./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c --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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/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 c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:55:46,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:55:46,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:55:46,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:55:46,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:55:46,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:55:46,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:55:46,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:55:46,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:55:46,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:55:46,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:55:46,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:55:46,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:55:46,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:55:46,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:55:46,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:55:46,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:55:46,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:55:46,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:55:46,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:55:46,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:55:46,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:55:46,643 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:55:46,644 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:55:46,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:46,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:46,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:46,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:46,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:55:46,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:55:46,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:55:46,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:55:46,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:46,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:55:46,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:55:46,647 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:55:46,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:55:46,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:55:46,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:55:46,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:55:46,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:55:46,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:55:46,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:55:46,648 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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/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 -> c371ce1f15a8888766c33a9703b06847f70d6274570c9b062f0d05b5c6caa625 [2024-11-28 03:55:47,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:55:47,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:55:47,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:55:47,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:55:47,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:55:47,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-28 03:55:50,595 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/data/3fbbbfa4d/1e395cc8200b496f9e42c0958b7ed08a/FLAG13717c06d [2024-11-28 03:55:51,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:55:51,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/sv-benchmarks/c/eca-rers2012/Problem17_label34.c [2024-11-28 03:55:51,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/data/3fbbbfa4d/1e395cc8200b496f9e42c0958b7ed08a/FLAG13717c06d [2024-11-28 03:55:51,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/data/3fbbbfa4d/1e395cc8200b496f9e42c0958b7ed08a [2024-11-28 03:55:51,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:55:51,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:55:51,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:51,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:55:51,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:55:51,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:51" (1/1) ... [2024-11-28 03:55:51,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0fdf37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:51, skipping insertion in model container [2024-11-28 03:55:51,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:55:51" (1/1) ... [2024-11-28 03:55:51,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:55:51,776 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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2024-11-28 03:55:52,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:52,816 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:55:52,844 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_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/sv-benchmarks/c/eca-rers2012/Problem17_label34.c[2983,2996] [2024-11-28 03:55:53,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:55:53,387 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:55:53,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53 WrapperNode [2024-11-28 03:55:53,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:55:53,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:53,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:55:53,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:55:53,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:53,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:53,835 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-28 03:55:53,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:55:53,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:55:53,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:55:53,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:55:53,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:53,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:53,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,124 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 03:55:54,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,259 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:55:54,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:55:54,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:55:54,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:55:54,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (1/1) ... [2024-11-28 03:55:54,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:55:54,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:55:54,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:55:54,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:55:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:55:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:55:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:55:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:55:54,734 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:55:54,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:56:00,155 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-28 03:56:00,155 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:56:00,193 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:56:00,193 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:56:00,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:56:00 BoogieIcfgContainer [2024-11-28 03:56:00,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:56:00,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:56:00,199 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:56:00,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:56:00,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:55:51" (1/3) ... [2024-11-28 03:56:00,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762eb72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:56:00, skipping insertion in model container [2024-11-28 03:56:00,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:55:53" (2/3) ... [2024-11-28 03:56:00,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762eb72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:56:00, skipping insertion in model container [2024-11-28 03:56:00,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:56:00" (3/3) ... [2024-11-28 03:56:00,209 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2024-11-28 03:56:00,228 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:56:00,230 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label34.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:56:00,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:56:00,393 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;@6d9df582, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:56:00,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:56:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:56:00,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:00,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:00,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:00,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 406614337, now seen corresponding path program 1 times [2024-11-28 03:56:00,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:00,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891301002] [2024-11-28 03:56:00,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:00,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891301002] [2024-11-28 03:56:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891301002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:00,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:00,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:56:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438022289] [2024-11-28 03:56:00,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:00,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:00,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:00,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:00,816 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:05,086 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-28 03:56:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 03:56:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:05,117 INFO L225 Difference]: With dead ends: 1642 [2024-11-28 03:56:05,118 INFO L226 Difference]: Without dead ends: 975 [2024-11-28 03:56:05,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:56:05,130 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 471 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:05,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 03:56:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-28 03:56:05,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-28 03:56:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-28 03:56:05,267 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 19 [2024-11-28 03:56:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:05,268 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-28 03:56:05,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-28 03:56:05,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:56:05,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:05,275 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:05,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:56:05,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:05,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash 952084788, now seen corresponding path program 1 times [2024-11-28 03:56:05,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:05,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923874291] [2024-11-28 03:56:05,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923874291] [2024-11-28 03:56:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923874291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507295542] [2024-11-28 03:56:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:06,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:56:06,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:06,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:56:06,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:56:06,272 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:11,866 INFO L93 Difference]: Finished difference Result 3735 states and 5654 transitions. [2024-11-28 03:56:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:56:11,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-28 03:56:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:11,877 INFO L225 Difference]: With dead ends: 3735 [2024-11-28 03:56:11,877 INFO L226 Difference]: Without dead ends: 2765 [2024-11-28 03:56:11,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:56:11,879 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 899 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:11,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 314 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 03:56:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2024-11-28 03:56:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2724. [2024-11-28 03:56:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.3944179214102093) internal successors, (3797), 2723 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3797 transitions. [2024-11-28 03:56:11,951 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3797 transitions. Word has length 89 [2024-11-28 03:56:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:11,952 INFO L471 AbstractCegarLoop]: Abstraction has 2724 states and 3797 transitions. [2024-11-28 03:56:11,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3797 transitions. [2024-11-28 03:56:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 03:56:11,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:11,956 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:11,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:56:11,956 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:11,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1747470320, now seen corresponding path program 1 times [2024-11-28 03:56:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207226041] [2024-11-28 03:56:11,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207226041] [2024-11-28 03:56:12,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207226041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:12,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:12,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:56:12,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909176942] [2024-11-28 03:56:12,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:12,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:12,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:12,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:12,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:12,504 INFO L87 Difference]: Start difference. First operand 2724 states and 3797 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:15,660 INFO L93 Difference]: Finished difference Result 6325 states and 8834 transitions. [2024-11-28 03:56:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-28 03:56:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:15,673 INFO L225 Difference]: With dead ends: 6325 [2024-11-28 03:56:15,673 INFO L226 Difference]: Without dead ends: 3603 [2024-11-28 03:56:15,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:56:15,681 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:15,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:56:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2024-11-28 03:56:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3583. [2024-11-28 03:56:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3604131769960917) internal successors, (4873), 3582 states have internal predecessors, (4873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4873 transitions. [2024-11-28 03:56:15,761 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4873 transitions. Word has length 124 [2024-11-28 03:56:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:15,763 INFO L471 AbstractCegarLoop]: Abstraction has 3583 states and 4873 transitions. [2024-11-28 03:56:15,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4873 transitions. [2024-11-28 03:56:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 03:56:15,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:15,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:15,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:56:15,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:15,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:15,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2113039039, now seen corresponding path program 1 times [2024-11-28 03:56:15,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866651126] [2024-11-28 03:56:15,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:15,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866651126] [2024-11-28 03:56:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866651126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:15,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:15,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:56:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313403863] [2024-11-28 03:56:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:15,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:15,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:15,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:15,997 INFO L87 Difference]: Start difference. First operand 3583 states and 4873 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:18,259 INFO L93 Difference]: Finished difference Result 9293 states and 12695 transitions. [2024-11-28 03:56:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:18,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-11-28 03:56:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:18,272 INFO L225 Difference]: With dead ends: 9293 [2024-11-28 03:56:18,273 INFO L226 Difference]: Without dead ends: 4853 [2024-11-28 03:56:18,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:56:18,278 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 348 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:18,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 03:56:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2024-11-28 03:56:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4001. [2024-11-28 03:56:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 4000 states have (on average 1.22775) internal successors, (4911), 4000 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 4911 transitions. [2024-11-28 03:56:18,364 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 4911 transitions. Word has length 130 [2024-11-28 03:56:18,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:18,365 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 4911 transitions. [2024-11-28 03:56:18,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 4911 transitions. [2024-11-28 03:56:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 03:56:18,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:18,369 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:18,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:56:18,369 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:18,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1935512509, now seen corresponding path program 1 times [2024-11-28 03:56:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284002651] [2024-11-28 03:56:18,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 03:56:18,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:18,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284002651] [2024-11-28 03:56:18,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284002651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:18,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:18,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664889465] [2024-11-28 03:56:18,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:18,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:18,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:18,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:18,587 INFO L87 Difference]: Start difference. First operand 4001 states and 4911 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:20,970 INFO L93 Difference]: Finished difference Result 10125 states and 12629 transitions. [2024-11-28 03:56:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-28 03:56:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:20,986 INFO L225 Difference]: With dead ends: 10125 [2024-11-28 03:56:20,986 