024-11-27 20:07:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:00,024 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 754 transitions. [2024-11-27 20:07:00,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 754 transitions. [2024-11-27 20:07:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-27 20:07:00,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:00,027 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:00,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:07:00,028 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:00,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 849769906, now seen corresponding path program 1 times [2024-11-27 20:07:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500330511] [2024-11-27 20:07:00,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:00,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:00,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500330511] [2024-11-27 20:07:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500330511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:00,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:00,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:07:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411233470] [2024-11-27 20:07:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:00,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:07:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:00,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:07:00,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:07:00,449 INFO L87 Difference]: Start difference. First operand 504 states and 754 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:00,777 INFO L93 Difference]: Finished difference Result 864 states and 1289 transitions. [2024-11-27 20:07:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:07:00,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-27 20:07:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:00,780 INFO L225 Difference]: With dead ends: 864 [2024-11-27 20:07:00,781 INFO L226 Difference]: Without dead ends: 516 [2024-11-27 20:07:00,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:07:00,782 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 117 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:00,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 336 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:07:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-27 20:07:00,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 462. [2024-11-27 20:07:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 386 states have (on average 1.4041450777202074) internal successors, (542), 388 states have internal predecessors, (542), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-27 20:07:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2024-11-27 20:07:00,863 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 143 [2024-11-27 20:07:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:00,863 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2024-11-27 20:07:00,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2024-11-27 20:07:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 20:07:00,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:00,866 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:00,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:07:00,867 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:00,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1931727872, now seen corresponding path program 1 times [2024-11-27 20:07:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279515300] [2024-11-27 20:07:00,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:04,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:04,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279515300] [2024-11-27 20:07:04,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279515300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:04,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:04,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:07:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887708544] [2024-11-27 20:07:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:04,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:07:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:04,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:07:04,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:07:04,752 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:07,092 INFO L93 Difference]: Finished difference Result 914 states and 1339 transitions. [2024-11-27 20:07:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:07:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-27 20:07:07,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:07,097 INFO L225 Difference]: With dead ends: 914 [2024-11-27 20:07:07,097 INFO L226 Difference]: Without dead ends: 670 [2024-11-27 20:07:07,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:07:07,099 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 213 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:07,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 528 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:07:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-27 20:07:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 392. [2024-11-27 20:07:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 326 states have (on average 1.4049079754601228) internal successors, (458), 326 states have internal predecessors, (458), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:07:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 578 transitions. [2024-11-27 20:07:07,156 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 578 transitions. Word has length 144 [2024-11-27 20:07:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:07,156 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 578 transitions. [2024-11-27 20:07:07,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 578 transitions. [2024-11-27 20:07:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 20:07:07,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:07,159 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:07,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:07:07,160 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:07,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2112476102, now seen corresponding path program 1 times [2024-11-27 20:07:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:07,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988517723] [2024-11-27 20:07:07,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988517723] [2024-11-27 20:07:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988517723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:07:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207340267] [2024-11-27 20:07:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:07:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:14,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:07:14,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:07:14,428 INFO L87 Difference]: Start difference. First operand 392 states and 578 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:16,858 INFO L93 Difference]: Finished difference Result 834 states and 1202 transitions. [2024-11-27 20:07:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:07:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-27 20:07:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:16,861 INFO L225 Difference]: With dead ends: 834 [2024-11-27 20:07:16,861 INFO L226 Difference]: Without dead ends: 541 [2024-11-27 20:07:16,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:07:16,863 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 302 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:16,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 763 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:07:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-27 20:07:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 429. [2024-11-27 20:07:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 363 states have (on average 1.3911845730027548) internal successors, (505), 363 states have internal predecessors, (505), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:07:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 625 transitions. [2024-11-27 20:07:16,905 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 625 transitions. Word has length 144 [2024-11-27 20:07:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:16,906 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 625 transitions. [2024-11-27 20:07:16,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 625 transitions. [2024-11-27 20:07:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:07:16,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:16,908 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:16,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:07:16,908 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:16,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash -156289763, now seen corresponding path program 1 times [2024-11-27 20:07:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113396875] [2024-11-27 20:07:16,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:21,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113396875] [2024-11-27 20:07:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113396875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:07:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356226012] [2024-11-27 20:07:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:21,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:07:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:21,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:07:21,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:07:21,217 INFO L87 Difference]: Start difference. First operand 429 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:23,992 INFO L93 Difference]: Finished difference Result 853 states and 1237 transitions. [2024-11-27 20:07:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:07:23,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-27 20:07:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:23,996 INFO L225 Difference]: With dead ends: 853 [2024-11-27 20:07:23,997 INFO L226 Difference]: Without dead ends: 659 [2024-11-27 20:07:23,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:07:23,998 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 271 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:23,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 700 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:07:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-27 20:07:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 417. [2024-11-27 20:07:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 351 states have (on average 1.393162393162393) internal successors, (489), 351 states have internal predecessors, (489), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:07:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 609 transitions. [2024-11-27 20:07:24,052 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 609 transitions. Word has length 145 [2024-11-27 20:07:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:24,053 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 609 transitions. [2024-11-27 20:07:24,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 609 transitions. [2024-11-27 20:07:24,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:07:24,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:24,056 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:24,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:07:24,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:24,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1280528815, now seen corresponding path program 1 times [2024-11-27 20:07:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:24,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044952245] [2024-11-27 20:07:24,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:24,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:29,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044952245] [2024-11-27 20:07:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044952245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:07:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512551455] [2024-11-27 20:07:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:29,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:07:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:29,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:07:29,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:07:29,341 INFO L87 Difference]: Start difference. First operand 417 states and 609 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:33,116 INFO L93 Difference]: Finished difference Result 810 states and 1172 transitions. [2024-11-27 20:07:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:07:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-27 20:07:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:33,121 INFO L225 Difference]: With dead ends: 810 [2024-11-27 20:07:33,121 INFO L226 Difference]: Without dead ends: 618 [2024-11-27 20:07:33,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:07:33,122 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 265 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:33,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 586 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 20:07:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-27 20:07:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 423. [2024-11-27 20:07:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 357 states have (on average 1.3977591036414565) internal successors, (499), 357 states have internal predecessors, (499), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:07:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 619 transitions. [2024-11-27 20:07:33,175 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 619 transitions. Word has length 145 [2024-11-27 20:07:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:33,175 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 619 transitions. [2024-11-27 20:07:33,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 619 transitions. [2024-11-27 20:07:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:07:33,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:33,178 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:33,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:07:33,179 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:33,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1919489489, now seen corresponding path program 1 times [2024-11-27 20:07:33,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842002800] [2024-11-27 20:07:33,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:33,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:07:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842002800] [2024-11-27 20:07:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842002800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:07:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:07:39,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:07:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021166844] [2024-11-27 20:07:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:07:39,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:07:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:39,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:07:39,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:07:39,139 INFO L87 Difference]: Start difference. First operand 423 states and 619 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:07:43,969 INFO L93 Difference]: Finished difference Result 1006 states and 1449 transitions. [2024-11-27 20:07:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:07:43,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-27 20:07:43,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:07:43,974 INFO L225 Difference]: With dead ends: 1006 [2024-11-27 20:07:43,974 INFO L226 Difference]: Without dead ends: 728 [2024-11-27 20:07:43,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:07:43,976 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 397 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:07:43,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 866 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 20:07:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-27 20:07:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 471. [2024-11-27 20:07:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 405 states have (on average 1.4049382716049383) internal successors, (569), 405 states have internal predecessors, (569), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:07:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 689 transitions. [2024-11-27 20:07:44,044 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 689 transitions. Word has length 145 [2024-11-27 20:07:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:07:44,045 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 689 transitions. [2024-11-27 20:07:44,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:07:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 689 transitions. [2024-11-27 20:07:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-27 20:07:44,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:07:44,047 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:07:44,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:07:44,048 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:44,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -600470445, now seen corresponding path program 1 times [2024-11-27 20:07:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:44,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844733764] [2024-11-27 20:07:44,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:08:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844733764] [2024-11-27 20:08:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844733764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:08:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285974556] [2024-11-27 20:08:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:20,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:08:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:20,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:08:20,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:08:20,553 INFO L87 Difference]: Start difference. First operand 471 states and 689 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:28,628 INFO L93 Difference]: Finished difference Result 861 states and 