./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label52.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_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/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_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/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_0e2b118e-9c87-4c86-b425-4089d2048c51/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 ddbc486d8837447489a9f02b29f9b0c86837a784a73349e3a6819c320282b326 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:41:58,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:41:58,323 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:41:58,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:41:58,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:41:58,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:41:58,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:41:58,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:41:58,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:41:58,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:41:58,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:41:58,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:41:58,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:41:58,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:41:58,382 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:41:58,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:41:58,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:41:58,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:41:58,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:41:58,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:41:58,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:41:58,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:41:58,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:41:58,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:41:58,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:41:58,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:41:58,387 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:41:58,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:41:58,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:41:58,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:41:58,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:41:58,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:41:58,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:41:58,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:41:58,388 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_0e2b118e-9c87-4c86-b425-4089d2048c51/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 -> ddbc486d8837447489a9f02b29f9b0c86837a784a73349e3a6819c320282b326 [2024-11-28 02:41:58,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:41:58,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:41:58,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:41:58,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:41:58,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:41:58,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem12_label52.c [2024-11-28 02:42:01,853 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/data/b9f0b4099/7d7e2db9753c4595b11e095d6feaf4a4/FLAG5858c74cf [2024-11-28 02:42:02,683 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:42:02,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/sv-benchmarks/c/eca-rers2012/Problem12_label52.c [2024-11-28 02:42:02,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/data/b9f0b4099/7d7e2db9753c4595b11e095d6feaf4a4/FLAG5858c74cf [2024-11-28 02:42:02,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/data/b9f0b4099/7d7e2db9753c4595b11e095d6feaf4a4 [2024-11-28 02:42:02,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:42:02,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:42:02,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:02,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:42:02,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:42:02,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:02" (1/1) ... [2024-11-28 02:42:02,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42261e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:02, skipping insertion in model container [2024-11-28 02:42:02,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:02" (1/1) ... [2024-11-28 02:42:02,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:42:03,192 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_0e2b118e-9c87-4c86-b425-4089d2048c51/sv-benchmarks/c/eca-rers2012/Problem12_label52.c[3994,4007] [2024-11-28 02:42:04,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:04,118 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:42:04,198 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_0e2b118e-9c87-4c86-b425-4089d2048c51/sv-benchmarks/c/eca-rers2012/Problem12_label52.c[3994,4007] [2024-11-28 02:42:04,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:04,758 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:42:04,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04 WrapperNode [2024-11-28 02:42:04,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:04,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:04,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:42:04,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:42:04,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:04,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,234 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-28 02:42:05,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:05,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:42:05,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:42:05,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:42:05,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,487 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:42:05,487 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:42:05,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:42:05,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:42:05,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:42:05,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (1/1) ... [2024-11-28 02:42:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:05,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:05,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:42:05,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:42:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:42:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:42:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:42:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:42:06,076 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:42:06,078 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:42:11,779 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-28 02:42:11,779 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:42:11,818 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:42:11,818 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:42:11,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:11 BoogieIcfgContainer [2024-11-28 02:42:11,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:42:11,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:42:11,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:42:11,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:42:11,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:02" (1/3) ... [2024-11-28 02:42:11,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f5f83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:11, skipping insertion in model container [2024-11-28 02:42:11,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:04" (2/3) ... [2024-11-28 02:42:11,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f5f83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:11, skipping insertion in model container [2024-11-28 02:42:11,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:11" (3/3) ... [2024-11-28 02:42:11,838 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2024-11-28 02:42:11,854 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:42:11,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label52.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:42:11,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:11,971 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;@595bade8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:11,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:42:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 02:42:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:42:11,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:11,988 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:11,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:11,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2024-11-28 02:42:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875333161] [2024-11-28 02:42:12,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:12,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:12,377 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 02:42:12,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:12,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875333161] [2024-11-28 02:42:12,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875333161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:12,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:12,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:42:12,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225199296] [2024-11-28 