./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.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_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/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_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/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_a8948933-8083-4f26-84f0-43f996da1a81/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 c469b75cc3acec0afb4777ccbc446a0a894bfe2960322167d3fdb024eb8caf56 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:50:18,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:50:18,387 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:50:18,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:50:18,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:50:18,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:50:18,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:50:18,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:50:18,436 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:50:18,436 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:50:18,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:50:18,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:50:18,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:50:18,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:50:18,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:50:18,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:50:18,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:50:18,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:50:18,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:50:18,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:50:18,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:50:18,440 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_a8948933-8083-4f26-84f0-43f996da1a81/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 -> c469b75cc3acec0afb4777ccbc446a0a894bfe2960322167d3fdb024eb8caf56 [2024-11-28 03:50:18,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:50:18,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:50:18,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:50:18,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:50:18,779 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:50:18,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.i [2024-11-28 03:50:21,616 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/data/449fe81d6/5beb277ea84b4221809e22fa18cca536/FLAGdc55e4e7e [2024-11-28 03:50:21,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:50:21,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.i [2024-11-28 03:50:21,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/data/449fe81d6/5beb277ea84b4221809e22fa18cca536/FLAGdc55e4e7e [2024-11-28 03:50:22,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/data/449fe81d6/5beb277ea84b4221809e22fa18cca536 [2024-11-28 03:50:22,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:50:22,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:50:22,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:50:22,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:50:22,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:50:22,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4003e1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22, skipping insertion in model container [2024-11-28 03:50:22,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:50:22,247 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_a8948933-8083-4f26-84f0-43f996da1a81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.i[916,929] [2024-11-28 03:50:22,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:50:22,363 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:50:22,378 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_a8948933-8083-4f26-84f0-43f996da1a81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-92.i[916,929] [2024-11-28 03:50:22,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:50:22,447 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:50:22,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22 WrapperNode [2024-11-28 03:50:22,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:50:22,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:50:22,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:50:22,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:50:22,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,519 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 309 [2024-11-28 03:50:22,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:50:22,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:50:22,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:50:22,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:50:22,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,538 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,578 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:50:22,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,598 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:50:22,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:50:22,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:50:22,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:50:22,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (1/1) ... [2024-11-28 03:50:22,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:50:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:50:22,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:50:22,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:50:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:50:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:50:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:50:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:50:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:50:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:50:22,761 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:50:22,763 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:50:23,514 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-28 03:50:23,515 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:50:23,531 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:50:23,531 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:50:23,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:50:23 BoogieIcfgContainer [2024-11-28 03:50:23,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:50:23,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:50:23,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:50:23,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:50:23,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:50:22" (1/3) ... [2024-11-28 03:50:23,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e060d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:50:23, skipping insertion in model container [2024-11-28 03:50:23,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:50:22" (2/3) ... [2024-11-28 03:50:23,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e060d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:50:23, skipping insertion in model container [2024-11-28 03:50:23,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:50:23" (3/3) ... [2024-11-28 03:50:23,544 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-92.i [2024-11-28 03:50:23,562 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:50:23,563 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-while_file-92.i that has 2 procedures, 127 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:50:23,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:50:23,648 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;@299d76e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:50:23,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:50:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 102 states have (on average 1.5) internal successors, (153), 103 states have internal predecessors, (153), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 03:50:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:50:23,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:23,670 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:23,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:23,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 452485311, now seen corresponding path program 1 times [2024-11-28 03:50:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479192606] [2024-11-28 03:50:23,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-28 03:50:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479192606] [2024-11-28 03:50:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479192606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:50:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422782312] [2024-11-28 03:50:24,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:24,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:50:24,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:50:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:50:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:24,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:50:24,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:50:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-28 03:50:24,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:50:24,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422782312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:24,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:50:24,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:50:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619701663] [2024-11-28 