./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/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 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:28,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:28,710 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:28,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:28,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:28,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:28,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:28,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:28,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:28,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:28,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:28,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:28,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:28,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:28,767 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:28,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:28,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:28,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:28,769 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:28,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:28,772 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:28,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:28,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:28,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:28,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:28,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:28,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:28,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:28,775 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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/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 -> 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 [2024-11-27 19:50:29,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:29,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:29,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:29,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:29,109 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:29,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-27 19:50:32,183 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/data/6f54730d3/f1237612335a4b24a9d1cf304024fe95/FLAGb0d830dfb [2024-11-27 19:50:32,486 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:32,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-27 19:50:32,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/data/6f54730d3/f1237612335a4b24a9d1cf304024fe95/FLAGb0d830dfb [2024-11-27 19:50:32,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/data/6f54730d3/f1237612335a4b24a9d1cf304024fe95 [2024-11-27 19:50:32,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:32,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:32,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:32,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:32,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:32,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:32" (1/1) ... [2024-11-27 19:50:32,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f66ea31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:32, skipping insertion in model container [2024-11-27 19:50:32,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:32" (1/1) ... [2024-11-27 19:50:32,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:32,930 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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-27 19:50:33,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:33,039 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:33,100 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_bc9623f6-163e-4a0d-b01d-c0793fe28c24/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-27 19:50:33,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:33,143 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:33,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33 WrapperNode [2024-11-27 19:50:33,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:33,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:33,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:33,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:33,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,259 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-27 19:50:33,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:33,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:33,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:33,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:33,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,313 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:50:33,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:33,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:33,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:33,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:33,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (1/1) ... [2024-11-27 19:50:33,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:33,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:33,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc9623f6-163e-4a0d-b01d-c0793fe28c24/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:33,635 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:33,637 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:34,827 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:34,828 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:34,852 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:34,856 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:50:34,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:34 BoogieIcfgContainer [2024-11-27 19:50:34,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:34,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:34,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:34,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:34,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:32" (1/3) ... [2024-11-27 19:50:34,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6759a22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:34, skipping insertion in model container [2024-11-27 19:50:34,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:33" (2/3) ... [2024-11-27 19:50:34,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6759a22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:34, skipping insertion in model container [2024-11-27 19:50:34,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:34" (3/3) ... [2024-11-27 19:50:34,873 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-27 19:50:34,892 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:34,895 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 19:50:34,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:35,012 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;@73124bdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:35,012 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2024-11-27 19:50:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 19:50:35,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:35,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:35,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:35,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2024-11-27 19:50:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381894898] [2024-11-27 19:50:35,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:35,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381894898] [2024-11-27 19:50:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381894898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:35,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:35,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509347214] [2024-11-27 19:50:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:35,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:35,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:35,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:35,898 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 19:50:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:36,089 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2024-11-27 19:50:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:36,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-11-27 19:50:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:36,106 INFO L225 Difference]: With dead ends: 323 [2024-11-27 19:50:36,106 INFO L226 Difference]: Without dead ends: 225 [2024-11-27 19:50:36,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:36,114 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:36,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 452 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-27 19:50:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2024-11-27 19:50:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 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) [2024-11-27 19:50:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2024-11-27 19:50:36,180 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2024-11-27 19:50:36,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:36,181 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2024-11-27 19:50:36,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-27 19:50:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2024-11-27 19:50:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:50:36,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:36,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:36,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:36,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:36,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2024-11-27 19:50:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888321216] [2024-11-27 19:50:36,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888321216] [2024-11-27 19:50:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888321216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328985956] [2024-11-27 