1226 transitions. [2024-11-27 20:08:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:08:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-27 20:08:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:28,631 INFO L225 Difference]: With dead ends: 861 [2024-11-27 20:08:28,631 INFO L226 Difference]: Without dead ends: 659 [2024-11-27 20:08:28,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:08:28,633 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 331 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:28,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 898 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 20:08:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-27 20:08:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 489. [2024-11-27 20:08:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 423 states have (on average 1.392434988179669) internal successors, (589), 423 states have internal predecessors, (589), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:08:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 709 transitions. [2024-11-27 20:08:28,692 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 709 transitions. Word has length 145 [2024-11-27 20:08:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:28,693 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 709 transitions. [2024-11-27 20:08:28,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 709 transitions. [2024-11-27 20:08:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:08:28,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:28,695 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:28,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:08:28,695 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:28,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -371173318, now seen corresponding path program 1 times [2024-11-27 20:08:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714722211] [2024-11-27 20:08:28,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:08:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714722211] [2024-11-27 20:08:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714722211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:46,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:08:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163025559] [2024-11-27 20:08:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:46,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:08:46,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:46,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:08:46,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:08:46,199 INFO L87 Difference]: Start difference. First operand 489 states and 709 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:08:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:47,566 INFO L93 Difference]: Finished difference Result 817 states and 1135 transitions. [2024-11-27 20:08:47,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:08:47,566 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-11-27 20:08:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:47,569 INFO L225 Difference]: With dead ends: 817 [2024-11-27 20:08:47,570 INFO L226 Difference]: Without dead ends: 815 [2024-11-27 20:08:47,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:08:47,571 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 417 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:47,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 864 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:08:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-27 20:08:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 631. [2024-11-27 20:08:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 565 states have (on average 1.3610619469026548) internal successors, (769), 565 states have internal predecessors, (769), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:08:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 889 transitions. [2024-11-27 20:08:47,633 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 889 transitions. Word has length 146 [2024-11-27 20:08:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:47,634 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 889 transitions. [2024-11-27 20:08:47,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:08:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 889 transitions. [2024-11-27 20:08:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:08:47,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:47,636 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:47,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:08:47,636 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:47,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:47,637 INFO L85 PathProgramCache]: Analyzing trace with hash 51528508, now seen corresponding path program 1 times [2024-11-27 20:08:47,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:47,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190542912] [2024-11-27 20:08:47,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:08:47,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:47,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190542912] [2024-11-27 20:08:47,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190542912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:47,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:47,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:08:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220847237] [2024-11-27 20:08:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:47,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:08:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:47,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:08:47,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:08:47,838 INFO L87 Difference]: Start difference. First operand 631 states and 889 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:48,040 INFO L93 Difference]: Finished difference Result 1003 states and 1422 transitions. [2024-11-27 20:08:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:08:48,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-27 20:08:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:48,044 INFO L225 Difference]: With dead ends: 1003 [2024-11-27 20:08:48,044 INFO L226 Difference]: Without dead ends: 624 [2024-11-27 20:08:48,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:08:48,046 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 128 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:48,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 517 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:08:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-27 20:08:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 600. [2024-11-27 20:08:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 534 states have (on average 1.3651685393258426) internal successors, (729), 534 states have internal predecessors, (729), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:08:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 849 transitions. [2024-11-27 20:08:48,105 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 849 transitions. Word has length 146 [2024-11-27 20:08:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:48,106 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 849 transitions. [2024-11-27 20:08:48,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 849 transitions. [2024-11-27 20:08:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:08:48,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:48,108 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:48,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:08:48,108 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:48,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 812120645, now seen corresponding path program 1 times [2024-11-27 20:08:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:48,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149305935] [2024-11-27 20:08:48,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:48,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:08:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149305935] [2024-11-27 20:08:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149305935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:08:53,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:08:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:08:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084288936] [2024-11-27 20:08:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:08:53,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:08:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:08:53,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:08:53,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:08:53,414 INFO L87 Difference]: Start difference. First operand 600 states and 849 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:08:57,021 INFO L93 Difference]: Finished difference Result 924 states and 1326 transitions. [2024-11-27 20:08:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:08:57,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-27 20:08:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:08:57,024 INFO L225 Difference]: With dead ends: 924 [2024-11-27 20:08:57,024 INFO L226 Difference]: Without dead ends: 726 [2024-11-27 20:08:57,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:08:57,025 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 293 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:08:57,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 539 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:08:57,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-27 20:08:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 610. [2024-11-27 20:08:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 544 states have (on average 1.3658088235294117) internal successors, (743), 544 states have internal predecessors, (743), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-27 20:08:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 863 transitions. [2024-11-27 20:08:57,088 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 863 transitions. Word has length 146 [2024-11-27 20:08:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:08:57,089 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 863 transitions. [2024-11-27 20:08:57,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:08:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 863 transitions. [2024-11-27 20:08:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-27 20:08:57,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:08:57,091 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:08:57,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:08:57,091 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:08:57,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:08:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash 326597605, now seen corresponding path program 1 times [2024-11-27 20:08:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:08:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554626412] [2024-11-27 20:08:57,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:09:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:03,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554626412] [2024-11-27 20:09:03,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554626412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:03,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:03,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 20:09:03,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766384712] [2024-11-27 20:09:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:03,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:09:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:03,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:09:03,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:09:03,884 INFO L87 Difference]: Start difference. First operand 610 states and 863 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:09,357 INFO L93 Difference]: Finished difference Result 1616 states and 2329 transitions. [2024-11-27 20:09:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:09:09,358 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-27 20:09:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:09,367 INFO L225 Difference]: With dead ends: 1616 [2024-11-27 20:09:09,367 INFO L226 Difference]: Without dead ends: 1398 [2024-11-27 20:09:09,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:09:09,369 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 615 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:09,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1167 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 20:09:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2024-11-27 20:09:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 974. [2024-11-27 20:09:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 864 states have (on average 1.3946759259259258) internal successors, (1205), 864 states have internal predecessors, (1205), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:09:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1405 transitions. [2024-11-27 20:09:09,471 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1405 transitions. Word has length 146 [2024-11-27 20:09:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:09,472 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1405 transitions. [2024-11-27 20:09:09,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1405 transitions. [2024-11-27 20:09:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:09:09,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:09,474 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:09,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:09:09,475 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:09,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 822627692, now seen corresponding path program 1 times [2024-11-27 20:09:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609446578] [2024-11-27 20:09:09,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:09:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609446578] [2024-11-27 20:09:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609446578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:33,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 20:09:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488540106] [2024-11-27 20:09:33,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:09:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:33,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:09:33,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:09:33,005 INFO L87 Difference]: Start difference. First operand 974 states and 1405 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:09:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:35,785 INFO L93 Difference]: Finished difference Result 1354 states and 1901 transitions. [2024-11-27 20:09:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:09:35,785 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 147 [2024-11-27 20:09:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:35,792 INFO L225 Difference]: With dead ends: 1354 [2024-11-27 20:09:35,792 INFO L226 Difference]: Without dead ends: 1352 [2024-11-27 20:09:35,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:09:35,794 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 550 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:35,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 713 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:09:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2024-11-27 20:09:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1090. [2024-11-27 20:09:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 980 states have (on average 1.3908163265306122) internal successors, (1363), 980 states have internal predecessors, (1363), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:09:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1563 transitions. [2024-11-27 20:09:35,908 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1563 transitions. Word has length 147 [2024-11-27 20:09:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:35,909 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1563 transitions. [2024-11-27 20:09:35,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:09:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1563 transitions. [2024-11-27 20:09:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:09:35,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:35,911 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:35,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:09:35,912 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:35,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash -188489558, now seen corresponding path program 1 times [2024-11-27 20:09:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17914000] [2024-11-27 20:09:35,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:09:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17914000] [2024-11-27 20:09:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17914000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:09:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46224461] [2024-11-27 20:09:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:36,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:09:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:36,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:09:36,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:36,052 INFO L87 Difference]: Start difference. First operand 1090 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:36,176 INFO L93 Difference]: Finished difference Result 1778 states and 2581 transitions. [2024-11-27 20:09:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:09:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-27 20:09:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:36,183 INFO L225 Difference]: With dead ends: 1778 [2024-11-27 20:09:36,184 INFO L226 Difference]: Without dead ends: 1150 [2024-11-27 20:09:36,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:09:36,186 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:36,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 250 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2024-11-27 20:09:36,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1080. [2024-11-27 20:09:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 970 states have (on average 1.368041237113402) internal successors, (1327), 970 states have internal predecessors, (1327), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:09:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1527 