INFO L226 Difference]: Without dead ends: 6126 [2024-11-28 03:56:20,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:20,991 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 441 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:20,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 03:56:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2024-11-28 03:56:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 3978. [2024-11-28 03:56:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3977 states have (on average 1.2260497862710587) internal successors, (4876), 3977 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 4876 transitions. [2024-11-28 03:56:21,079 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 4876 transitions. Word has length 173 [2024-11-28 03:56:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:21,080 INFO L471 AbstractCegarLoop]: Abstraction has 3978 states and 4876 transitions. [2024-11-28 03:56:21,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 4876 transitions. [2024-11-28 03:56:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-28 03:56:21,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:21,082 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:21,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:56:21,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -330707048, now seen corresponding path program 1 times [2024-11-28 03:56:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872430230] [2024-11-28 03:56:21,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:56:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872430230] [2024-11-28 03:56:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872430230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:21,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:56:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074151930] [2024-11-28 03:56:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:21,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:56:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:21,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:56:21,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:56:21,525 INFO L87 Difference]: Start difference. First operand 3978 states and 4876 transitions. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:24,215 INFO L93 Difference]: Finished difference Result 10524 states and 13152 transitions. [2024-11-28 03:56:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:56:24,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-28 03:56:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:24,232 INFO L225 Difference]: With dead ends: 10524 [2024-11-28 03:56:24,232 INFO L226 Difference]: Without dead ends: 6548 [2024-11-28 03:56:24,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:56:24,237 INFO L435 NwaCegarLoop]: 739 mSDtfsCounter, 1151 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:24,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 827 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:56:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2024-11-28 03:56:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6535. [2024-11-28 03:56:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 1.2058463422099786) internal successors, (7879), 6534 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 7879 transitions. [2024-11-28 03:56:24,345 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 7879 transitions. Word has length 180 [2024-11-28 03:56:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:24,346 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 7879 transitions. [2024-11-28 03:56:24,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 7879 transitions. [2024-11-28 03:56:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 03:56:24,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:24,349 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:24,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:56:24,350 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 75287222, now seen corresponding path program 1 times [2024-11-28 03:56:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475082056] [2024-11-28 03:56:24,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:56:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475082056] [2024-11-28 03:56:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475082056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047825402] [2024-11-28 03:56:24,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:24,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:24,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:24,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:56:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:24,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:56:25,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 172 proven. 70 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:56:25,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:56:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047825402] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:25,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:25,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-28 03:56:25,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259255318] [2024-11-28 03:56:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:25,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:56:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:25,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:56:25,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:56:25,625 INFO L87 Difference]: Start difference. First operand 6535 states and 7879 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:29,724 INFO L93 Difference]: Finished difference Result 21183 states and 25861 transitions. [2024-11-28 03:56:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:56:29,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-11-28 03:56:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:29,760 INFO L225 Difference]: With dead ends: 21183 [2024-11-28 03:56:29,760 INFO L226 Difference]: Without dead ends: 14218 [2024-11-28 03:56:29,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:56:29,766 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:29,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 162 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:56:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2024-11-28 03:56:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14216. [2024-11-28 03:56:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14216 states, 14215 states have (on average 1.1974674639465352) internal successors, (17022), 14215 states have internal predecessors, (17022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 17022 transitions. [2024-11-28 03:56:30,093 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 17022 transitions. Word has length 243 [2024-11-28 03:56:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:30,094 INFO L471 AbstractCegarLoop]: Abstraction has 14216 states and 17022 transitions. [2024-11-28 03:56:30,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 17022 transitions. [2024-11-28 03:56:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-28 03:56:30,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:30,099 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:30,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:56:30,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:30,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:30,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1432519742, now seen corresponding path program 1 times [2024-11-28 03:56:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:30,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172164435] [2024-11-28 03:56:30,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:56:30,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172164435] [2024-11-28 03:56:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172164435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:30,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:30,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62417668] [2024-11-28 03:56:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:30,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:30,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:30,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:30,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:30,628 INFO L87 Difference]: Start difference. First operand 14216 states and 17022 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:33,444 INFO L93 Difference]: Finished difference Result 31407 states and 37752 transitions. [2024-11-28 03:56:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:33,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2024-11-28 03:56:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:33,485 INFO L225 Difference]: With dead ends: 31407 [2024-11-28 03:56:33,486 INFO L226 Difference]: Without dead ends: 16767 [2024-11-28 03:56:33,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:33,596 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 372 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:33,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 905 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 03:56:33,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2024-11-28 03:56:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16767. [2024-11-28 03:56:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16767 states, 16766 states have (on average 1.1703447453179052) internal successors, (19622), 16766 states have internal predecessors, (19622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16767 states to 16767 states and 19622 transitions. [2024-11-28 03:56:33,923 INFO L78 Accepts]: Start accepts. Automaton has 16767 states and 19622 transitions. Word has length 256 [2024-11-28 03:56:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:33,924 INFO L471 AbstractCegarLoop]: Abstraction has 16767 states and 19622 transitions. [2024-11-28 03:56:33,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 16767 states and 19622 transitions. [2024-11-28 03:56:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 03:56:33,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:33,933 