19:50:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:36,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:36,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:36,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:36,545 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-27 19:50:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:36,628 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2024-11-27 19:50:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:36,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-27 19:50:36,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:36,635 INFO L225 Difference]: With dead ends: 539 [2024-11-27 19:50:36,635 INFO L226 Difference]: Without dead ends: 373 [2024-11-27 19:50:36,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:36,637 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:36,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-27 19:50:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2024-11-27 19:50:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6) internal successors, (592), 370 states have internal predecessors, (592), 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) [2024-11-27 19:50:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 592 transitions. [2024-11-27 19:50:36,682 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 592 transitions. Word has length 64 [2024-11-27 19:50:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:36,682 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 592 transitions. [2024-11-27 19:50:36,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-27 19:50:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 592 transitions. [2024-11-27 19:50:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 19:50:36,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:36,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:36,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:36,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:36,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:36,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2024-11-27 19:50:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:36,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312990169] [2024-11-27 19:50:36,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:36,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:36,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312990169] [2024-11-27 19:50:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312990169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784755300] [2024-11-27 19:50:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:36,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:36,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:36,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:36,951 INFO L87 Difference]: Start difference. First operand 371 states and 592 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-27 19:50:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:37,008 INFO L93 Difference]: Finished difference Result 967 states and 1570 transitions. [2024-11-27 19:50:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:37,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-27 19:50:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:37,014 INFO L225 Difference]: With dead ends: 967 [2024-11-27 19:50:37,015 INFO L226 Difference]: Without dead ends: 653 [2024-11-27 19:50:37,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:37,021 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:37,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-27 19:50:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2024-11-27 19:50:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.6123076923076922) internal successors, (1048), 650 states have internal predecessors, (1048), 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) [2024-11-27 19:50:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2024-11-27 19:50:37,071 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 66 [2024-11-27 19:50:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:37,072 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2024-11-27 19:50:37,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-27 19:50:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2024-11-27 19:50:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 19:50:37,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:37,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:37,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:37,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:37,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2024-11-27 19:50:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:37,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974403631] [2024-11-27 19:50:37,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974403631] [2024-11-27 19:50:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974403631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:37,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253919962] [2024-11-27 19:50:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:37,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:37,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:37,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:37,394 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-27 19:50:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:37,741 INFO L93 Difference]: Finished difference Result 2807 states and 4618 transitions. [2024-11-27 19:50:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:50:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-27 19:50:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:37,756 INFO L225 Difference]: With dead ends: 2807 [2024-11-27 19:50:37,756 INFO L226 Difference]: Without dead ends: 2213 [2024-11-27 19:50:37,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:50:37,759 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:37,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1617 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-11-27 19:50:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1170. [2024-11-27 19:50:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.6236099230111207) internal successors, (1898), 1169 states have internal predecessors, (1898), 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) [2024-11-27 19:50:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1898 transitions. [2024-11-27 19:50:37,834 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1898 transitions. Word has length 68 [2024-11-27 19:50:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:37,835 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1898 transitions. [2024-11-27 19:50:37,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-27 19:50:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1898 transitions. [2024-11-27 19:50:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 19:50:37,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:37,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:37,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:37,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:37,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2024-11-27 19:50:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723790188] [2024-11-27 19:50:37,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723790188] [2024-11-27 19:50:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723790188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529292195] [2024-11-27 19:50:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:38,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:38,104 INFO L87 Difference]: Start difference. First operand 1170 states and 1898 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-27 19:50:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:38,247 INFO L93 Difference]: Finished difference Result 3409 states and 5599 transitions. [2024-11-27 19:50:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:38,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2024-11-27 19:50:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:38,258 INFO L225 Difference]: With dead ends: 3409 [2024-11-27 19:50:38,259 INFO L226 Difference]: Without dead ends: 2296 [2024-11-27 19:50:38,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:38,262 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 430 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:38,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 662 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-11-27 19:50:38,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1724. [2024-11-27 19:50:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.6297156123041208) internal successors, (2808), 1723 states have internal predecessors, (2808), 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) [2024-11-27 19:50:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2808 transitions. [2024-11-27 19:50:38,332 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2808 transitions. Word has length 69 [2024-11-27 19:50:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,333 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2808 transitions. [2024-11-27 19:50:38,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-27 19:50:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2808 transitions. [2024-11-27 19:50:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:38,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:38,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:50:38,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash -613931840, now seen corresponding path program 1 times [2024-11-27 19:50:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247281688] [2024-11-27 19:50:38,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247281688] [2024-11-27 19:50:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247281688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204492794] [2024-11-27 19:50:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:38,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,497 INFO L87 Difference]: Start difference. First operand 1724 states and 2808 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:38,559 INFO L93 Difference]: Finished difference Result 3779 states and 6218 transitions. [2024-11-27 