transitions. [2024-11-27 20:09:36,293 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1527 transitions. Word has length 147 [2024-11-27 20:09:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:36,294 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1527 transitions. [2024-11-27 20:09:36,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1527 transitions. [2024-11-27 20:09:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:09:36,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:36,297 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:36,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:09:36,297 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:36,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2079978556, now seen corresponding path program 1 times [2024-11-27 20:09:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:36,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341402694] [2024-11-27 20:09:36,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:09:48,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341402694] [2024-11-27 20:09:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341402694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:48,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:09:48,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:09:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010585986] [2024-11-27 20:09:48,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:48,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:09:48,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:48,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:09:48,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:09:48,524 INFO L87 Difference]: Start difference. First operand 1080 states and 1527 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:54,426 INFO L93 Difference]: Finished difference Result 1500 states and 2107 transitions. [2024-11-27 20:09:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:09:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-27 20:09:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:54,432 INFO L225 Difference]: With dead ends: 1500 [2024-11-27 20:09:54,432 INFO L226 Difference]: Without dead ends: 1282 [2024-11-27 20:09:54,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:09:54,435 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 453 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:09:54,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 714 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 20:09:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-11-27 20:09:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1072. [2024-11-27 20:09:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 962 states have (on average 1.366943866943867) internal successors, (1315), 962 states have internal predecessors, (1315), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:09:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1515 transitions. [2024-11-27 20:09:54,536 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1515 transitions. Word has length 147 [2024-11-27 20:09:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:54,536 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1515 transitions. [2024-11-27 20:09:54,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:09:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1515 transitions. [2024-11-27 20:09:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-27 20:09:54,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:54,539 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:54,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:09:54,539 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:54,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:54,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1534930370, now seen corresponding path program 1 times [2024-11-27 20:09:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457334290] [2024-11-27 20:09:54,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:54,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457334290] [2024-11-27 20:10:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457334290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 20:10:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536176715] [2024-11-27 20:10:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:08,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:10:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:08,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:10:08,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:10:08,807 INFO L87 Difference]: Start difference. First operand 1072 states and 1515 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:13,461 INFO L93 Difference]: Finished difference Result 1621 states and 2234 transitions. [2024-11-27 20:10:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:10:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-27 20:10:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:13,472 INFO L225 Difference]: With dead ends: 1621 [2024-11-27 20:10:13,472 INFO L226 Difference]: Without dead ends: 1391 [2024-11-27 20:10:13,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:10:13,475 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 485 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:13,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 728 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 20:10:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-27 20:10:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1086. [2024-11-27 20:10:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 976 states have (on average 1.3637295081967213) internal successors, (1331), 976 states have internal predecessors, (1331), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1531 transitions. [2024-11-27 20:10:13,603 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1531 transitions. Word has length 147 [2024-11-27 20:10:13,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:13,604 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1531 transitions. [2024-11-27 20:10:13,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1531 transitions. [2024-11-27 20:10:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:10:13,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:13,606 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:13,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:10:13,607 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:13,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1032776174, now seen corresponding path program 1 times [2024-11-27 20:10:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397333796] [2024-11-27 20:10:13,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:13,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:14,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:14,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397333796] [2024-11-27 20:10:14,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397333796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:14,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:14,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:10:14,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151501212] [2024-11-27 20:10:14,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:14,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:10:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:14,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:10:14,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:10:14,154 INFO L87 Difference]: Start difference. First operand 1086 states and 1531 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:14,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:14,783 INFO L93 Difference]: Finished difference Result 1686 states and 2416 transitions. [2024-11-27 20:10:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:10:14,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-27 20:10:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:14,789 INFO L225 Difference]: With dead ends: 1686 [2024-11-27 20:10:14,789 INFO L226 Difference]: Without dead ends: 1142 [2024-11-27 20:10:14,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:10:14,791 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 131 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:14,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 515 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:10:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-11-27 20:10:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1082. [2024-11-27 20:10:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 972 states have (on average 1.3569958847736625) internal successors, (1319), 972 states have internal predecessors, (1319), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1519 transitions. [2024-11-27 20:10:14,912 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1519 transitions. Word has length 148 [2024-11-27 20:10:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:14,913 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1519 transitions. [2024-11-27 20:10:14,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1519 transitions. [2024-11-27 20:10:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 20:10:14,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:14,916 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:14,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:10:14,916 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:14,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1331974416, now seen corresponding path program 1 times [2024-11-27 20:10:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619958954] [2024-11-27 20:10:14,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619958954] [2024-11-27 20:10:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619958954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:15,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:10:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184945402] [2024-11-27 20:10:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:15,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:10:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:15,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:10:15,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:10:15,342 INFO L87 Difference]: Start difference. First operand 1082 states and 1519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:15,816 INFO L93 Difference]: Finished difference Result 1802 states and 2537 transitions. [2024-11-27 20:10:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:10:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-27 20:10:15,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:15,822 INFO L225 Difference]: With dead ends: 1802 [2024-11-27 20:10:15,822 INFO L226 Difference]: Without dead ends: 1141 [2024-11-27 20:10:15,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:10:15,824 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 128 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:15,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 372 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:10:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-27 20:10:15,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1081. [2024-11-27 20:10:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 971 states have (on average 1.356333676622039) internal successors, (1317), 971 states have internal predecessors, (1317), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1517 transitions. [2024-11-27 20:10:15,925 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1517 transitions. Word has length 148 [2024-11-27 20:10:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:15,926 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1517 transitions. [2024-11-27 20:10:15,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1517 transitions. [2024-11-27 20:10:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:10:15,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:15,928 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:15,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:10:15,928 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:15,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash -773530982, now seen corresponding path program 1 times [2024-11-27 20:10:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:15,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906371630] [2024-11-27 20:10:15,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:18,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906371630] [2024-11-27 20:10:18,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906371630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:18,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:18,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:10:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971683816] [2024-11-27 20:10:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:18,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:10:18,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:18,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:10:18,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:10:18,207 INFO L87 Difference]: Start difference. First operand 1081 states and 1517 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:19,912 INFO L93 Difference]: Finished difference Result 1971 states and 2757 transitions. [2024-11-27 20:10:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:10:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 149 [2024-11-27 20:10:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:19,917 INFO L225 Difference]: With dead ends: 1971 [2024-11-27 20:10:19,917 INFO L226 Difference]: Without dead ends: 1113 [2024-11-27 20:10:19,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:10:19,920 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 246 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:19,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 529 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:10:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-27 20:10:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 975. [2024-11-27 20:10:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 865 states have (on average 1.3560693641618498) internal successors, (1173), 865 states have internal predecessors, (1173), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1373 transitions. [2024-11-27 20:10:20,008 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1373 transitions. Word has length 149 [2024-11-27 20:10:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:20,009 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1373 transitions. [2024-11-27 20:10:20,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1373 transitions. [2024-11-27 20:10:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-27 20:10:20,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:20,011 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:20,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 20:10:20,012 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:20,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1001476380, now seen corresponding path program 1 times [2024-11-27 20:10:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393297953] [2024-11-27 20:10:20,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:24,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:24,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393297953] [2024-11-27 20:10:24,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393297953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:24,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:24,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:10:24,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457061159] [2024-11-27 20:10:24,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:24,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:10:24,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:24,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:10:24,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:10:24,358 INFO L87 Difference]: Start difference. First operand 975 states and 1373 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:26,521 INFO L93 Difference]: Finished difference Result 1993 states and 2828 transitions. [2024-11-27 20:10:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:10:26,522 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 149 [2024-11-27 20:10:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:26,528 INFO L225 Difference]: With dead ends: 1993 [2024-11-27 20:10:26,528 INFO L226 Difference]: Without dead ends: 1453 [2024-11-27 20:10:26,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:10:26,530 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 340 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:26,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 517 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:10:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-11-27 20:10:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 983. [2024-11-27 20:10:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 873 states have (on average 1.3573883161512028) internal successors, (1185), 873 states have internal predecessors, (1185), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1385 transitions. [2024-11-27 20:10:26,637 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1385 transitions. Word has length 149 [2024-11-27 20:10:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:26,637 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1385 transitions. [2024-11-27 20:10:26,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1385 transitions. [2024-11-27 20:10:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:10:26,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:26,640 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:26,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:10:26,640 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:26,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash 337676487, now seen corresponding path program 1 times [2024-11-27 20:10:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642409285] [2024-11-27 20:10:26,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:31,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:31,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642409285] [2024-11-27 20:10:31,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642409285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:31,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:31,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:10:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662166817] [2024-11-27 