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:33,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:56:33,934 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:33,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -928589185, now seen corresponding path program 1 times [2024-11-28 03:56:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780614081] [2024-11-28 03:56:33,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 03:56:34,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:34,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780614081] [2024-11-28 03:56:34,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780614081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:34,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:34,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:34,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882097918] [2024-11-28 03:56:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:34,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:34,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:34,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:34,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:34,350 INFO L87 Difference]: Start difference. First operand 16767 states and 19622 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:36,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:36,710 INFO L93 Difference]: Finished difference Result 36513 states and 42736 transitions. [2024-11-28 03:56:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-11-28 03:56:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:36,750 INFO L225 Difference]: With dead ends: 36513 [2024-11-28 03:56:36,750 INFO L226 Difference]: Without dead ends: 19323 [2024-11-28 03:56:36,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:36,765 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 422 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:36,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 906 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 03:56:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19323 states. [2024-11-28 03:56:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19323 to 19321. [2024-11-28 03:56:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19321 states, 19320 states have (on average 1.1544513457556935) internal successors, (22304), 19320 states have internal predecessors, (22304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19321 states to 19321 states and 22304 transitions. [2024-11-28 03:56:37,097 INFO L78 Accepts]: Start accepts. Automaton has 19321 states and 22304 transitions. Word has length 257 [2024-11-28 03:56:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:37,098 INFO L471 AbstractCegarLoop]: Abstraction has 19321 states and 22304 transitions. [2024-11-28 03:56:37,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 19321 states and 22304 transitions. [2024-11-28 03:56:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-28 03:56:37,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:37,104 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:56:37,105 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 499316572, now seen corresponding path program 1 times [2024-11-28 03:56:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756041849] [2024-11-28 03:56:37,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:37,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-28 03:56:37,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:37,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756041849] [2024-11-28 03:56:37,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756041849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:37,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:37,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:37,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452083213] [2024-11-28 03:56:37,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:37,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:37,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:37,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:37,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:37,376 INFO L87 Difference]: Start difference. First operand 19321 states and 22304 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:40,092 INFO L93 Difference]: Finished difference Result 50546 states and 58025 transitions. [2024-11-28 03:56:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:40,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2024-11-28 03:56:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:40,145 INFO L225 Difference]: With dead ends: 50546 [2024-11-28 03:56:40,145 INFO L226 Difference]: Without dead ends: 30794 [2024-11-28 03:56:40,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:40,165 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 450 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:40,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 420 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:56:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2024-11-28 03:56:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 28239. [2024-11-28 03:56:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28239 states, 28238 states have (on average 1.12929385933848) internal successors, (31889), 28238 states have internal predecessors, (31889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28239 states to 28239 states and 31889 transitions. [2024-11-28 03:56:40,701 INFO L78 Accepts]: Start accepts. Automaton has 28239 states and 31889 transitions. Word has length 291 [2024-11-28 03:56:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:40,702 INFO L471 AbstractCegarLoop]: Abstraction has 28239 states and 31889 transitions. [2024-11-28 03:56:40,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 28239 states and 31889 transitions. [2024-11-28 03:56:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-28 03:56:40,711 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:40,711 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:40,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:56:40,712 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:40,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 530058454, now seen corresponding path program 1 times [2024-11-28 03:56:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:40,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634141517] [2024-11-28 03:56:40,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:40,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-28 03:56:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:41,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634141517] [2024-11-28 03:56:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634141517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:41,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545239434] [2024-11-28 03:56:41,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:41,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:41,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:41,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:41,076 INFO L87 Difference]: Start difference. First operand 28239 states and 31889 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:43,838 INFO L93 Difference]: Finished difference Result 66262 states and 75098 transitions. [2024-11-28 03:56:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 309 [2024-11-28 03:56:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:43,877 INFO L225 Difference]: With dead ends: 66262 [2024-11-28 03:56:43,877 INFO L226 Difference]: Without dead ends: 36748 [2024-11-28 03:56:43,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:43,890 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 342 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:43,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 776 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 03:56:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36748 states. [2024-11-28 03:56:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36748 to 35471. [2024-11-28 03:56:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35471 states, 35470 states have (on average 1.1106287003101212) internal successors, (39394), 35470 states have internal predecessors, (39394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35471 states to 35471 states and 39394 transitions. [2024-11-28 03:56:44,358 INFO L78 Accepts]: Start accepts. Automaton has 35471 states and 39394 transitions. Word has length 309 [2024-11-28 03:56:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:44,359 INFO L471 AbstractCegarLoop]: Abstraction has 35471 states and 39394 transitions. [2024-11-28 03:56:44,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:44,360 INFO L276 IsEmpty]: Start isEmpty. Operand 35471 states and 39394 transitions. [2024-11-28 03:56:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-28 03:56:44,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:44,365 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:44,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:56:44,365 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash 2093736345, now seen corresponding path program 1 times [2024-11-28 03:56:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392107366] [2024-11-28 03:56:44,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 03:56:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:45,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392107366] [2024-11-28 03:56:45,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392107366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:45,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889020281] [2024-11-28 03:56:45,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:45,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:45,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:45,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:45,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:56:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:45,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:56:45,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 313 proven. 