02:42:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:12,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:12,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:12,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:12,413 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 02:42:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:17,410 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-28 02:42:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:17,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2024-11-28 02:42:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:17,432 INFO L225 Difference]: With dead ends: 2388 [2024-11-28 02:42:17,432 INFO L226 Difference]: Without dead ends: 1506 [2024-11-28 02:42:17,437 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 02:42:17,440 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 829 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:17,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 02:42:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-28 02:42:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-28 02:42:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 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 02:42:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2024-11-28 02:42:17,555 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 30 [2024-11-28 02:42:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:17,555 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2024-11-28 02:42:17,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 02:42:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2024-11-28 02:42:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:42:17,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:17,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-28 02:42:17,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:42:17,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:17,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1135945684, now seen corresponding path program 1 times [2024-11-28 02:42:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616390351] [2024-11-28 02:42:17,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:17,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616390351] [2024-11-28 02:42:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616390351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:17,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:17,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:42:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659013567] [2024-11-28 02:42:17,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:17,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:17,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:17,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:17,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:17,934 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 02:42:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:22,429 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2024-11-28 02:42:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2024-11-28 02:42:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:22,444 INFO L225 Difference]: With dead ends: 4514 [2024-11-28 02:42:22,444 INFO L226 Difference]: Without dead ends: 3010 [2024-11-28 02:42:22,448 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 02:42:22,450 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:22,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:42:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-28 02:42:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-28 02:42:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 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 02:42:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2024-11-28 02:42:22,550 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 103 [2024-11-28 02:42:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:22,551 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2024-11-28 02:42:22,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 02:42:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2024-11-28 02:42:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:42:22,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:22,558 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-28 02:42:22,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:42:22,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:22,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash -781178929, now seen corresponding path program 1 times [2024-11-28 02:42:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768014587] [2024-11-28 02:42:22,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:23,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:23,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768014587] [2024-11-28 02:42:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768014587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:23,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:23,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:42:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785457596] [2024-11-28 02:42:23,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:23,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:23,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:23,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:23,091 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 02:42:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:29,443 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2024-11-28 02:42:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:29,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2024-11-28 02:42:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:29,465 INFO L225 Difference]: With dead ends: 8267 [2024-11-28 02:42:29,465 INFO L226 Difference]: Without dead ends: 5261 [2024-11-28 02:42:29,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:42:29,470 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:29,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 02:42:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-28 02:42:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-28 02:42:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 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 02:42:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2024-11-28 02:42:29,589 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 116 [2024-11-28 02:42:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:29,591 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2024-11-28 02:42:29,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 02:42:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2024-11-28 02:42:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-28 02:42:29,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:29,598 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-28 02:42:29,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:42:29,598 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:29,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1024926294, now seen corresponding path program 1 times [2024-11-28 02:42:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:29,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421986804] [2024-11-28 02:42:29,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:29,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:42:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421986804] [2024-11-28 02:42:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421986804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565545042] [2024-11-28 02:42:30,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:30,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:30,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:30,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:30,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:42:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:30,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:42:30,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 02:42:30,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565545042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:30,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:42:30,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-28 02:42:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591256014] [2024-11-28 02:42:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:30,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:30,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:30,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:30,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:30,541 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 02:42:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:34,307 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2024-11-28 02:42:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:34,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 171 [2024-11-28 02:42:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:34,335 INFO L225 Difference]: With dead ends: 14275 [2024-11-28 02:42:34,335 INFO L226 Difference]: Without dead ends: 9767 [2024-11-28 02:42:34,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:34,342 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:34,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 02:42:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-28 02:42:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-28 02:42:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 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 02:42:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2024-11-28 02:42:34,532 