20:10:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:31,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:10:31,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:31,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:10:31,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:10:31,345 INFO L87 Difference]: Start difference. First operand 983 states and 1385 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:33,516 INFO L93 Difference]: Finished difference Result 1877 states and 2649 transitions. [2024-11-27 20:10:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:10:33,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-27 20:10:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:33,521 INFO L225 Difference]: With dead ends: 1877 [2024-11-27 20:10:33,521 INFO L226 Difference]: Without dead ends: 1649 [2024-11-27 20:10:33,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:10:33,523 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 255 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:33,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 938 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:10:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2024-11-27 20:10:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 991. [2024-11-27 20:10:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 881 states have (on average 1.3654937570942112) internal successors, (1203), 881 states have internal predecessors, (1203), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1403 transitions. [2024-11-27 20:10:33,633 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1403 transitions. Word has length 151 [2024-11-27 20:10:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:33,633 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1403 transitions. [2024-11-27 20:10:33,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1403 transitions. [2024-11-27 20:10:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-27 20:10:33,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:33,635 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:33,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:10:33,636 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:33,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -721713261, now seen corresponding path program 1 times [2024-11-27 20:10:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475994723] [2024-11-27 20:10:33,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475994723] [2024-11-27 20:10:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475994723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:34,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:10:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546626330] [2024-11-27 20:10:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:34,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:10:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:34,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:10:34,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:10:34,008 INFO L87 Difference]: Start difference. First operand 991 states and 1403 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:34,634 INFO L93 Difference]: Finished difference Result 1651 states and 2362 transitions. [2024-11-27 20:10:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:10:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-27 20:10:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:34,639 INFO L225 Difference]: With dead ends: 1651 [2024-11-27 20:10:34,639 INFO L226 Difference]: Without dead ends: 1061 [2024-11-27 20:10:34,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:10:34,641 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 139 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:34,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 592 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:10:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-11-27 20:10:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 981. [2024-11-27 20:10:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 871 states have (on average 1.362801377726751) internal successors, (1187), 871 states have internal predecessors, (1187), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1387 transitions. [2024-11-27 20:10:34,749 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1387 transitions. Word has length 151 [2024-11-27 20:10:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:34,749 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1387 transitions. [2024-11-27 20:10:34,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1387 transitions. [2024-11-27 20:10:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 20:10:34,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:34,752 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:34,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:10:34,752 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:34,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -618318412, now seen corresponding path program 1 times [2024-11-27 20:10:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948565075] [2024-11-27 20:10:34,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948565075] [2024-11-27 20:10:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948565075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:10:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544909675] [2024-11-27 20:10:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:34,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:10:34,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:34,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:10:34,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:10:34,867 INFO L87 Difference]: Start difference. First operand 981 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:35,052 INFO L93 Difference]: Finished difference Result 1843 states and 2656 transitions. [2024-11-27 20:10:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:10:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-11-27 20:10:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:35,059 INFO L225 Difference]: With dead ends: 1843 [2024-11-27 20:10:35,059 INFO L226 Difference]: Without dead ends: 1231 [2024-11-27 20:10:35,061 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 [2024-11-27 20:10:35,062 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 36 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:35,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 242 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:10:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-27 20:10:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1127. [2024-11-27 20:10:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1017 states have (on average 1.3736479842674534) internal successors, (1397), 1017 states have internal predecessors, (1397), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:10:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1597 transitions. [2024-11-27 20:10:35,141 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1597 transitions. Word has length 152 [2024-11-27 20:10:35,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:35,141 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1597 transitions. [2024-11-27 20:10:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:10:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1597 transitions. [2024-11-27 20:10:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:10:35,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:35,143 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:10:35,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:10:35,143 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:35,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1184421737, now seen corresponding path program 1 times [2024-11-27 20:10:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431927455] [2024-11-27 20:10:35,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:10:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:10:53,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:53,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431927455] [2024-11-27 20:10:53,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431927455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:10:53,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:10:53,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 20:10:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009245263] [2024-11-27 20:10:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:10:53,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:10:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:53,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:10:53,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:10:53,592 INFO L87 Difference]: Start difference. First operand 1127 states and 1597 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:02,197 INFO L93 Difference]: Finished difference Result 1545 states and 2082 transitions. [2024-11-27 20:11:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:11:02,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-27 20:11:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:02,203 INFO L225 Difference]: With dead ends: 1545 [2024-11-27 20:11:02,204 INFO L226 Difference]: Without dead ends: 1543 [2024-11-27 20:11:02,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:11:02,205 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 462 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:02,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 857 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 20:11:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-27 20:11:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1183. [2024-11-27 20:11:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1073 states have (on average 1.369990680335508) internal successors, (1470), 1073 states have internal predecessors, (1470), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:11:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1670 transitions. [2024-11-27 20:11:02,277 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1670 transitions. Word has length 154 [2024-11-27 20:11:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:02,277 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1670 transitions. [2024-11-27 20:11:02,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1670 transitions. [2024-11-27 20:11:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:11:02,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:02,279 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:02,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:11:02,279 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:02,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1945752681, now seen corresponding path program 1 times [2024-11-27 20:11:02,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:02,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682024269] [2024-11-27 20:11:02,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:11:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682024269] [2024-11-27 20:11:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682024269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:03,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:11:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174943954] [2024-11-27 20:11:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:03,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:11:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:03,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:11:03,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:11:03,375 INFO L87 Difference]: Start difference. First operand 1183 states and 1670 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:05,673 INFO L93 Difference]: Finished difference Result 2265 states and 3175 transitions. [2024-11-27 20:11:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:11:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-27 20:11:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:05,681 INFO L225 Difference]: With dead ends: 2265 [2024-11-27 20:11:05,681 INFO L226 Difference]: Without dead ends: 1473 [2024-11-27 20:11:05,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:11:05,684 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 261 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:05,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 936 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:11:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-27 20:11:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1247. [2024-11-27 20:11:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1137 states have (on average 1.358839050131926) internal successors, (1545), 1137 states have internal predecessors, (1545), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:11:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1745 transitions. [2024-11-27 20:11:05,826 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1745 transitions. Word has length 154 [2024-11-27 20:11:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:05,827 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1745 transitions. [2024-11-27 20:11:05,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1745 transitions. [2024-11-27 20:11:05,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:11:05,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:05,829 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:05,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:11:05,829 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:05,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash -524890215, now seen corresponding path program 1 times [2024-11-27 20:11:05,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:05,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735013203] [2024-11-27 20:11:05,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:05,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:11:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735013203] [2024-11-27 20:11:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735013203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:28,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:28,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:11:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247756587] [2024-11-27 20:11:28,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:28,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:11:28,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:28,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:11:28,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:11:28,908 INFO L87 Difference]: Start difference. First operand 1247 states and 1745 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:40,145 INFO L93 Difference]: Finished difference Result 1875 states and 2487 transitions. [2024-11-27 20:11:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:11:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-27 20:11:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:40,152 INFO L225 Difference]: With dead ends: 1875 [2024-11-27 20:11:40,152 INFO L226 Difference]: Without dead ends: 1873 [2024-11-27 20:11:40,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:11:40,159 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 663 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:40,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 890 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 20:11:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-27 20:11:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1264. [2024-11-27 20:11:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1153 states have (on average 1.362532523850824) internal successors, (1571), 1153 states have internal predecessors, (1571), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:11:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1771 transitions. [2024-11-27 20:11:40,286 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1771 transitions. Word has length 154 [2024-11-27 20:11:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:40,286 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 1771 transitions. [2024-11-27 20:11:40,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:11:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1771 transitions. [2024-11-27 20:11:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:11:40,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:40,288 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:40,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 20:11:40,289 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:40,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1286221159, now seen corresponding path program 1 times [2024-11-27 20:11:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:40,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738386805] [2024-11-27 20:11:40,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:11:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738386805] [2024-11-27 20:11:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738386805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:40,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:40,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:11:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897632955] [2024-11-27 20:11:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:11:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:40,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:11:40,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:11:40,938 INFO L87 Difference]: Start difference. First operand 1264 states and 1771 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:11:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:42,799 INFO L93 Difference]: Finished difference Result 2238 states and 3136 transitions. [2024-11-27 20:11:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:11:42,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-27 20:11:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:42,805 INFO L225 Difference]: With dead ends: 2238 [2024-11-27 20:11:42,805 INFO L226 Difference]: Without dead ends: 1446 [2024-11-27 20:11:42,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:11:42,808 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 177 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:42,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 897 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:11:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-27 20:11:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1202. [2024-11-27 