03:50:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:24,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:50:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:24,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:50:24,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:50:24,394 INFO L87 Difference]: Start difference. First operand has 127 states, 102 states have (on average 1.5) internal successors, (153), 103 states have internal predecessors, (153), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 03:50:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:24,426 INFO L93 Difference]: Finished difference Result 247 states and 410 transitions. [2024-11-28 03:50:24,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:50:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 159 [2024-11-28 03:50:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:24,435 INFO L225 Difference]: With dead ends: 247 [2024-11-28 03:50:24,436 INFO L226 Difference]: Without dead ends: 123 [2024-11-28 03:50:24,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:50:24,442 INFO L435 NwaCegarLoop]: 190 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, 190 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:24,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:50:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-28 03:50:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-28 03:50:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 99 states have internal predecessors, (146), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 03:50:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 190 transitions. [2024-11-28 03:50:24,488 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 190 transitions. Word has length 159 [2024-11-28 03:50:24,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:24,489 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 190 transitions. [2024-11-28 03:50:24,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 03:50:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 190 transitions. [2024-11-28 03:50:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 03:50:24,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:24,495 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:24,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:50:24,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:50:24,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:24,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:24,700 INFO L85 PathProgramCache]: Analyzing trace with hash -91128893, now seen corresponding path program 1 times [2024-11-28 03:50:24,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:24,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817294854] [2024-11-28 03:50:24,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:24,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:50:25,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:25,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817294854] [2024-11-28 03:50:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817294854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:50:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37325489] [2024-11-28 03:50:25,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:25,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:50:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:25,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:50:25,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:25,414 INFO L87 Difference]: Start difference. First operand 123 states and 190 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:25,586 INFO L93 Difference]: Finished difference Result 363 states and 564 transitions. [2024-11-28 03:50:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:50:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 159 [2024-11-28 03:50:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:25,593 INFO L225 Difference]: With dead ends: 363 [2024-11-28 03:50:25,593 INFO L226 Difference]: Without dead ends: 243 [2024-11-28 03:50:25,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:50:25,597 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 135 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:25,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 427 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:50:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-28 03:50:25,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2024-11-28 03:50:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 194 states have (on average 1.4742268041237114) internal successors, (286), 194 states have internal predecessors, (286), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 03:50:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 374 transitions. [2024-11-28 03:50:25,653 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 374 transitions. Word has length 159 [2024-11-28 03:50:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:25,654 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 374 transitions. [2024-11-28 03:50:25,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 374 transitions. [2024-11-28 03:50:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:50:25,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:25,661 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:25,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:50:25,661 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:25,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash -874005863, now seen corresponding path program 1 times [2024-11-28 03:50:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870258020] [2024-11-28 03:50:25,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:50:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:26,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870258020] [2024-11-28 03:50:26,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870258020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:26,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:26,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:50:26,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014805823] [2024-11-28 03:50:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:26,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:50:26,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:26,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:50:26,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:50:26,345 INFO L87 Difference]: Start difference. First operand 241 states and 374 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:26,910 INFO L93 Difference]: Finished difference Result 1075 states and 1655 transitions. [2024-11-28 03:50:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:50:26,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:50:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:26,924 INFO L225 Difference]: With dead ends: 1075 [2024-11-28 03:50:26,924 INFO L226 Difference]: Without dead ends: 837 [2024-11-28 03:50:26,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:50:26,930 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 476 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:26,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 747 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:50:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-11-28 03:50:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 489. [2024-11-28 03:50:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 396 states have (on average 1.4848484848484849) internal successors, (588), 396 states have internal predecessors, (588), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 03:50:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 764 transitions. [2024-11-28 03:50:27,062 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 764 transitions. Word has length 160 [2024-11-28 03:50:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:27,064 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 764 transitions. [2024-11-28 03:50:27,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 764 transitions. [2024-11-28 03:50:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:50:27,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:27,071 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:27,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:50:27,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:27,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash -739992357, now seen corresponding path program 1 times [2024-11-28 03:50:27,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:27,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772964452] [2024-11-28 03:50:27,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:50:28,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:28,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772964452] [2024-11-28 03:50:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772964452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:28,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:28,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:50:28,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837884467] [2024-11-28 03:50:28,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:28,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:50:28,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:28,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:50:28,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:50:28,411 INFO L87 Difference]: Start difference. First operand 489 states and 764 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:29,999 