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 171 [2024-11-28 02:42:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:34,533 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2024-11-28 02:42:34,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 02:42:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2024-11-28 02:42:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 02:42:34,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:34,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:34,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:42:34,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:34,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:34,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1427256702, now seen corresponding path program 1 times [2024-11-28 02:42:34,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:34,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643547042] [2024-11-28 02:42:34,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:34,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:35,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643547042] [2024-11-28 02:42:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643547042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:35,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:35,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:42:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343000012] [2024-11-28 02:42:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:35,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:35,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:35,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:35,185 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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 02:42:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:39,171 INFO L93 Difference]: Finished difference Result 23324 states and 32177 transitions. [2024-11-28 02:42:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:39,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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 187 [2024-11-28 02:42:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:39,208 INFO L225 Difference]: With dead ends: 23324 [2024-11-28 02:42:39,209 INFO L226 Difference]: Without dead ends: 14273 [2024-11-28 02:42:39,218 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 02:42:39,219 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:39,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:42:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2024-11-28 02:42:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273. [2024-11-28 02:42:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2779568385650224) internal successors, (18239), 14272 states have internal predecessors, (18239), 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 02:42:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18239 transitions. [2024-11-28 02:42:39,485 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18239 transitions. Word has length 187 [2024-11-28 02:42:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:39,485 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 18239 transitions. [2024-11-28 02:42:39,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 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 02:42:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18239 transitions. [2024-11-28 02:42:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-28 02:42:39,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:39,490 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:39,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:42:39,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:39,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1521151035, now seen corresponding path program 1 times [2024-11-28 02:42:39,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:39,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198841292] [2024-11-28 02:42:39,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 02:42:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198841292] [2024-11-28 02:42:39,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198841292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:39,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:39,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:42:39,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850131551] [2024-11-28 02:42:39,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:39,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:39,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:39,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:39,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:39,983 INFO L87 Difference]: Start difference. First operand 14273 states and 18239 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:42:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:43,903 INFO L93 Difference]: Finished difference Result 39058 states and 50794 transitions. [2024-11-28 02:42:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 261 [2024-11-28 02:42:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:43,967 INFO L225 Difference]: With dead ends: 39058 [2024-11-28 02:42:43,967 INFO L226 Difference]: Without dead ends: 25538 [2024-11-28 02:42:43,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:43,982 INFO L435 NwaCegarLoop]: 1283 mSDtfsCounter, 736 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:43,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1291 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:42:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-28 02:42:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2024-11-28 02:42:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.2637741316521127) internal successors, (32273), 25537 states have internal predecessors, (32273), 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 02:42:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 32273 transitions. [2024-11-28 02:42:44,464 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 32273 transitions. Word has length 261 [2024-11-28 02:42:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:44,465 INFO L471 AbstractCegarLoop]: Abstraction has 25538 states and 32273 transitions. [2024-11-28 02:42:44,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:42:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 32273 transitions. [2024-11-28 02:42:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-28 02:42:44,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:44,480 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:42:44,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:42:44,480 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:44,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2073803476, now seen corresponding path program 1 times [2024-11-28 02:42:44,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:44,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915725290] [2024-11-28 02:42:44,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:44,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-28 02:42:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:44,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915725290] [2024-11-28 02:42:44,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915725290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:44,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:44,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:42:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125248211] [2024-11-28 02:42:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:44,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:44,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:44,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:44,855 INFO L87 Difference]: Start difference. First operand 25538 states and 32273 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 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 02:42:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:48,587 INFO L93 Difference]: Finished difference Result 50323 states and 63788 transitions. [2024-11-28 02:42:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:48,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 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 319 [2024-11-28 02:42:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:48,652 INFO L225 Difference]: With dead ends: 50323 [2024-11-28 02:42:48,652 INFO L226 Difference]: Without dead ends: 25538 [2024-11-28 02:42:48,672 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 02:42:48,673 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:48,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 427 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:42:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-28 02:42:49,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 21783. [2024-11-28 02:42:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.1813883022679277) internal successors, (25733), 21782 states have internal predecessors, (25733), 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 02:42:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25733 transitions. [2024-11-28 02:42:49,074 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25733 transitions. Word has length 319 [2024-11-28 02:42:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:49,074 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 25733 transitions. [2024-11-28 02:42:49,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 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 