73 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 03:56:45,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 03:56:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889020281] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:56:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-28 03:56:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91864416] [2024-11-28 03:56:46,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:46,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:56:46,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:46,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:56:46,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:56:46,197 INFO L87 Difference]: Start difference. First operand 35471 states and 39394 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:50,720 INFO L93 Difference]: Finished difference Result 85427 states and 94984 transitions. [2024-11-28 03:56:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:56:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-11-28 03:56:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:50,766 INFO L225 Difference]: With dead ends: 85427 [2024-11-28 03:56:50,766 INFO L226 Difference]: Without dead ends: 49531 [2024-11-28 03:56:50,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:56:50,785 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 841 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:50,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 187 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 03:56:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49531 states. [2024-11-28 03:56:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49531 to 46978. [2024-11-28 03:56:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46978 states, 46977 states have (on average 1.1148647210336973) internal successors, (52373), 46977 states have internal predecessors, (52373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46978 states to 46978 states and 52373 transitions. [2024-11-28 03:56:51,426 INFO L78 Accepts]: Start accepts. Automaton has 46978 states and 52373 transitions. Word has length 317 [2024-11-28 03:56:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:51,426 INFO L471 AbstractCegarLoop]: Abstraction has 46978 states and 52373 transitions. [2024-11-28 03:56:51,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 46978 states and 52373 transitions. [2024-11-28 03:56:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-28 03:56:51,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:51,438 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:51,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:56:51,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:56:51,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:51,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1144793932, now seen corresponding path program 1 times [2024-11-28 03:56:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738639244] [2024-11-28 03:56:51,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-28 03:56:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738639244] [2024-11-28 03:56:52,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738639244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:52,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:52,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93441695] [2024-11-28 03:56:52,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:52,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:52,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:52,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:52,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:52,202 INFO L87 Difference]: Start difference. First operand 46978 states and 52373 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:55,330 INFO L93 Difference]: Finished difference Result 114426 states and 127136 transitions. [2024-11-28 03:56:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:56:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2024-11-28 03:56:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:55,390 INFO L225 Difference]: With dead ends: 114426 [2024-11-28 03:56:55,390 INFO L226 Difference]: Without dead ends: 67024 [2024-11-28 03:56:55,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:55,415 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 472 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:55,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 348 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:56:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67024 states. [2024-11-28 03:56:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67024 to 65710. [2024-11-28 03:56:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65710 states, 65709 states have (on average 1.1053584744859912) internal successors, (72632), 65709 states have internal predecessors, (72632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65710 states to 65710 states and 72632 transitions. [2024-11-28 03:56:56,567 INFO L78 Accepts]: Start accepts. Automaton has 65710 states and 72632 transitions. Word has length 415 [2024-11-28 03:56:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:56,569 INFO L471 AbstractCegarLoop]: Abstraction has 65710 states and 72632 transitions. [2024-11-28 03:56:56,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:56:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 65710 states and 72632 transitions. [2024-11-28 03:56:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-28 03:56:56,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:56,585 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:56,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:56:56,586 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:56,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1100011165, now seen corresponding path program 1 times [2024-11-28 03:56:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802229472] [2024-11-28 03:56:56,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-28 03:56:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:57,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802229472] [2024-11-28 03:56:57,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802229472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:57,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:57,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:56:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980774950] [2024-11-28 03:56:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:57,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:56:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:57,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:56:57,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:56:57,338 INFO L87 Difference]: Start difference. First operand 65710 states and 72632 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:00,334 INFO L93 Difference]: Finished difference Result 145895 states and 161356 transitions. [2024-11-28 03:57:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:00,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2024-11-28 03:57:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:00,436 INFO L225 Difference]: With dead ends: 145895 [2024-11-28 03:57:00,436 INFO L226 Difference]: Without dead ends: 79761 [2024-11-28 03:57:00,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:00,472 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 489 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:00,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 301 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:57:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79761 states. [2024-11-28 03:57:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79761 to 60579. [2024-11-28 03:57:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60579 states, 60578 states have (on average 1.1075142791112285) internal successors, (67091), 60578 states have internal predecessors, (67091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60579 states to 60579 states and 67091 transitions. [2024-11-28 03:57:01,598 INFO L78 Accepts]: Start accepts. Automaton has 60579 states and 67091 transitions. Word has length 442 [2024-11-28 03:57:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:01,600 INFO L471 AbstractCegarLoop]: Abstraction has 60579 states and 67091 transitions. [2024-11-28 03:57:01,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60579 states and 67091 transitions. [2024-11-28 03:57:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-28 03:57:01,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:01,620 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:01,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:57:01,620 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:01,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash -63934917, now seen corresponding path program 1 times [2024-11-28 03:57:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:01,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197474928] [2024-11-28 03:57:01,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 03:57:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197474928] [2024-11-28 03:57:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197474928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902017071] [2024-11-28 03:57:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:02,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:02,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:02,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:02,475 INFO L87 Difference]: Start difference. First operand 60579 states and 67091 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:05,613 INFO L93 Difference]: Finished difference Result 133504 states and 147828 transitions. [2024-11-28 03:57:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2024-11-28 03:57:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:05,707 INFO L225 Difference]: With dead ends: 133504 [2024-11-28 03:57:05,707 INFO L226 Difference]: Without dead ends: 72495 [2024-11-28 03:57:05,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:05,742 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 502 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:05,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 169 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:57:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72495 states. [2024-11-28 03:57:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72495 