20:11:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1091 states have (on average 1.3648029330889093) internal successors, (1489), 1091 states have internal predecessors, (1489), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:11:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1689 transitions. [2024-11-27 20:11:42,930 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1689 transitions. Word has length 154 [2024-11-27 20:11:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:42,930 INFO L471 AbstractCegarLoop]: Abstraction has 1202 states and 1689 transitions. [2024-11-27 20:11:42,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:11:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1689 transitions. [2024-11-27 20:11:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:11:42,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:42,932 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:42,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:11:42,932 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:42,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1554249513, now seen corresponding path program 1 times [2024-11-27 20:11:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388743848] [2024-11-27 20:11:42,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:11:45,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:45,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388743848] [2024-11-27 20:11:45,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388743848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:45,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:45,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:11:45,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062320463] [2024-11-27 20:11:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:45,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:11:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:45,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:11:45,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:11:45,777 INFO L87 Difference]: Start difference. First operand 1202 states and 1689 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:11:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:11:47,598 INFO L93 Difference]: Finished difference Result 2112 states and 2984 transitions. [2024-11-27 20:11:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:11:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-27 20:11:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:11:47,604 INFO L225 Difference]: With dead ends: 2112 [2024-11-27 20:11:47,604 INFO L226 Difference]: Without dead ends: 1300 [2024-11-27 20:11:47,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:11:47,606 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 401 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:11:47,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 680 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:11:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-11-27 20:11:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1222. [2024-11-27 20:11:47,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1111 states have (on average 1.3582358235823582) internal successors, (1509), 1111 states have internal predecessors, (1509), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:11:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2024-11-27 20:11:47,720 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 154 [2024-11-27 20:11:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:11:47,720 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2024-11-27 20:11:47,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:11:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2024-11-27 20:11:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:11:47,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:11:47,721 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:47,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 20:11:47,722 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:11:47,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:47,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1719649429, now seen corresponding path program 1 times [2024-11-27 20:11:47,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:47,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767053695] [2024-11-27 20:11:47,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:12:06,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:06,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767053695] [2024-11-27 20:12:06,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767053695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:06,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:06,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 20:12:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672203014] [2024-11-27 20:12:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:06,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:12:06,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:06,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:12:06,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:12:06,497 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:12,278 INFO L93 Difference]: Finished difference Result 1817 states and 2400 transitions. [2024-11-27 20:12:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 20:12:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-27 20:12:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:12,282 INFO L225 Difference]: With dead ends: 1817 [2024-11-27 20:12:12,282 INFO L226 Difference]: Without dead ends: 1815 [2024-11-27 20:12:12,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=489, Invalid=1863, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:12:12,284 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 584 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:12,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 982 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:12:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2024-11-27 20:12:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1234. [2024-11-27 20:12:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1123 states have (on average 1.3615316117542298) internal successors, (1529), 1123 states have internal predecessors, (1529), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:12:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1729 transitions. [2024-11-27 20:12:12,416 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1729 transitions. Word has length 154 [2024-11-27 20:12:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:12,416 INFO L471 AbstractCegarLoop]: Abstraction has 1234 states and 1729 transitions. [2024-11-27 20:12:12,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1729 transitions. [2024-11-27 20:12:12,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 20:12:12,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:12,418 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:12,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 20:12:12,419 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:12,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1657609815, now seen corresponding path program 1 times [2024-11-27 20:12:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270278916] [2024-11-27 20:12:12,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:12:14,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270278916] [2024-11-27 20:12:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270278916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:14,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:12:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188070050] [2024-11-27 20:12:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:14,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:12:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:14,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:12:14,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:12:14,280 INFO L87 Difference]: Start difference. First operand 1234 states and 1729 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:15,843 INFO L93 Difference]: Finished difference Result 2513 states and 3465 transitions. [2024-11-27 20:12:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:12:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-27 20:12:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:15,847 INFO L225 Difference]: With dead ends: 2513 [2024-11-27 20:12:15,847 INFO L226 Difference]: Without dead ends: 1603 [2024-11-27 20:12:15,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:12:15,849 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 290 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:15,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 794 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:12:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2024-11-27 20:12:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1248. [2024-11-27 20:12:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1137 states have (on average 1.3562005277044855) internal successors, (1542), 1137 states have internal predecessors, (1542), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:12:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1742 transitions. [2024-11-27 20:12:15,967 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1742 transitions. Word has length 154 [2024-11-27 20:12:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:15,968 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1742 transitions. [2024-11-27 20:12:15,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1742 transitions. [2024-11-27 20:12:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:12:15,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:15,969 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:15,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 20:12:15,969 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:15,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2085866209, now seen corresponding path program 1 times [2024-11-27 20:12:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902754426] [2024-11-27 20:12:15,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:12:21,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902754426] [2024-11-27 20:12:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902754426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:21,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:12:21,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225650963] [2024-11-27 20:12:21,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:21,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:12:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:21,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:12:21,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:12:21,130 INFO L87 Difference]: Start difference. First operand 1248 states and 1742 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:30,228 INFO L93 Difference]: Finished difference Result 1647 states and 2204 transitions. [2024-11-27 20:12:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:12:30,229 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-27 20:12:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:30,234 INFO L225 Difference]: With dead ends: 1647 [2024-11-27 20:12:30,234 INFO L226 Difference]: Without dead ends: 1645 [2024-11-27 20:12:30,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=294, Invalid=1346, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:12:30,236 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 371 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:30,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1004 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:12:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2024-11-27 20:12:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1330. [2024-11-27 20:12:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1219 states have (on average 1.3552091878589008) internal successors, (1652), 1219 states have internal predecessors, (1652), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:12:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1852 transitions. [2024-11-27 20:12:30,383 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1852 transitions. Word has length 155 [2024-11-27 20:12:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:30,384 INFO L471 AbstractCegarLoop]: Abstraction has 1330 states and 1852 transitions. [2024-11-27 20:12:30,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:12:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1852 transitions. [2024-11-27 20:12:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:12:30,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:30,386 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:12:30,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 20:12:30,386 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:30,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:30,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1056506911, now seen corresponding path program 1 times [2024-11-27 20:12:30,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:30,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635835639] [2024-11-27 20:12:30,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:30,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:12:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635835639] [2024-11-27 20:12:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635835639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:55,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:12:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230516775] [2024-11-27 20:12:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:55,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:12:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:55,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:12:55,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:12:55,886 INFO L87 Difference]: Start difference. First operand 1330 states and 1852 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:02,981 INFO L93 Difference]: Finished difference Result 1494 states and 2024 transitions. [2024-11-27 20:13:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:13:02,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-27 20:13:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:02,986 INFO L225 Difference]: With dead ends: 1494 [2024-11-27 20:13:02,986 INFO L226 Difference]: Without dead ends: 1492 [2024-11-27 20:13:02,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=456, Invalid=1800, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:13:02,987 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 433 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:02,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 841 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 20:13:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-27 20:13:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1272. [2024-11-27 20:13:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1161 states have (on average 1.3505598621877692) internal successors, (1568), 1161 states have internal predecessors, (1568), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:13:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1768 transitions. [2024-11-27 20:13:03,139 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1768 transitions. Word has length 155 [2024-11-27 20:13:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:03,139 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1768 transitions. [2024-11-27 20:13:03,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1768 transitions. [2024-11-27 20:13:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:13:03,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:03,142 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:03,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 20:13:03,142 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:03,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1605726636, now seen corresponding path program 1 times [2024-11-27 20:13:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309807786] [2024-11-27 20:13:03,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:13:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309807786] [2024-11-27 20:13:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309807786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:13:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741239452] [2024-11-27 20:13:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:27,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:13:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:27,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:13:27,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:13:27,396 INFO L87 Difference]: Start difference. First operand 1272 states and 1768 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:34,484 INFO L93 Difference]: Finished difference Result 1659 states and 2220 transitions. [2024-11-27 20:13:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:13:34,484 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-27 20:13:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:34,488 INFO L225 Difference]: With dead ends: 1659 [2024-11-27 20:13:34,488 INFO L226 Difference]: Without dead ends: 1657 [2024-11-27 20:13:34,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:13:34,489 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 371 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:34,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1050 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 20:13:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-27 20:13:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1324. [2024-11-27 20:13:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1213 states have (on average 1.3561417971970322) internal successors, (1645), 1213 states have internal predecessors, (1645), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:13:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1845 transitions. [2024-11-27 20:13:34,587 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1845 transitions. Word has length 158 [2024-11-27 20:13:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:34,587 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 1845 transitions. [2024-11-27 20:13:34,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1845 transitions. [2024-11-27 20:13:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:13:34,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:34,590 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:34,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 20:13:34,590 