02:42:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25733 transitions. [2024-11-28 02:42:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-28 02:42:49,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:49,086 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:49,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:42:49,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:49,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1626219887, now seen corresponding path program 1 times [2024-11-28 02:42:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131213998] [2024-11-28 02:42:49,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 230 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:42:49,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131213998] [2024-11-28 02:42:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131213998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:49,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070627260] [2024-11-28 02:42:49,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:49,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:49,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:49,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:49,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:42:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:50,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:42:50,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 02:42:50,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:50,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070627260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:50,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:42:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:42:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183046631] [2024-11-28 02:42:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:50,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:50,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:50,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:50,435 INFO L87 Difference]: Start difference. First operand 21783 states and 25733 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 02:42:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:54,523 INFO L93 Difference]: Finished difference Result 58584 states and 70114 transitions. [2024-11-28 02:42:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:54,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 409 [2024-11-28 02:42:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:54,589 INFO L225 Difference]: With dead ends: 58584 [2024-11-28 02:42:54,590 INFO L226 Difference]: Without dead ends: 37554 [2024-11-28 02:42:54,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:42:54,608 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 670 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:54,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 944 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:42:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2024-11-28 02:42:55,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 37554. [2024-11-28 02:42:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.1895454424413496) internal successors, (44671), 37553 states have internal predecessors, (44671), 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 02:42:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 44671 transitions. [2024-11-28 02:42:55,205 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 44671 transitions. Word has length 409 [2024-11-28 02:42:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:55,206 INFO L471 AbstractCegarLoop]: Abstraction has 37554 states and 44671 transitions. [2024-11-28 02:42:55,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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 02:42:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 44671 transitions. [2024-11-28 02:42:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-28 02:42:55,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:55,220 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-28 02:42:55,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:42:55,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:42:55,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:55,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1796315678, now seen corresponding path program 1 times [2024-11-28 02:42:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734736408] [2024-11-28 02:42:55,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:55,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:55,939 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 02:42:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734736408] [2024-11-28 02:42:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734736408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:55,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:55,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:42:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595754705] [2024-11-28 02:42:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:55,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:42:55,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:55,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:42:55,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:55,942 INFO L87 Difference]: Start difference. First operand 37554 states and 44671 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 02:42:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:59,220 INFO L93 Difference]: Finished difference Result 95383 states and 114715 transitions. [2024-11-28 02:42:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:42:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 410 [2024-11-28 02:42:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:59,313 INFO L225 Difference]: With dead ends: 95383 [2024-11-28 02:42:59,314 INFO L226 Difference]: Without dead ends: 58582 [2024-11-28 02:42:59,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:42:59,337 INFO L435 NwaCegarLoop]: 1219 mSDtfsCounter, 703 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:59,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1227 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:42:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58582 states. [2024-11-28 02:42:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58582 to 57080. [2024-11-28 02:42:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.1586397799540986) internal successors, (66134), 57079 states have internal predecessors, (66134), 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 02:43:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 66134 transitions. [2024-11-28 02:43:00,022 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 66134 transitions. Word has length 410 [2024-11-28 02:43:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:00,023 INFO L471 AbstractCegarLoop]: Abstraction has 57080 states and 66134 transitions. [2024-11-28 02:43:00,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 02:43:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 66134 transitions. [2024-11-28 02:43:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-28 02:43:00,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:00,030 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-28 02:43:00,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:43:00,031 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:00,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash 255303714, now seen corresponding path program 1 times [2024-11-28 02:43:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:00,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388956700] [2024-11-28 02:43:00,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:43:00,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388956700] [2024-11-28 02:43:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388956700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:00,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:43:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186170944] [2024-11-28 02:43:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:00,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:00,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:00,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:00,342 INFO L87 Difference]: Start difference. First operand 57080 states and 66134 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 02:43:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:04,482 INFO L93 Difference]: Finished difference Result 149455 states and 174891 transitions. [2024-11-28 02:43:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:43:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 416 [2024-11-28 02:43:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:04,611 INFO L225 Difference]: With dead ends: 149455 [2024-11-28 02:43:04,612 INFO L226 Difference]: Without dead ends: 93128 [2024-11-28 02:43:04,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:04,653 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:04,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 534 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:43:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2024-11-28 02:43:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 87120. [2024-11-28 02:43:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1410714080740136) internal successors, (99409), 87119 states have internal predecessors, (99409), 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 02:43:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 99409 transitions. [2024-11-28 02:43:06,113 