to 69501. [2024-11-28 03:57:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69501 states, 69500 states have (on average 1.1070071942446043) internal successors, (76937), 69500 states have internal predecessors, (76937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69501 states to 69501 states and 76937 transitions. [2024-11-28 03:57:06,863 INFO L78 Accepts]: Start accepts. Automaton has 69501 states and 76937 transitions. Word has length 454 [2024-11-28 03:57:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:06,863 INFO L471 AbstractCegarLoop]: Abstraction has 69501 states and 76937 transitions. [2024-11-28 03:57:06,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 69501 states and 76937 transitions. [2024-11-28 03:57:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-28 03:57:06,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:06,871 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:06,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:57:06,872 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:06,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1567427203, now seen corresponding path program 1 times [2024-11-28 03:57:06,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:06,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624820076] [2024-11-28 03:57:06,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:06,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:57:08,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:08,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624820076] [2024-11-28 03:57:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624820076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693193790] [2024-11-28 03:57:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:08,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:08,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:08,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:08,099 INFO L87 Difference]: Start difference. First operand 69501 states and 76937 transitions. Second operand has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:12,768 INFO L93 Difference]: Finished difference Result 164575 states and 182145 transitions. [2024-11-28 03:57:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2024-11-28 03:57:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:12,848 INFO L225 Difference]: With dead ends: 164575 [2024-11-28 03:57:12,848 INFO L226 Difference]: Without dead ends: 95076 [2024-11-28 03:57:12,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:12,882 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 639 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:12,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 175 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 03:57:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95076 states. [2024-11-28 03:57:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95076 to 89537. [2024-11-28 03:57:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89537 states, 89536 states have (on average 1.1079342387419586) internal successors, (99200), 89536 states have internal predecessors, (99200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89537 states to 89537 states and 99200 transitions. [2024-11-28 03:57:14,183 INFO L78 Accepts]: Start accepts. Automaton has 89537 states and 99200 transitions. Word has length 475 [2024-11-28 03:57:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:14,183 INFO L471 AbstractCegarLoop]: Abstraction has 89537 states and 99200 transitions. [2024-11-28 03:57:14,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 89537 states and 99200 transitions. [2024-11-28 03:57:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-28 03:57:14,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:14,191 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:14,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:57:14,192 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:14,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1379758595, now seen corresponding path program 1 times [2024-11-28 03:57:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858553366] [2024-11-28 03:57:14,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:14,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:57:15,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858553366] [2024-11-28 03:57:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858553366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539090218] [2024-11-28 03:57:15,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:15,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:15,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:15,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:57:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:15,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:57:15,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:57:17,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:57:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 263 proven. 82 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:57:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539090218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:57:19,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:57:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-28 03:57:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800259881] [2024-11-28 03:57:19,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:57:19,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:57:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:19,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:57:19,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:57:19,761 INFO L87 Difference]: Start difference. First operand 89537 states and 99200 transitions. Second operand has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:28,958 INFO L93 Difference]: Finished difference Result 204184 states and 226147 transitions. [2024-11-28 03:57:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:57:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2024-11-28 03:57:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:29,056 INFO L225 Difference]: With dead ends: 204184 [2024-11-28 03:57:29,056 INFO L226 Difference]: Without dead ends: 113799 [2024-11-28 03:57:29,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:57:29,088 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 3024 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 5933 mSolverCounterSat, 1257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 7190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1257 IncrementalHoareTripleChecker+Valid, 5933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:29,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 317 Invalid, 7190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1257 Valid, 5933 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-28 03:57:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113799 states. [2024-11-28 03:57:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113799 to 104420. [2024-11-28 03:57:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104420 states, 104419 states have (on average 1.1082370066750304) internal successors, (115721), 104419 states have internal predecessors, (115721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104420 states to 104420 states and 115721 transitions. [2024-11-28 03:57:30,702 INFO L78 Accepts]: Start accepts. Automaton has 104420 states and 115721 transitions. Word has length 518 [2024-11-28 03:57:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:30,703 INFO L471 AbstractCegarLoop]: Abstraction has 104420 states and 115721 transitions. [2024-11-28 03:57:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 104420 states and 115721 transitions. [2024-11-28 03:57:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2024-11-28 03:57:30,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:30,713 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:30,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:57:30,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d3c426-beb3-4dac-9f4d-2ce66cf6e5b6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:57:30,914 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:30,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1004549033, now seen corresponding path program 1 times [2024-11-28 03:57:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388562397] [2024-11-28 03:57:30,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 03:57:31,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:31,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388562397] [2024-11-28 03:57:31,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388562397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:31,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217512518] [2024-11-28 03:57:31,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:31,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:31,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:31,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:31,359 INFO L87 Difference]: Start difference. First operand 104420 states and 115721 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:34,054 INFO L93 Difference]: Finished difference Result 206276 states and 228612 transitions. [2024-11-28 03:57:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 523 [2024-11-28 03:57:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:34,163 INFO L225 Difference]: With dead ends: 206276 [2024-11-28 03:57:34,163 INFO L226 Difference]: Without dead ends: 101857 [2024-11-28 03:57:34,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:34,211 INFO L435 NwaCegarLoop]: 655 mSDtfsCounter, 479 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:34,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 717 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:57:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101857 states. [2024-11-28 03:57:35,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101857 to 98024. [2024-11-28 03:57:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98024 states, 98023 states have (on average 1.0869999897983127) internal successors, (106551), 98023 states have internal predecessors, (106551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98024 