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:34,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -766012626, now seen corresponding path program 1 times [2024-11-27 20:13:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963009979] [2024-11-27 20:13:34,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:13:35,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963009979] [2024-11-27 20:13:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963009979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:13:35,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151820703] [2024-11-27 20:13:35,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:35,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:13:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:35,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:13:35,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:13:35,601 INFO L87 Difference]: Start difference. First operand 1324 states and 1845 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:37,184 INFO L93 Difference]: Finished difference Result 2385 states and 3320 transitions. [2024-11-27 20:13:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:13:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-27 20:13:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:37,190 INFO L225 Difference]: With dead ends: 2385 [2024-11-27 20:13:37,190 INFO L226 Difference]: Without dead ends: 1530 [2024-11-27 20:13:37,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:13:37,193 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:37,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 648 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:13:37,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-11-27 20:13:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1324. [2024-11-27 20:13:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1213 states have (on average 1.3553173948887056) internal successors, (1644), 1213 states have internal predecessors, (1644), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:13:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1844 transitions. [2024-11-27 20:13:37,351 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1844 transitions. Word has length 158 [2024-11-27 20:13:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:37,352 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 1844 transitions. [2024-11-27 20:13:37,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:13:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1844 transitions. [2024-11-27 20:13:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:13:37,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:37,354 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:37,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 20:13:37,355 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:37,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2029373358, now seen corresponding path program 1 times [2024-11-27 20:13:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502053532] [2024-11-27 20:13:37,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:13:53,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502053532] [2024-11-27 20:13:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502053532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:53,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:13:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:13:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339075116] [2024-11-27 20:13:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:53,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:13:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:53,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:13:53,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:13:53,960 INFO L87 Difference]: Start difference. First operand 1324 states and 1844 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:13:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:58,801 INFO L93 Difference]: Finished difference Result 1983 states and 2616 transitions. [2024-11-27 20:13:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:13:58,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 158 [2024-11-27 20:13:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:58,809 INFO L225 Difference]: With dead ends: 1983 [2024-11-27 20:13:58,809 INFO L226 Difference]: Without dead ends: 1981 [2024-11-27 20:13:58,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 20:13:58,811 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 703 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:58,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1003 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:13:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2024-11-27 20:13:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1359. [2024-11-27 20:13:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1247 states have (on average 1.359262229350441) internal successors, (1695), 1247 states have internal predecessors, (1695), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:13:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1895 transitions. [2024-11-27 20:13:58,989 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1895 transitions. Word has length 158 [2024-11-27 20:13:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:58,990 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1895 transitions. [2024-11-27 20:13:58,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-27 20:13:58,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1895 transitions. [2024-11-27 20:13:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:13:58,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:58,992 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:13:58,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 20:13:58,993 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:58,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:58,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1967333744, now seen corresponding path program 1 times [2024-11-27 20:13:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757245309] [2024-11-27 20:13:58,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:14:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757245309] [2024-11-27 20:14:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757245309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:21,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:21,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:14:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789403329] [2024-11-27 20:14:21,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:21,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:14:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:21,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:14:21,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:14:21,097 INFO L87 Difference]: Start difference. First operand 1359 states and 1895 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:14:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:25,576 INFO L93 Difference]: Finished difference Result 1515 states and 2059 transitions. [2024-11-27 20:14:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:14:25,577 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-27 20:14:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:25,582 INFO L225 Difference]: With dead ends: 1515 [2024-11-27 20:14:25,582 INFO L226 Difference]: Without dead ends: 1513 [2024-11-27 20:14:25,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:14:25,584 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 313 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:25,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 998 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:14:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2024-11-27 20:14:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1348. [2024-11-27 20:14:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1236 states have (on average 1.36084142394822) internal successors, (1682), 1236 states have internal predecessors, (1682), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:14:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1882 transitions. [2024-11-27 20:14:25,757 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1882 transitions. Word has length 158 [2024-11-27 20:14:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:25,758 INFO L471 AbstractCegarLoop]: Abstraction has 1348 states and 1882 transitions. [2024-11-27 20:14:25,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:14:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1882 transitions. [2024-11-27 20:14:25,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:14:25,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:25,761 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:25,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-27 20:14:25,761 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:25,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -342365904, now seen corresponding path program 1 times [2024-11-27 20:14:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130336996] [2024-11-27 20:14:25,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:14:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130336996] [2024-11-27 20:14:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130336996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:26,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:14:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795265095] [2024-11-27 20:14:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:26,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:14:26,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:26,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:14:26,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:14:26,440 INFO L87 Difference]: Start difference. First operand 1348 states and 1882 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:14:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:27,567 INFO L93 Difference]: Finished difference Result 2246 states and 3162 transitions. [2024-11-27 20:14:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:14:27,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-27 20:14:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:27,573 INFO L225 Difference]: With dead ends: 2246 [2024-11-27 20:14:27,573 INFO L226 Difference]: Without dead ends: 1391 [2024-11-27 20:14:27,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:14:27,576 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 154 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:27,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 639 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:14:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-27 20:14:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1287. [2024-11-27 20:14:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1175 states have (on average 1.3693617021276596) internal successors, (1609), 1175 states have internal predecessors, (1609), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:14:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1809 transitions. [2024-11-27 20:14:27,750 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1809 transitions. Word has length 158 [2024-11-27 20:14:27,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:27,751 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1809 transitions. [2024-11-27 20:14:27,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:14:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1809 transitions. [2024-11-27 20:14:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 20:14:27,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:27,753 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:27,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-27 20:14:27,754 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:27,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 222646952, now seen corresponding path program 1 times [2024-11-27 20:14:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:27,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086049878] [2024-11-27 20:14:27,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:14:50,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:50,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086049878] [2024-11-27 20:14:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086049878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:50,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 20:14:50,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132571783] [2024-11-27 20:14:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:50,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:14:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:50,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:14:50,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:14:50,655 INFO L87 Difference]: Start difference. First operand 1287 states and 1809 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:14:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:56,128 INFO L93 Difference]: Finished difference Result 1393 states and 1920 transitions. [2024-11-27 20:14:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:14:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-27 20:14:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:56,133 INFO L225 Difference]: With dead ends: 1393 [2024-11-27 20:14:56,133 INFO L226 Difference]: Without dead ends: 1391 [2024-11-27 20:14:56,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:14:56,135 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 356 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:56,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 900 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 20:14:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-27 20:14:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1225. [2024-11-27 20:14:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1113 states have (on average 1.3683737646001797) internal successors, (1523), 1113 states have internal predecessors, (1523), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:14:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1723 transitions. [2024-11-27 20:14:56,307 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1723 transitions. Word has length 159 [2024-11-27 20:14:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:56,308 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1723 transitions. [2024-11-27 20:14:56,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 20:14:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1723 transitions. [2024-11-27 20:14:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-27 20:14:56,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:56,310 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:56,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-27 20:14:56,311 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:56,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 801312113, now seen corresponding path program 1 times [2024-11-27 20:14:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531990027] [2024-11-27 20:14:56,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:56,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-27 20:14:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:58,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531990027] [2024-11-27 20:14:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531990027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:14:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821784132] [2024-11-27 20:14:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:58,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:14:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:14:58,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:14:58,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:14:58,274 INFO L87 Difference]: Start difference. First operand 1225 states and 1723 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:14:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:59,322 INFO L93 Difference]: Finished difference Result 2255 states and 3169 transitions. [2024-11-27 20:14:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:14:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2024-11-27 20:14:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:59,328 INFO L225 Difference]: With dead ends: 2255 [2024-11-27 20:14:59,328 INFO L226 Difference]: Without dead ends: 1374 [2024-11-27 20:14:59,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:14:59,331 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 166 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:59,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 608 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:14:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-11-27 20:14:59,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1189. [2024-11-27 20:14:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1077 states have (on average 1.3593314763231197) internal successors, (1464), 1077 states have internal predecessors, (1464), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-27 20:14:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1664 transitions. [2024-11-27 20:14:59,510 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1664 transitions. Word has length 159 [2024-11-27 20:14:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:59,511 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1664 transitions. [2024-11-27 20:14:59,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-27 20:14:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1664 transitions. [2024-11-27 20:14:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-27 20:14:59,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:59,516 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-27 20:14:59,516 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:14:59,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1822626617, now seen corresponding path program 1 times [2024-11-27 20:14:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:14:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084611985] [2024-11-27 20:14:59,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:14:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:00,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084611985] [2024-11-27 20:15:00,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084611985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386870077] [2024-11-27 20:15:00,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:00,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:00,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:00,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:15:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:00,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:15:00,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 1656 proven. 