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 99409 transitions. Word has length 416 [2024-11-28 02:43:06,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:06,114 INFO L471 AbstractCegarLoop]: Abstraction has 87120 states and 99409 transitions. [2024-11-28 02:43:06,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 02:43:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 99409 transitions. [2024-11-28 02:43:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-28 02:43:06,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:06,124 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:06,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:43:06,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:06,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2032302205, now seen corresponding path program 1 times [2024-11-28 02:43:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504884346] [2024-11-28 02:43:06,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-28 02:43:06,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504884346] [2024-11-28 02:43:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504884346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:06,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:43:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264997769] [2024-11-28 02:43:06,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:06,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:06,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:06,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:06,574 INFO L87 Difference]: Start difference. First operand 87120 states and 99409 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 02:43:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:11,136 INFO L93 Difference]: Finished difference Result 177242 states and 201913 transitions. [2024-11-28 02:43:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:43:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 418 [2024-11-28 02:43:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:11,232 INFO L225 Difference]: With dead ends: 177242 [2024-11-28 02:43:11,232 INFO L226 Difference]: Without dead ends: 90875 [2024-11-28 02:43:11,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:11,269 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:11,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1000 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 02:43:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90875 states. [2024-11-28 02:43:12,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90875 to 81863. [2024-11-28 02:43:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81863 states, 81862 states have (on average 1.108182062495419) internal successors, (90718), 81862 states have internal predecessors, (90718), 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 02:43:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81863 states to 81863 states and 90718 transitions. [2024-11-28 02:43:12,710 INFO L78 Accepts]: Start accepts. Automaton has 81863 states and 90718 transitions. Word has length 418 [2024-11-28 02:43:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:12,711 INFO L471 AbstractCegarLoop]: Abstraction has 81863 states and 90718 transitions. [2024-11-28 02:43:12,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 02:43:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 81863 states and 90718 transitions. [2024-11-28 02:43:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-28 02:43:12,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:12,718 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:43:12,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:43:12,718 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:12,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1489334894, now seen corresponding path program 1 times [2024-11-28 02:43:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994933876] [2024-11-28 02:43:12,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-28 02:43:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994933876] [2024-11-28 02:43:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994933876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:13,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:43:13,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483233334] [2024-11-28 02:43:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:13,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:13,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:13,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:13,031 INFO L87 Difference]: Start difference. First operand 81863 states and 90718 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 02:43:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:16,940 INFO L93 Difference]: Finished difference Result 181748 states and 201973 transitions. [2024-11-28 02:43:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:43:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 02:43:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:17,058 INFO L225 Difference]: With dead ends: 181748 [2024-11-28 02:43:17,058 INFO L226 Difference]: Without dead ends: 100638 [2024-11-28 02:43:17,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:17,100 INFO L435 NwaCegarLoop]: 1109 mSDtfsCounter, 844 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:17,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1117 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:43:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100638 states. [2024-11-28 02:43:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100638 to 96883. [2024-11-28 02:43:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96883 states, 96882 states have (on average 1.097758097479408) internal successors, (106353), 96882 states have internal predecessors, (106353), 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 02:43:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96883 states to 96883 states and 106353 transitions. [2024-11-28 02:43:18,610 INFO L78 Accepts]: Start accepts. Automaton has 96883 states and 106353 transitions. Word has length 442 [2024-11-28 02:43:18,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:18,611 INFO L471 AbstractCegarLoop]: Abstraction has 96883 states and 106353 transitions. [2024-11-28 02:43:18,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 02:43:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 96883 states and 106353 transitions. [2024-11-28 02:43:18,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-28 02:43:18,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:18,625 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:18,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:43:18,625 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:18,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 716484467, now seen corresponding path program 1 times [2024-11-28 02:43:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32640582] [2024-11-28 02:43:18,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-28 02:43:19,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:19,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32640582] [2024-11-28 02:43:19,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32640582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:19,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:19,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:43:19,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247928429] [2024-11-28 02:43:19,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:19,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:19,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:19,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:19,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:19,854 INFO L87 Difference]: Start difference. First operand 96883 states and 106353 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 02:43:23,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:23,364 INFO L93 Difference]: Finished difference Result 207282 states and 227112 transitions. [2024-11-28 02:43:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:43:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 480 [2024-11-28 02:43:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:23,457 INFO L225 Difference]: With dead ends: 207282 [2024-11-28 02:43:23,457 INFO L226 Difference]: Without dead ends: 111152 [2024-11-28 02:43:23,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:23,487 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 733 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:23,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 937 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:43:23,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111152 states. [2024-11-28 02:43:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111152 to 102140. [2024-11-28 02:43:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.0943028617863892) internal successors, (111771), 102139 states have internal predecessors, (111771), 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 02:43:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 111771 transitions. [2024-11-28 02:43:24,846 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 111771 transitions. Word has length 480 [2024-11-28 02:43:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:24,847 INFO L471 AbstractCegarLoop]: Abstraction has 102140 states and 111771 transitions. [2024-11-28 02:43:24,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 02:43:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 111771 transitions. [2024-11-28 