INFO L93 Difference]: Finished difference Result 1304 states and 2017 transitions. [2024-11-28 03:50:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:50:30,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:50:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:30,007 INFO L225 Difference]: With dead ends: 1304 [2024-11-28 03:50:30,007 INFO L226 Difference]: Without dead ends: 1060 [2024-11-28 03:50:30,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:50:30,009 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 1344 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:30,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 897 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:50:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2024-11-28 03:50:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 626. [2024-11-28 03:50:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 518 states have (on average 1.4961389961389961) internal successors, (775), 519 states have internal predecessors, (775), 102 states have call successors, (102), 5 states have call predecessors, (102), 5 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 03:50:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 979 transitions. [2024-11-28 03:50:30,105 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 979 transitions. Word has length 160 [2024-11-28 03:50:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:30,106 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 979 transitions. [2024-11-28 03:50:30,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:50:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 979 transitions. [2024-11-28 03:50:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:50:30,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:30,111 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:30,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:50:30,111 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:30,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1142759509, now seen corresponding path program 1 times [2024-11-28 03:50:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181005321] [2024-11-28 03:50:30,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:50:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:57,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181005321] [2024-11-28 03:50:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181005321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:50:57,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:50:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:50:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041507627] [2024-11-28 03:50:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:50:57,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:50:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:57,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:50:57,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:50:57,492 INFO L87 Difference]: Start difference. First operand 626 states and 979 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:04,189 INFO L93 Difference]: Finished difference Result 2333 states and 3609 transitions. [2024-11-28 03:51:04,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:51:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:51:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:04,200 INFO L225 Difference]: With dead ends: 2333 [2024-11-28 03:51:04,200 INFO L226 Difference]: Without dead ends: 1710 [2024-11-28 03:51:04,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:51:04,203 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 558 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:04,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 621 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 03:51:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-28 03:51:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 847. [2024-11-28 03:51:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 739 states have (on average 1.5331529093369418) internal successors, (1133), 740 states have internal predecessors, (1133), 102 states have call successors, (102), 5 states have call predecessors, (102), 5 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 03:51:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1337 transitions. [2024-11-28 03:51:04,276 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1337 transitions. Word has length 160 [2024-11-28 03:51:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:04,276 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1337 transitions. [2024-11-28 03:51:04,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1337 transitions. [2024-11-28 03:51:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:51:04,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:04,280 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:51:04,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:51:04,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:04,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash -923904791, now seen corresponding path program 1 times [2024-11-28 03:51:04,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:04,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915764341] [2024-11-28 03:51:04,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:04,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:51:10,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915764341] [2024-11-28 03:51:10,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915764341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:51:10,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:51:10,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:51:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676349024] [2024-11-28 03:51:10,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:51:10,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:51:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:51:10,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:51:10,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:51:10,269 INFO L87 Difference]: Start difference. First operand 847 states and 1337 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:13,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:13,875 INFO L93 Difference]: Finished difference Result 2363 states and 3688 transitions. [2024-11-28 03:51:13,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:51:13,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:51:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:13,885 INFO L225 Difference]: With dead ends: 2363 [2024-11-28 03:51:13,885 INFO L226 Difference]: Without dead ends: 1519 [2024-11-28 03:51:13,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:51:13,890 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 394 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:13,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 756 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:51:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2024-11-28 03:51:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 847. [2024-11-28 03:51:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 739 states have (on average 1.5331529093369418) internal successors, (1133), 740 states have internal predecessors, (1133), 102 states have call successors, (102), 5 states have call predecessors, (102), 5 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 03:51:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1337 transitions. [2024-11-28 03:51:13,961 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1337 transitions. Word has length 160 [2024-11-28 03:51:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:13,961 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1337 transitions. [2024-11-28 03:51:13,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1337 transitions. [2024-11-28 03:51:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:51:13,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:13,967 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:51:13,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:51:13,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:13,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1100840619, now seen corresponding path program 1 times [2024-11-28 03:51:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308598024] [2024-11-28 03:51:13,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:51:45,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308598024] [2024-11-28 03:51:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308598024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:51:45,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:51:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:51:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258647114] [2024-11-28 03:51:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:51:45,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:51:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:51:45,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:51:45,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:51:45,550 INFO L87 Difference]: Start difference. First operand 847 states and 1337 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:50,786 INFO L93 Difference]: Finished difference Result 2363 states and 3688 transitions. [2024-11-28 03:51:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:51:50,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:51:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:50,795 