2 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-27 20:15:01,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386870077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:01,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:01,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-27 20:15:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431113768] [2024-11-27 20:15:01,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:01,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:15:01,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:01,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:15:01,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:15:01,626 INFO L87 Difference]: Start difference. First operand 1189 states and 1664 transitions. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:15:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:02,636 INFO L93 Difference]: Finished difference Result 4228 states and 5974 transitions. [2024-11-27 20:15:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:15:02,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 285 [2024-11-27 20:15:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:02,646 INFO L225 Difference]: With dead ends: 4228 [2024-11-27 20:15:02,646 INFO L226 Difference]: Without dead ends: 3836 [2024-11-27 20:15:02,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:15:02,648 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 851 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:02,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1005 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:15:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2024-11-27 20:15:02,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 1931. [2024-11-27 20:15:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1767 states have (on average 1.357668364459536) internal successors, (2399), 1771 states have internal predecessors, (2399), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-27 20:15:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2687 transitions. [2024-11-27 20:15:02,903 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2687 transitions. Word has length 285 [2024-11-27 20:15:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:02,903 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2687 transitions. [2024-11-27 20:15:02,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:15:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2687 transitions. [2024-11-27 20:15:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-27 20:15:02,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:02,909 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:02,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:03,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:03,110 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:03,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash -372602249, now seen corresponding path program 1 times [2024-11-27 20:15:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209379468] [2024-11-27 20:15:03,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209379468] [2024-11-27 20:15:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209379468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:03,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669933071] [2024-11-27 20:15:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:03,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:03,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:03,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:03,256 INFO L87 Difference]: Start difference. First operand 1931 states and 2687 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-27 20:15:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:03,506 INFO L93 Difference]: Finished difference Result 3329 states and 4719 transitions. [2024-11-27 20:15:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:03,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 285 [2024-11-27 20:15:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:03,512 INFO L225 Difference]: With dead ends: 3329 [2024-11-27 20:15:03,512 INFO L226 Difference]: Without dead ends: 1928 [2024-11-27 20:15:03,514 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 [2024-11-27 20:15:03,515 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 70 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:03,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 388 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:15:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2024-11-27 20:15:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1926. [2024-11-27 20:15:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1762 states have (on average 1.3530079455164585) internal successors, (2384), 1766 states have internal predecessors, (2384), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-27 20:15:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2672 transitions. [2024-11-27 20:15:03,706 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2672 transitions. Word has length 285 [2024-11-27 20:15:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:03,707 INFO L471 AbstractCegarLoop]: Abstraction has 1926 states and 2672 transitions. [2024-11-27 20:15:03,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-27 20:15:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2672 transitions. [2024-11-27 20:15:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-27 20:15:03,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:03,711 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-27 20:15:03,711 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:03,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1652465927, now seen corresponding path program 1 times [2024-11-27 20:15:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621848637] [2024-11-27 20:15:03,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:04,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:04,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621848637] [2024-11-27 20:15:04,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621848637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:04,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583991001] [2024-11-27 20:15:04,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:04,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:04,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:04,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:04,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:05,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:15:05,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 17 proven. 1641 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-27 20:15:07,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:07,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583991001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:07,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:15:07,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-11-27 20:15:07,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124101158] [2024-11-27 20:15:07,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:07,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:15:07,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:07,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:15:07,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:15:07,803 INFO L87 Difference]: Start difference. First operand 1926 states and 2672 transitions. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:15:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:10,246 INFO L93 Difference]: Finished difference Result 5689 states and 8037 transitions. [2024-11-27 20:15:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:15:10,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 285 [2024-11-27 20:15:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:10,254 INFO L225 Difference]: With dead ends: 5689 [2024-11-27 20:15:10,254 INFO L226 Difference]: Without dead ends: 4293 [2024-11-27 20:15:10,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:15:10,258 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 1132 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:10,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1619 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:15:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2024-11-27 20:15:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2876. [2024-11-27 20:15:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2572 states have (on average 1.3518662519440123) internal successors, (3477), 2580 states have internal predecessors, (3477), 268 states have call successors, (268), 35 states have call predecessors, (268), 35 states have return successors, (268), 260 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-27 20:15:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4013 transitions. [2024-11-27 20:15:10,694 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4013 transitions. Word has length 285 [2024-11-27 20:15:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:10,695 INFO L471 AbstractCegarLoop]: Abstraction has 2876 states and 4013 transitions. [2024-11-27 20:15:10,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:15:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4013 transitions. [2024-11-27 20:15:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-27 20:15:10,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:10,700 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:10,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:10,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:10,900 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:10,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:10,901 INFO L85 PathProgramCache]: Analyzing trace with hash 648977004, now seen corresponding path program 1 times [2024-11-27 20:15:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805999569] [2024-11-27 20:15:10,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:15,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805999569] [2024-11-27 20:15:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805999569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:15,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969171230] [2024-11-27 20:15:15,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:15,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:15,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:15,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:15,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:15:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:16,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:15:16,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 361 proven. 1680 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-11-27 20:15:19,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969171230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:19,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:15:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 29 [2024-11-27 20:15:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415763631] [2024-11-27 20:15:19,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:19,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:15:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:19,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:15:19,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:15:19,636 INFO L87 Difference]: Start difference. First operand 2876 states and 4013 transitions. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-11-27 20:15:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:27,915 INFO L93 Difference]: Finished difference Result 7085 states and 9884 transitions. [2024-11-27 20:15:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-27 20:15:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) Word has length 286 [2024-11-27 20:15:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:27,928 INFO L225 Difference]: With dead ends: 7085 [2024-11-27 20:15:27,928 INFO L226 Difference]: Without dead ends: 4775 [2024-11-27 20:15:27,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1056, Invalid=5586, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 20:15:27,937 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 2362 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:27,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 1807 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 20:15:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-27 20:15:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 3473. [2024-11-27 20:15:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3090 states have (on average 1.3372168284789645) internal successors, (4132), 3100 states have internal predecessors, (4132), 330 states have call successors, (330), 52 states have call predecessors, (330), 52 states have return successors, (330), 320 states have call predecessors, (330), 330 states have call successors, (330) [2024-11-27 20:15:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4792 transitions. [2024-11-27 20:15:28,559 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4792 transitions. Word has length 286 [2024-11-27 20:15:28,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:28,559 INFO L471 AbstractCegarLoop]: Abstraction has 3473 states and 4792 transitions. [2024-11-27 20:15:28,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-11-27 20:15:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4792 transitions. [2024-11-27 20:15:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-27 20:15:28,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:28,568 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:28,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:15:28,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:28,768 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:28,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1412352866, now seen corresponding path program 1 times [2024-11-27 20:15:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387667895] [2024-11-27 20:15:28,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:28,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:15:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387667895] [2024-11-27 20:15:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387667895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:15:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482350237] [2024-11-27 20:15:41,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:41,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:41,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:41,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:15:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:42,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 20:15:42,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 359 proven. 1681 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-11-27 20:15:44,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 34 proven. 141 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-27 20:15:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482350237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:46,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 10, 11] total 42 [2024-11-27 20:15:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679194668] [2024-11-27 20:15:46,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:46,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 20:15:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:46,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 20:15:46,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 20:15:46,551 INFO L87 Difference]: Start difference. First operand 3473 states and 4792 transitions. Second operand has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) [2024-11-27 20:16:21,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-27 20:16:23,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-27 20:16:24,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-27 20:16:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:44,621 INFO L93 Difference]: Finished difference Result 9191 states and 12797 transitions. [2024-11-27 20:16:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-27 20:16:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) Word has length 287 [2024-11-27 20:16:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:44,637 INFO L225 Difference]: With dead ends: 9191 [2024-11-27 20:16:44,637 INFO L226 Difference]: Without dead ends: 6357 [2024-11-27 20:16:44,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=2053, Invalid=11989, Unknown=0, NotChecked=0, Total=14042 [2024-11-27 20:16:44,648 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 3904 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 7320 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 8147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 7320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:44,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 2940 Invalid, 8147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [827 Valid, 7320 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2024-11-27 20:16:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2024-11-27 20:16:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 4641. [2024-11-27 20:16:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4021 states have (on average 1.332255657796568) internal successors, (5357), 4037 states have internal predecessors, (5357), 536 states have call successors, (536), 83 states have call predecessors, (536), 83 states have return successors, (536), 520 states have call predecessors, (536), 536 states have call successors, (536) [2024-11-27 20:16:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6429 transitions. [2024-11-27 20:16:45,542 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6429 transitions. Word has length 287 [2024-11-27 20:16:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:45,542 INFO L471 AbstractCegarLoop]: Abstraction has 4641 states and 6429 transitions. [2024-11-27 20:16:45,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) [2024-11-27 20:16:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6429 transitions. [2024-11-27 20:16:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-27 20:16:45,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:45,552 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:45,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:16:45,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 20:16:45,753 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:45,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash -419369405, now seen corresponding path program 1 times [2024-11-27 20:16:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:45,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172091862] [2024-11-27 20:16:45,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:16:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:16:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:16:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172091862] [2024-11-27 20:16:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172091862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013056585] [2024-11-27 20:16:47,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:47,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:47,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:47,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:16:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:47,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:16:47,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 4 proven. 