02:43:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-28 02:43:24,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:24,860 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:24,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:43:24,861 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:24,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 942813669, now seen corresponding path program 1 times [2024-11-28 02:43:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:24,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046113755] [2024-11-28 02:43:24,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:24,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-28 02:43:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:25,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046113755] [2024-11-28 02:43:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046113755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:25,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:25,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:43:25,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593292080] [2024-11-28 02:43:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:25,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:25,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:25,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:25,750 INFO L87 Difference]: Start difference. First operand 102140 states and 111771 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 02:43:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:29,476 INFO L93 Difference]: Finished difference Result 232816 states and 255659 transitions. [2024-11-28 02:43:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:43:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 567 [2024-11-28 02:43:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:29,591 INFO L225 Difference]: With dead ends: 232816 [2024-11-28 02:43:29,591 INFO L226 Difference]: Without dead ends: 131429 [2024-11-28 02:43:29,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:43:29,620 INFO L435 NwaCegarLoop]: 1223 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:29,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1231 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:43:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131429 states. [2024-11-28 02:43:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131429 to 127674. [2024-11-28 02:43:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127674 states, 127673 states have (on average 1.0866353888449398) internal successors, (138734), 127673 states have internal predecessors, (138734), 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 02:43:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127674 states to 127674 states and 138734 transitions. [2024-11-28 02:43:31,150 INFO L78 Accepts]: Start accepts. Automaton has 127674 states and 138734 transitions. Word has length 567 [2024-11-28 02:43:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:31,150 INFO L471 AbstractCegarLoop]: Abstraction has 127674 states and 138734 transitions. [2024-11-28 02:43:31,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 02:43:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 127674 states and 138734 transitions. [2024-11-28 02:43:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2024-11-28 02:43:31,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:31,201 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:31,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:43:31,201 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:31,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1474355894, now seen corresponding path program 1 times [2024-11-28 02:43:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810981670] [2024-11-28 02:43:31,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-28 02:43:33,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810981670] [2024-11-28 02:43:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810981670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:33,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:43:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717581133] [2024-11-28 02:43:33,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:33,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:43:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:33,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:43:33,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:43:33,572 INFO L87 Difference]: Start difference. First operand 127674 states and 138734 transitions. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 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 02:43:45,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:45,514 INFO L93 Difference]: Finished difference Result 343409 states and 372520 transitions. [2024-11-28 02:43:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:43:45,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 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 1035 [2024-11-28 02:43:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:45,740 INFO L225 Difference]: With dead ends: 343409 [2024-11-28 02:43:45,740 INFO L226 Difference]: Without dead ends: 214980 [2024-11-28 02:43:45,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:43:45,794 INFO L435 NwaCegarLoop]: 607 mSDtfsCounter, 1946 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 8407 mSolverCounterSat, 2909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 11316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2909 IncrementalHoareTripleChecker+Valid, 8407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:45,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 652 Invalid, 11316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2909 Valid, 8407 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2024-11-28 02:43:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214980 states. [2024-11-28 02:43:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214980 to 129176. [2024-11-28 02:43:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129176 states, 129175 states have (on average 1.0849390361912135) internal successors, (140147), 129175 states have internal predecessors, (140147), 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 02:43:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129176 states to 129176 states and 140147 transitions. [2024-11-28 02:43:48,144 INFO L78 Accepts]: Start accepts. Automaton has 129176 states and 140147 transitions. Word has length 1035 [2024-11-28 02:43:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:48,145 INFO L471 AbstractCegarLoop]: Abstraction has 129176 states and 140147 transitions. [2024-11-28 02:43:48,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 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 02:43:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 129176 states and 140147 transitions. [2024-11-28 02:43:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2024-11-28 02:43:48,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:48,220 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:48,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:43:48,221 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:48,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 384456558, now seen corresponding path program 1 times [2024-11-28 02:43:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889641712] [2024-11-28 02:43:48,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:48,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 453 proven. 125 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-28 02:43:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889641712] [2024-11-28 02:43:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889641712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:43:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545695943] [2024-11-28 02:43:53,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:53,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:53,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:53,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:43:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:54,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:43:54,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 509 proven. 69 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-28 02:43:56,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:43:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-28 02:43:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545695943] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:43:57,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:43:57,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 11 [2024-11-28 02:43:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628981592] [2024-11-28 02:43:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:57,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:43:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:57,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:43:57,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:43:57,563 INFO L87 Difference]: Start difference. First operand 129176 states and 140147 transitions. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 02:44:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:02,242 INFO L93 Difference]: Finished difference Result 285386 states and 310501 transitions. [2024-11-28 02:44:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 1043 [2024-11-28 02:44:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:02,403 INFO L225 Difference]: With dead ends: 285386 [2024-11-28 02:44:02,403 INFO L226 Difference]: Without dead ends: 156963 [2024-11-28 02:44:02,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2092 GetRequests, 2083 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:44:02,470 INFO L435 NwaCegarLoop]: 1287 mSDtfsCounter, 87 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:02,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1295 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:44:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156963 states. [2024-11-28 02:44:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156963 to 144947. [2024-11-28 02:44:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144947 states, 144946 states have (on average 1.0791191202240835) internal successors, (156414), 144946 states have internal predecessors, (156414), 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 02:44:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144947 states to 144947 states and 156414 transitions. [2024-11-28 02:44:04,824 INFO L78 Accepts]: Start accepts. Automaton has 144947 states and 156414 transitions. Word has length 1043 [2024-11-28 02:44:04,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:04,825 INFO L471 AbstractCegarLoop]: Abstraction has 144947 states and 156414 transitions. [2024-11-28 02:44:04,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 02:44:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 144947 states and 156414 transitions. [2024-11-28 02:44:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2024-11-28 02:44:04,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:04,887 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:04,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:44:05,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2b118e-9c87-4c86-b425-4089d2048c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:44:05,091 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:05,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1748965017, now seen corresponding path program 1 times [2024-11-28 02:44:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272987843] [2024-11-28 02:44:05,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2024-11-28 02:44:06,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272987843] [2024-11-28 02:44:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272987843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236108910] [2024-11-28 02:44:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:06,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:06,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:06,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:06,178 INFO L87 Difference]: Start difference. First operand 144947 states and 156414 transitions. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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 02:44:09,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:09,964 INFO L93 Difference]: Finished difference Result 292145 states and 315095 transitions. [2024-11-28 02:44:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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 1114 [2024-11-28 02:44:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:10,104 INFO L225 Difference]: With dead ends: 292145 [2024-11-28 02:44:10,104 INFO L226 Difference]: Without dead ends: 144947 [2024-11-28 02:44:10,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:10,158 INFO L435 NwaCegarLoop]: 1221 mSDtfsCounter, 232 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:10,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1228 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:44:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144947 states. [2024-11-28 02:44:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144947 to 130678. [2024-11-28 02:44:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130678 states, 130677 states have (on average 1.0615257466883996) internal successors, (138717), 130677 states have internal predecessors, (138717), 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 02:44:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130678 states to 130678 states and 138717 transitions. [2024-11-28 02:44:12,045 INFO L78 Accepts]: Start accepts. Automaton has 130678 states and 138717 transitions. Word has length 1114 [2024-11-28 02:44:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:12,046 INFO L471 AbstractCegarLoop]: Abstraction has 130678 states and 138717 transitions. [2024-11-28 02:44:12,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 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 02:44:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 130678 states and 138717 transitions. [2024-11-28 02:44:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2024-11-28 02:44:12,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:12,112 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:12,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:44:12,113 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:12,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash 375410618, now seen corresponding path program 1 times [2024-11-28 02:44:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:12,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100962564] [2024-11-28 02:44:12,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-28 02:44:13,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100962564] [2024-11-28 02:44:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100962564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:13,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948995234] [2024-11-28 02:44:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:13,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:13,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:13,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:13,707 INFO L87 Difference]: Start difference. First operand 130678 states and 138717 transitions. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 02:44:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:18,530 INFO L93 Difference]: Finished difference Result 287639 states and 304763 transitions. [2024-11-28 02:44:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 1203 [2024-11-28 02:44:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:18,688 INFO L225 Difference]: With dead ends: 287639 [2024-11-28 02:44:18,688 INFO L226 Difference]: Without dead ends: 157714 [2024-11-28 02:44:19,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:19,081 INFO L435 NwaCegarLoop]: 1142 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:19,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1149 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:44:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157714 states. [2024-11-28 02:44:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157714 to 144947. [2024-11-28 02:44:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144947 states, 144946 states have (on average 1.0559242752473335) internal successors, (153052), 144946 states have internal predecessors, (153052), 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 02:44:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144947 states to 144947 states and 153052 transitions. [2024-11-28 02:44:21,227 INFO L78 Accepts]: Start accepts. Automaton has 144947 states and 153052 transitions. Word has length 1203 [2024-11-28 02:44:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:21,229 INFO L471 AbstractCegarLoop]: Abstraction has 144947 states and 153052 transitions. [2024-11-28 02:44:21,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 02:44:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 144947 states and 153052 transitions. [2024-11-28 02:44:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2024-11-28 02:44:21,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:21,297 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:21,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:44:21,297 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:21,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -212593211, now seen corresponding path program 1 times [2024-11-28 02:44:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260596464] [2024-11-28 02:44:21,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1399 backedges. 1081 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-28 02:44:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260596464] [2024-11-28 02:44:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260596464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:22,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:22,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98555159] [2024-11-28 02:44:22,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:22,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:22,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:22,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:22,351 INFO L87 Difference]: Start difference. First operand 144947 states and 153052 transitions. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 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 02:44:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:27,104 INFO L93 Difference]: Finished difference Result 315426 states and 334112 transitions. [2024-11-28 02:44:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 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 1240 [2024-11-28 02:44:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:27,256 INFO L225 Difference]: With dead ends: 315426 [2024-11-28 02:44:27,256 INFO L226 Difference]: Without dead ends: 171232 [2024-11-28 02:44:27,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:27,301 INFO L435 NwaCegarLoop]: 1273 mSDtfsCounter, 646 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:27,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1281 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:44:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171232 states. [2024-11-28 02:44:29,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171232 to 162220. [2024-11-28 02:44:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162220 states, 162219 states have (on average 1.0495811218168032) internal successors, (170262), 162219 states have internal predecessors, (170262), 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 02:44:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162220 states to 162220 states and 170262 transitions. [2024-11-28 02:44:29,507 INFO L78 Accepts]: Start accepts. Automaton has 162220 states and 170262 transitions. Word has length 1240 [2024-11-28 02:44:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:29,507 INFO L471 AbstractCegarLoop]: Abstraction has 162220 states and 170262 transitions. [2024-11-28 02:44:29,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 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 02:44:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 162220 states and 170262 transitions. [2024-11-28 02:44:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2024-11-28 02:44:29,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:29,567 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:29,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:44:29,567 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:29,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:29,568 INFO L85 PathProgramCache]: Analyzing trace with hash 503752007, now seen corresponding path program 1 times [2024-11-28 02:44:29,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:29,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557123186] [2024-11-28 02:44:29,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1451 backedges. 1114 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-28 02:44:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557123186] [2024-11-28 02:44:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557123186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:32,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:32,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:32,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638529378] [2024-11-28 02:44:32,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:32,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:32,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:32,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:32,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:32,818 INFO L87 Difference]: Start difference. First operand 162220 states and 170262 transitions. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 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 02:44:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:37,816 INFO L93 Difference]: Finished difference Result 341711 states and 358651 transitions. [2024-11-28 02:44:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 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 1255 [2024-11-28 02:44:37,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:38,101 INFO L225 Difference]: With dead ends: 341711 [2024-11-28 02:44:38,101 INFO L226 Difference]: Without dead ends: 179493 [2024-11-28 02:44:38,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:38,145 INFO L435 NwaCegarLoop]: 1318 mSDtfsCounter, 636 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:38,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1326 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 02:44:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179493 states. [2024-11-28 02:44:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179493 to 177240. [2024-11-28 02:44:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177240 states, 177239 states have (on average 1.0453906871512477) internal successors, (185284), 177239 states have internal predecessors, (185284), 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 02:44:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177240 states to 177240 states and 185284 transitions. [2024-11-28 02:44:40,604 INFO L78 Accepts]: Start accepts. Automaton has 177240 states and 185284 transitions. Word has length 1255 [2024-11-28 02:44:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:40,604 INFO L471 AbstractCegarLoop]: Abstraction has 177240 states and 185284 transitions. [2024-11-28 02:44:40,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 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 02:44:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 177240 states and 185284 transitions. [2024-11-28 02:44:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1285 [2024-11-28 02:44:40,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:40,671 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:40,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:44:40,671 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:40,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1660112624, now seen corresponding path program 1 times [2024-11-28 02:44:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:40,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792689089] [2024-11-28 02:44:40,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 805 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-28 02:44:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792689089] [2024-11-28 02:44:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792689089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52317773] [2024-11-28 02:44:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:42,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:42,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:42,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:42,115 INFO L87 Difference]: Start difference. First operand 177240 states and 185284 transitions. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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 02:44:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:44:47,995 INFO L93 Difference]: Finished difference Result 385269 states and 403375 transitions. [2024-11-28 02:44:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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 1284 [2024-11-28 02:44:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:44:48,344 INFO L225 Difference]: With dead ends: 385269 [2024-11-28 02:44:48,344 INFO L226 Difference]: Without dead ends: 208782 [2024-11-28 02:44:48,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:48,458 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 260 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:44:48,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 293 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2247 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:44:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208782 states. [2024-11-28 02:44:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208782 to 200521. [2024-11-28 02:44:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200521 states, 200520 states have (on average 1.0459754637941352) internal successors, (209739), 200520 states have internal predecessors, (209739), 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 02:44:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200521 states to 200521 states and 209739 transitions. [2024-11-28 02:44:51,357 INFO L78 Accepts]: Start accepts. Automaton has 200521 states and 209739 transitions. Word has length 1284 [2024-11-28 02:44:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:44:51,358 INFO L471 AbstractCegarLoop]: Abstraction has 200521 states and 209739 transitions. [2024-11-28 02:44:51,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 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 02:44:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 200521 states and 209739 transitions. [2024-11-28 02:44:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2024-11-28 02:44:52,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:44:52,026 INFO L218 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:52,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:44:52,026 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:44:52,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1874227526, now seen corresponding path program 1 times [2024-11-28 02:44:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420940450] [2024-11-28 02:44:52,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:52,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2024-11-28 02:44:54,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420940450] [2024-11-28 02:44:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420940450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:54,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:54,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047585576] [2024-11-28 02:44:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:54,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:54,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:54,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:54,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:54,750 INFO L87 Difference]: Start difference. First operand 200521 states and 209739 transitions. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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)