INFO L225 Difference]: With dead ends: 2363 [2024-11-28 03:51:50,795 INFO L226 Difference]: Without dead ends: 1519 [2024-11-28 03:51:50,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:51:50,798 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 410 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:50,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 649 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 03:51:50,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2024-11-28 03:51:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 852. [2024-11-28 03:51:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 744 states have (on average 1.5362903225806452) internal successors, (1143), 745 states have internal predecessors, (1143), 102 states have call successors, (102), 5 states have call predecessors, (102), 5 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-28 03:51:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1347 transitions. [2024-11-28 03:51:50,867 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1347 transitions. Word has length 160 [2024-11-28 03:51:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:50,867 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1347 transitions. [2024-11-28 03:51:50,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1347 transitions. [2024-11-28 03:51:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:51:50,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:50,871 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:51:50,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:51:50,871 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:50,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1319695337, now seen corresponding path program 1 times [2024-11-28 03:51:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601335258] [2024-11-28 03:51:50,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:51:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:51:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601335258] [2024-11-28 03:51:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601335258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:51:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:51:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:51:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553445827] [2024-11-28 03:51:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:51:51,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:51:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:51:51,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:51:51,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:51:51,131 INFO L87 Difference]: Start difference. First operand 852 states and 1347 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:51:51,553 INFO L93 Difference]: Finished difference Result 3558 states and 5627 transitions. [2024-11-28 03:51:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:51:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 160 [2024-11-28 03:51:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:51:51,566 INFO L225 Difference]: With dead ends: 3558 [2024-11-28 03:51:51,566 INFO L226 Difference]: Without dead ends: 2709 [2024-11-28 03:51:51,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:51:51,570 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 464 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:51:51,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 955 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:51:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2024-11-28 03:51:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2428. [2024-11-28 03:51:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2173 states have (on average 1.5425678785089738) internal successors, (3352), 2180 states have internal predecessors, (3352), 239 states have call successors, (239), 15 states have call predecessors, (239), 15 states have return successors, (239), 232 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-28 03:51:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3830 transitions. [2024-11-28 03:51:51,730 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3830 transitions. Word has length 160 [2024-11-28 03:51:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:51:51,730 INFO L471 AbstractCegarLoop]: Abstraction has 2428 states and 3830 transitions. [2024-11-28 03:51:51,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:51:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3830 transitions. [2024-11-28 03:51:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:51:51,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:51:51,739 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:51:51,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:51:51,744 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:51:51,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:51:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash -76017107, now seen corresponding path program 1 times [2024-11-28 03:51:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:51:51,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656806244] [2024-11-28 03:51:51,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:51:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:51:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:12,711 WARN L286 SmtUtils]: Spent 12.94s on a formula simplification. DAG size of input: 193 DAG size of output: 133 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:53:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:53:12,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:12,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656806244] [2024-11-28 03:53:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656806244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:53:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026198811] [2024-11-28 03:53:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:12,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:53:12,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:12,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:53:12,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:53:12,763 INFO L87 Difference]: Start difference. First operand 2428 states and 3830 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:43,625 INFO L93 Difference]: Finished difference Result 7272 states and 11307 transitions. [2024-11-28 03:53:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:53:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-11-28 03:53:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:43,643 INFO L225 Difference]: With dead ends: 7272 [2024-11-28 03:53:43,643 INFO L226 Difference]: Without dead ends: 4847 [2024-11-28 03:53:43,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:53:43,650 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 638 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:43,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1388 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2024-11-28 03:53:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2024-11-28 03:53:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 2428. [2024-11-28 03:53:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2173 states have (on average 1.5425678785089738) internal successors, (3352), 2180 states have internal predecessors, (3352), 239 states have call successors, (239), 15 states have call predecessors, (239), 15 states have return successors, (239), 232 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-28 03:53:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3830 transitions. [2024-11-28 03:53:43,824 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3830 transitions. Word has length 161 [2024-11-28 03:53:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:43,824 INFO L471 AbstractCegarLoop]: Abstraction has 2428 states and 3830 transitions. [2024-11-28 03:53:43,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3830 transitions. [2024-11-28 03:53:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 03:53:43,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:43,829 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:43,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:53:43,829 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:43,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1698214191, now seen corresponding path program 1 times [2024-11-28 03:53:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693717589] [2024-11-28 03:53:43,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:53:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693717589] [2024-11-28 03:53:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693717589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:44,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:44,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:53:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45248140] [2024-11-28 03:53:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:44,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:53:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:44,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:53:44,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:53:44,051 INFO L87 Difference]: Start difference. First operand 2428 states and 3830 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:44,435 INFO L93 Difference]: Finished difference Result 7145 states and 11136 transitions. [2024-11-28 03:53:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:53:44,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 