1654 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-27 20:16:50,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013056585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:55,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:16:55,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15] total 22 [2024-11-27 20:16:55,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230095975] [2024-11-27 20:16:55,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:55,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 20:16:55,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:16:55,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 20:16:55,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:16:55,484 INFO L87 Difference]: Start difference. First operand 4641 states and 6429 transitions. Second operand has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:17:04,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:04,936 INFO L93 Difference]: Finished difference Result 11806 states and 16472 transitions. [2024-11-27 20:17:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-27 20:17:04,936 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 288 [2024-11-27 20:17:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:04,955 INFO L225 Difference]: With dead ends: 11806 [2024-11-27 20:17:04,955 INFO L226 Difference]: Without dead ends: 8244 [2024-11-27 20:17:04,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1171, Invalid=5309, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 20:17:04,965 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 2105 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:04,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 3079 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 20:17:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2024-11-27 20:17:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 7505. [2024-11-27 20:17:06,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 6498 states have (on average 1.3362573099415205) internal successors, (8683), 6521 states have internal predecessors, (8683), 873 states have call successors, (873), 133 states have call predecessors, (873), 133 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) [2024-11-27 20:17:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 10429 transitions. [2024-11-27 20:17:06,273 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 10429 transitions. Word has length 288 [2024-11-27 20:17:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:06,274 INFO L471 AbstractCegarLoop]: Abstraction has 7505 states and 10429 transitions. [2024-11-27 20:17:06,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:17:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 10429 transitions. [2024-11-27 20:17:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-27 20:17:06,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:06,283 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:06,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:17:06,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:06,484 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:06,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:06,485 INFO L85 PathProgramCache]: Analyzing trace with hash 989745219, now seen corresponding path program 1 times [2024-11-27 20:17:06,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:06,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644974047] [2024-11-27 20:17:06,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:17:20,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644974047] [2024-11-27 20:17:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644974047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:20,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086479766] [2024-11-27 20:17:20,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:20,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:20,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:20,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:17:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:21,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 20:17:21,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 611 proven. 1800 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-27 20:17:26,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086479766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:28,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:17:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2024-11-27 20:17:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481877679] [2024-11-27 20:17:28,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:28,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 20:17:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:17:28,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 20:17:28,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 20:17:28,461 INFO L87 Difference]: Start difference. First operand 7505 states and 10429 transitions. Second operand has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-11-27 20:17:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:54,105 INFO L93 Difference]: Finished difference Result 15922 states and 22084 transitions. [2024-11-27 20:17:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-27 20:17:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) Word has length 288 [2024-11-27 20:17:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:54,130 INFO L225 Difference]: With dead ends: 15922 [2024-11-27 20:17:54,130 INFO L226 Difference]: Without dead ends: 8866 [2024-11-27 20:17:54,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6430 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1531, Invalid=17929, Unknown=0, NotChecked=0, Total=19460 [2024-11-27 20:17:54,143 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 2220 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 8310 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 8707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 8310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:54,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 4062 Invalid, 8707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [397 Valid, 8310 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2024-11-27 20:17:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2024-11-27 20:17:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8004. [2024-11-27 20:17:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8004 states, 6849 states have (on average 1.3324572930354797) internal successors, (9126), 6874 states have internal predecessors, (9126), 987 states have call successors, (987), 167 states have call predecessors, (987), 167 states have return successors, (987), 962 states have call predecessors, (987), 987 states have call successors, (987) [2024-11-27 20:17:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 11100 transitions. [2024-11-27 20:17:55,680 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 11100 transitions. Word has length 288 [2024-11-27 20:17:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:55,680 INFO L471 AbstractCegarLoop]: Abstraction has 8004 states and 11100 transitions. [2024-11-27 20:17:55,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-11-27 20:17:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 11100 transitions. [2024-11-27 20:17:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-27 20:17:55,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:55,689 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:55,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:17:55,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:55,890 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:17:55,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1818550934, now seen corresponding path program 1 times [2024-11-27 20:17:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:17:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786899977] [2024-11-27 20:17:55,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:17:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786899977] [2024-11-27 20:17:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786899977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941364194] [2024-11-27 20:17:59,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:59,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:59,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:59,762 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:59,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:18:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:00,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 20:18:00,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 4 proven. 1655 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-27 20:18:03,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:18:52,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941364194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:18:52,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:18:52,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-27 20:18:52,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835799395] [2024-11-27 20:18:52,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:18:52,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:18:52,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:18:52,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:18:52,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1120, Unknown=1, NotChecked=0, Total=1260 [2024-11-27 20:18:52,923 INFO L87 Difference]: Start difference. First operand 8004 states and 11100 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:19:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:10,982 INFO L93 Difference]: Finished difference Result 25907 states and 35815 transitions. [2024-11-27 20:19:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-27 20:19:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 289 [2024-11-27 20:19:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:11,019 INFO L225 Difference]: With dead ends: 25907 [2024-11-27 20:19:11,019 INFO L226 Difference]: Without dead ends: 20036 [2024-11-27 20:19:11,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4168 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=2417, Invalid=11624, Unknown=1, NotChecked=0, Total=14042 [2024-11-27 20:19:11,035 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 2940 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 5759 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 6218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 5759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:11,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 4720 Invalid, 6218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [459 Valid, 5759 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-27 20:19:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2024-11-27 20:19:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 12415. [2024-11-27 20:19:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12415 states, 10514 states have (on average 1.3296556971656839) internal successors, (13980), 10561 states have internal predecessors, (13980), 1621 states have call successors, (1621), 279 states have call predecessors, (1621), 279 states have return successors, (1621), 1574 states have call predecessors, (1621), 1621 states have call successors, (1621) [2024-11-27 20:19:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 17222 transitions. [2024-11-27 20:19:13,299 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 17222 transitions. Word has length 289 [2024-11-27 20:19:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:13,299 INFO L471 AbstractCegarLoop]: Abstraction has 12415 states and 17222 transitions. [2024-11-27 20:19:13,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:19:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 17222 transitions. [2024-11-27 20:19:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-27 20:19:13,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:13,305 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:13,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:19:13,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:13,506 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:13,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -965341800, now seen corresponding path program 1 times [2024-11-27 20:19:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654146562] [2024-11-27 20:19:13,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:19:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654146562] [2024-11-27 20:19:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654146562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134401226] [2024-11-27 20:19:16,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:16,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:16,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:16,339 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:19:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:16,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:19:16,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 165 proven. 1704 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-11-27 20:19:19,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:19:28,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134401226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:28,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:19:28,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2024-11-27 20:19:28,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067090591] [2024-11-27 20:19:28,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:19:28,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:19:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:28,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:19:28,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:19:28,102 INFO L87 Difference]: Start difference. First operand 12415 states and 17222 transitions. Second operand has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:19:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:34,757 INFO L93 Difference]: Finished difference Result 28204 states and 39047 transitions. [2024-11-27 20:19:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:19:34,758 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 289 [2024-11-27 20:19:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:34,790 INFO L225 Difference]: With dead ends: 28204 [2024-11-27 20:19:34,791 INFO L226 Difference]: Without dead ends: 17320 [2024-11-27 20:19:34,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=427, Invalid=1553, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:19:34,809 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 1367 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:34,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 1763 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:19:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17320 states. [2024-11-27 20:19:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17320 to 12909. [2024-11-27 20:19:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12909 states, 10920 states have (on average 1.3263736263736263) internal successors, (14484), 10968 states have internal predecessors, (14484), 1672 states have call successors, (1672), 316 states have call predecessors, (1672), 316 states have return successors, (1672), 1624 states have call predecessors, (1672), 1672 states have call successors, (1672) [2024-11-27 20:19:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12909 states to 12909 states and 17828 transitions. [2024-11-27 20:19:36,819 INFO L78 Accepts]: Start accepts. Automaton has 12909 states and 17828 transitions. Word has length 289 [2024-11-27 20:19:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:36,819 INFO L471 AbstractCegarLoop]: Abstraction has 12909 states and 17828 transitions. [2024-11-27 20:19:36,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-27 20:19:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12909 states and 17828 transitions. [2024-11-27 20:19:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-27 20:19:36,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:36,825 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:36,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:19:37,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:37,025 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 809665562, now seen corresponding path program 1 times [2024-11-27 20:19:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017957300] [2024-11-27 20:19:37,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-27 20:19:40,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:40,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017957300] [2024-11-27 20:19:40,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017957300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:19:40,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407887348] [2024-11-27 20:19:40,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:40,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:40,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_958d5ed3-bee8-44b0-8eb7-b051fc46e307/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:19:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:40,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:19:40,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 4 proven. 1655 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-27 20:19:44,923 INFO L312 TraceCheckSpWp]: Computing backward predicates...