states to 98024 states and 106551 transitions. [2024-11-28 03:57:35,572 INFO L78 Accepts]: Start accepts. Automaton has 98024 states and 106551 transitions. Word has length 523 [2024-11-28 03:57:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:35,572 INFO L471 AbstractCegarLoop]: Abstraction has 98024 states and 106551 transitions. [2024-11-28 03:57:35,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 98024 states and 106551 transitions. [2024-11-28 03:57:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-28 03:57:35,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:35,807 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:35,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:57:35,807 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:35,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1874865253, now seen corresponding path program 1 times [2024-11-28 03:57:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074396023] [2024-11-28 03:57:35,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:35,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 03:57:37,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074396023] [2024-11-28 03:57:37,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074396023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:37,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:37,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:37,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538858240] [2024-11-28 03:57:37,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:37,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:37,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:37,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:37,033 INFO L87 Difference]: Start difference. First operand 98024 states and 106551 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:41,002 INFO L93 Difference]: Finished difference Result 213519 states and 232155 transitions. [2024-11-28 03:57:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 604 [2024-11-28 03:57:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:41,104 INFO L225 Difference]: With dead ends: 213519 [2024-11-28 03:57:41,104 INFO L226 Difference]: Without dead ends: 115497 [2024-11-28 03:57:41,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:41,137 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 538 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:41,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 653 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:57:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115497 states. [2024-11-28 03:57:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115497 to 111645. [2024-11-28 03:57:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111645 states, 111644 states have (on average 1.0894181505499623) internal successors, (121627), 111644 states have internal predecessors, (121627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111645 states to 111645 states and 121627 transitions. [2024-11-28 03:57:42,665 INFO L78 Accepts]: Start accepts. Automaton has 111645 states and 121627 transitions. Word has length 604 [2024-11-28 03:57:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:42,666 INFO L471 AbstractCegarLoop]: Abstraction has 111645 states and 121627 transitions. [2024-11-28 03:57:42,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 111645 states and 121627 transitions. [2024-11-28 03:57:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2024-11-28 03:57:42,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:42,680 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:42,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:57:42,680 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:42,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1557473164, now seen corresponding path program 1 times [2024-11-28 03:57:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916152723] [2024-11-28 03:57:42,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-28 03:57:43,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916152723] [2024-11-28 03:57:43,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916152723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:43,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:43,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:57:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27044599] [2024-11-28 03:57:43,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:43,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:43,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:43,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:43,692 INFO L87 Difference]: Start difference. First operand 111645 states and 121627 transitions. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:46,025 INFO L93 Difference]: Finished difference Result 219442 states and 238906 transitions. [2024-11-28 03:57:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:46,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 615 [2024-11-28 03:57:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:46,141 INFO L225 Difference]: With dead ends: 219442 [2024-11-28 03:57:46,141 INFO L226 Difference]: Without dead ends: 107799 [2024-11-28 03:57:46,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:57:46,183 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 431 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:46,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 98 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:57:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107799 states. [2024-11-28 03:57:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107799 to 107370. [2024-11-28 03:57:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107370 states, 107369 states have (on average 1.0880142312958117) internal successors, (116819), 107369 states have internal predecessors, (116819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107370 states to 107370 states and 116819 transitions. [2024-11-28 03:57:47,900 INFO L78 Accepts]: Start accepts. Automaton has 107370 states and 116819 transitions. Word has length 615 [2024-11-28 03:57:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:47,901 INFO L471 AbstractCegarLoop]: Abstraction has 107370 states and 116819 transitions. [2024-11-28 03:57:47,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 107370 states and 116819 transitions. [2024-11-28 03:57:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2024-11-28 03:57:47,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:47,916 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:47,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:57:47,917 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:47,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1519841183, now seen corresponding path program 1 times [2024-11-28 03:57:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212594391] [2024-11-28 03:57:47,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 03:57:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212594391] [2024-11-28 03:57:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212594391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:48,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570800343] [2024-11-28 03:57:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:48,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:48,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:48,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:48,947 INFO L87 Difference]: Start difference. First operand 107370 states and 116819 transitions. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:54,356 INFO L93 Difference]: Finished difference Result 238170 states and 258629 transitions. [2024-11-28 03:57:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:54,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 648 [2024-11-28 03:57:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:54,472 INFO L225 Difference]: With dead ends: 238170 [2024-11-28 03:57:54,473 INFO L226 Difference]: Without dead ends: 129523 [2024-11-28 03:57:54,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:54,503 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 761 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:54,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 163 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 03:57:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129523 states. [2024-11-28 03:57:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129523 to 120130. [2024-11-28 03:57:55,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120130 states, 120129 states have (on average 1.0883383695860283) internal successors, (130741), 120129 states have internal predecessors, (130741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120130 states to 120130 states and 130741 transitions. [2024-11-28 03:57:56,130 INFO L78 Accepts]: Start accepts. Automaton has 120130 states and 130741 transitions. Word has length 648 [2024-11-28 03:57:56,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:56,132 INFO L471 AbstractCegarLoop]: Abstraction has 120130 states and 130741 transitions. [2024-11-28 03:57:56,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:57:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 120130 states and 130741 transitions. [2024-11-28 03:57:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-28 03:57:56,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:56,167 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:57:56,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:57:56,168 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:56,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 517758705, now seen corresponding path program 1 times [2024-11-28 03:57:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:56,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547256700] [2024-11-28 03:57:56,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 03:57:57,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547256700] [2024-11-28 03:57:57,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547256700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:57,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:57,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61698598] [2024-11-28 03:57:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:57,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:57,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:57,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:57,746 INFO L87 Difference]: Start difference. First operand 120130 states and 130741 transitions. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:02,122 INFO L93 Difference]: Finished difference Result 246664 states and 268267 transitions. [2024-11-28 03:58:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:58:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 667 [2024-11-28 03:58:02,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:02,256 INFO L225 Difference]: With dead ends: 246664 [2024-11-28 03:58:02,256 INFO L226 Difference]: Without dead ends: 126108 [2024-11-28 03:58:02,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:58:02,315 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 1228 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:02,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 641 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:58:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126108 states. [2024-11-28 03:58:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126108 to 120972. [2024-11-28 03:58:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120972 states, 120971 states have (on average 1.0860784816195617) internal successors, (131384), 120971 states have internal predecessors, (131384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120972 states to 120972 states and 131384 transitions. [2024-11-28 03:58:04,740 INFO L78 Accepts]: Start accepts. Automaton has 120972 states and 131384 transitions. Word has length 667 [2024-11-28 03:58:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:04,741 INFO L471 AbstractCegarLoop]: Abstraction has 120972 states and 131384 transitions. [2024-11-28 03:58:04,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 120972 states and 131384 transitions. [2024-11-28 03:58:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2024-11-28 03:58:04,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:04,767 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:04,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:58:04,767 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:04,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1279939234, now seen corresponding path program 1 times [2024-11-28 03:58:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:04,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551358378] [2024-11-28 03:58:04,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-28 03:58:05,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:05,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551358378] [2024-11-28 03:58:05,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551358378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:05,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:05,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:58:05,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582844783] [2024-11-28 03:58:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:05,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:05,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:05,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:05,836 INFO L87 Difference]: Start difference. First operand 120972 states and 131384 transitions. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:09,105 INFO L93 Difference]: Finished difference Result 255564 states and 277160 transitions. [2024-11-28 03:58:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:09,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 673 [2024-11-28 03:58:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:09,726 INFO L225 Difference]: With dead ends: 255564 [2024-11-28 03:58:09,726 INFO L226 Difference]: Without dead ends: 129476 [2024-11-28 03:58:09,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:09,767 INFO L435 NwaCegarLoop]: 604 mSDtfsCounter, 307 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:09,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 635 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:58:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129476 states. [2024-11-28 03:58:11,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129476 to 122235. [2024-11-28 03:58:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122235 states, 122234 states have (on average 1.076958947592323) internal successors, (131641), 122234 states have internal predecessors, (131641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122235 states to 122235 states and 131641 transitions. [2024-11-28 03:58:11,439 INFO L78 Accepts]: Start accepts. Automaton has 122235 states and 131641 transitions. Word has length 673 [2024-11-28 03:58:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:11,440 INFO L471 AbstractCegarLoop]: Abstraction has 122235 states and 131641 transitions. [2024-11-28 03:58:11,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 122235 states and 131641 transitions. [2024-11-28 03:58:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2024-11-28 03:58:11,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:11,456 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:11,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:58:11,456 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:11,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash -91029827, now seen corresponding path program 1 times [2024-11-28 03:58:11,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:11,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101077663] [2024-11-28 03:58:11,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:11,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-28 03:58:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101077663] [2024-11-28 03:58:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101077663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:12,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:58:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35320239] [2024-11-28 03:58:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:12,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:12,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:12,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:12,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:12,486 INFO L87 Difference]: Start difference. First operand 122235 states and 131641 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:15,607 INFO L93 Difference]: Finished difference Result 256377 states and 276004 transitions. [2024-11-28 03:58:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 677 [2024-11-28 03:58:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:15,762 INFO L225 Difference]: With dead ends: 256377 [2024-11-28 03:58:15,762 INFO L226 Difference]: Without dead ends: 134144 [2024-11-28 03:58:16,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:16,402 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 389 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:16,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 308 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:58:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134144 states. [2024-11-28 03:58:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134144 to 120960. [2024-11-28 03:58:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120960 states, 120959 states have (on average 1.0757033374945228) internal successors, (130116), 120959 states have internal predecessors, (130116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120960 states to 120960 states and 130116 transitions. [2024-11-28 03:58:18,031 INFO L78 Accepts]: Start accepts. Automaton has 120960 states and 130116 transitions. Word has length 677 [2024-11-28 03:58:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:18,032 INFO L471 AbstractCegarLoop]: Abstraction has 120960 states and 130116 transitions. [2024-11-28 03:58:18,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 120960 states and 130116 transitions. [2024-11-28 03:58:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2024-11-28 03:58:18,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:18,048 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:18,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:58:18,048 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:18,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 318002701, now seen corresponding path program 1 times [2024-11-28 03:58:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:18,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421672684] [2024-11-28 03:58:18,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 03:58:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:19,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421672684] [2024-11-28 03:58:19,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421672684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:19,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:19,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:58:19,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213543479] [2024-11-28 03:58:19,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:19,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:19,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:19,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:19,047 INFO L87 Difference]: Start difference. First operand 120960 states and 130116 transitions. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:58:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:22,002 INFO L93 Difference]: Finished difference Result 253415 states and 272571 transitions. [2024-11-28 03:58:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 696 [2024-11-28 03:58:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:22,132 INFO L225 Difference]: With dead ends: 253415 [2024-11-28 03:58:22,132 INFO L226 Difference]: Without dead ends: 132457 [2024-11-28 03:58:22,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:22,188 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 264 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:22,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 269 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 03:58:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132457 states.