161 [2024-11-28 03:53:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:44,461 INFO L225 Difference]: With dead ends: 7145 [2024-11-28 03:53:44,461 INFO L226 Difference]: Without dead ends: 4720 [2024-11-28 03:53:44,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:53:44,468 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 282 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:44,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 632 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:53:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2024-11-28 03:53:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 4134. [2024-11-28 03:53:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 3625 states have (on average 1.5117241379310344) internal successors, (5480), 3639 states have internal predecessors, (5480), 478 states have call successors, (478), 30 states have call predecessors, (478), 30 states have return successors, (478), 464 states have call predecessors, (478), 478 states have call successors, (478) [2024-11-28 03:53:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6436 transitions. [2024-11-28 03:53:44,781 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6436 transitions. Word has length 161 [2024-11-28 03:53:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 4134 states and 6436 transitions. [2024-11-28 03:53:44,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6436 transitions. [2024-11-28 03:53:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:53:44,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:44,787 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:44,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:53:44,788 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:44,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 73866247, now seen corresponding path program 1 times [2024-11-28 03:53:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57477715] [2024-11-28 03:53:44,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:53:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57477715] [2024-11-28 03:53:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57477715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:45,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:45,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:53:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982787073] [2024-11-28 03:53:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:45,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:53:45,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:45,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:53:45,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:53:45,644 INFO L87 Difference]: Start difference. First operand 4134 states and 6436 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:53:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:47,680 INFO L93 Difference]: Finished difference Result 19977 states and 30760 transitions. [2024-11-28 03:53:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:53:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 163 [2024-11-28 03:53:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:47,744 INFO L225 Difference]: With dead ends: 19977 [2024-11-28 03:53:47,744 INFO L226 Difference]: Without dead ends: 15846 [2024-11-28 03:53:47,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:53:47,757 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 883 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:47,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1451 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:53:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15846 states. [2024-11-28 03:53:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15846 to 10740. [2024-11-28 03:53:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 9931 states have (on average 1.5160608196556238) internal successors, (15056), 9955 states have internal predecessors, (15056), 752 states have call successors, (752), 56 states have call predecessors, (752), 56 states have return successors, (752), 728 states have call predecessors, (752), 752 states have call successors, (752) [2024-11-28 03:53:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 16560 transitions. [2024-11-28 03:53:48,650 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 16560 transitions. Word has length 163 [2024-11-28 03:53:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:48,651 INFO L471 AbstractCegarLoop]: Abstraction has 10740 states and 16560 transitions. [2024-11-28 03:53:48,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:53:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 16560 transitions. [2024-11-28 03:53:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:53:48,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:48,663 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:48,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:53:48,664 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:48,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash 11826633, now seen corresponding path program 1 times [2024-11-28 03:53:48,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:48,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589020025] [2024-11-28 03:53:48,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 03:53:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589020025] [2024-11-28 03:53:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589020025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:53:52,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:53:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:53:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046925004] [2024-11-28 03:53:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:53:52,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:53:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:53:52,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:53:52,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:53:52,945 INFO L87 Difference]: Start difference. First operand 10740 states and 16560 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:56,389 INFO L93 Difference]: Finished difference Result 17170 states and 26311 transitions. [2024-11-28 03:53:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:53:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 163 [2024-11-28 03:53:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:56,436 INFO L225 Difference]: With dead ends: 17170 [2024-11-28 03:53:56,437 INFO L226 Difference]: Without dead ends: 15548 [2024-11-28 03:53:56,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:53:56,444 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 252 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:56,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1195 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:53:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15548 states. [2024-11-28 03:53:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15548 to 15519. [2024-11-28 03:53:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15519 states, 14425 states have (on average 1.5087694974003467) internal successors, (21764), 14480 states have internal predecessors, (21764), 998 states have call successors, (998), 95 states have call predecessors, (998), 95 states have return successors, (998), 943 states have call predecessors, (998), 998 states have call successors, (998) [2024-11-28 03:53:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15519 states to 15519 states and 23760 transitions. [2024-11-28 03:53:57,617 INFO L78 Accepts]: Start accepts. Automaton has 15519 states and 23760 transitions. Word has length 163 [2024-11-28 03:53:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:57,619 INFO L471 AbstractCegarLoop]: Abstraction has 15519 states and 23760 transitions. [2024-11-28 03:53:57,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-28 03:53:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15519 states and 23760 transitions. [2024-11-28 03:53:57,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 03:53:57,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:57,631 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:57,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:53:57,633 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:53:57,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 139786024, now seen corresponding path program 1 times [2024-11-28 03:53:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:53:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394950063] [2024-11-28 03:53:57,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-11-28 03:53:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:53:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394950063] [2024-11-28 03:53:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394950063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:58,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415853340] [2024-11-28 03:53:58,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:58,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:58,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:58,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:58,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8948933-8083-4f26-84f0-43f996da1a81/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:53:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:58,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:53:58,213 INFO L279 TraceCheckSpWp]: Computing forward predicates...