19:50:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-27 19:50:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:38,571 INFO L225 Difference]: With dead ends: 3779 [2024-11-27 19:50:38,571 INFO L226 Difference]: Without dead ends: 2591 [2024-11-27 19:50:38,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,577 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:38,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 512 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-11-27 19:50:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2024-11-27 19:50:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2588 states have (on average 1.6333075734157652) internal successors, (4227), 2588 states have internal predecessors, (4227), 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) [2024-11-27 19:50:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4227 transitions. [2024-11-27 19:50:38,654 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4227 transitions. Word has length 70 [2024-11-27 19:50:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,654 INFO L471 AbstractCegarLoop]: Abstraction has 2589 states and 4227 transitions. [2024-11-27 19:50:38,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4227 transitions. [2024-11-27 19:50:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:38,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:38,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:50:38,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2024-11-27 19:50:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154769988] [2024-11-27 19:50:38,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:38,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154769988] [2024-11-27 19:50:38,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154769988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:38,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:38,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:38,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946943990] [2024-11-27 19:50:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:38,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:38,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:38,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,775 INFO L87 Difference]: Start difference. First operand 2589 states and 4227 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:38,860 INFO L93 Difference]: Finished difference Result 5033 states and 8246 transitions. [2024-11-27 19:50:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-27 19:50:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:38,875 INFO L225 Difference]: With dead ends: 5033 [2024-11-27 19:50:38,875 INFO L226 Difference]: Without dead ends: 3599 [2024-11-27 19:50:38,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:38,879 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:38,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2024-11-27 19:50:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2024-11-27 19:50:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 1.628754171301446) internal successors, (5857), 3596 states have internal predecessors, (5857), 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) [2024-11-27 19:50:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5857 transitions. [2024-11-27 19:50:38,982 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5857 transitions. Word has length 70 [2024-11-27 19:50:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:38,983 INFO L471 AbstractCegarLoop]: Abstraction has 3597 states and 5857 transitions. [2024-11-27 19:50:38,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5857 transitions. [2024-11-27 19:50:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:38,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:38,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:38,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:50:38,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:38,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2024-11-27 19:50:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:38,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155637195] [2024-11-27 19:50:38,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:38,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:39,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:39,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155637195] [2024-11-27 19:50:39,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155637195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:39,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:39,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:39,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023470134] [2024-11-27 19:50:39,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:39,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:39,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:39,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:39,196 INFO L87 Difference]: Start difference. First operand 3597 states and 5857 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-27 19:50:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:39,395 INFO L93 Difference]: Finished difference Result 11303 states and 18475 transitions. [2024-11-27 19:50:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2024-11-27 19:50:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:39,427 INFO L225 Difference]: With dead ends: 11303 [2024-11-27 19:50:39,427 INFO L226 Difference]: Without dead ends: 7781 [2024-11-27 19:50:39,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:39,433 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:39,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 747 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-11-27 19:50:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 5670. [2024-11-27 19:50:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 1.6232139707179396) internal successors, (9202), 5669 states have internal predecessors, (9202), 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) [2024-11-27 19:50:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 9202 transitions. [2024-11-27 19:50:39,640 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 9202 transitions. Word has length 70 [2024-11-27 19:50:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:39,640 INFO L471 AbstractCegarLoop]: Abstraction has 5670 states and 9202 transitions. [2024-11-27 19:50:39,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-27 19:50:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 9202 transitions. [2024-11-27 19:50:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:39,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:39,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:39,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:50:39,642 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:39,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2024-11-27 19:50:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073467822] [2024-11-27 19:50:39,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:39,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073467822] [2024-11-27 19:50:39,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073467822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:39,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:39,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:39,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449319754] [2024-11-27 19:50:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:39,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:39,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:39,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:39,815 INFO L87 Difference]: Start difference. First operand 5670 states and 9202 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:39,910 INFO L93 Difference]: Finished difference Result 11090 states and 18039 transitions. [2024-11-27 19:50:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2024-11-27 19:50:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:39,949 INFO L225 Difference]: With dead ends: 11090 [2024-11-27 19:50:39,949 INFO L226 Difference]: Without dead ends: 7838 [2024-11-27 19:50:39,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:39,956 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:39,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2024-11-27 19:50:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2024-11-27 19:50:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.61531589023612) internal successors, (12656), 7835 states have internal predecessors, (12656), 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) [2024-11-27 19:50:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12656 transitions. [2024-11-27 19:50:40,260 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12656 transitions. Word has length 70 [2024-11-27 19:50:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:40,261 INFO L471 AbstractCegarLoop]: Abstraction has 7836 states and 12656 transitions. [2024-11-27 19:50:40,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-27 19:50:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12656 transitions. [2024-11-27 19:50:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 19:50:40,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:40,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:40,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:50:40,264 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:40,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2024-11-27 19:50:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155472583] [2024-11-27 19:50:40,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:40,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155472583] [2024-11-27 19:50:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155472583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008756368] [2024-11-27 19:50:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:40,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:40,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:40,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:40,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:40,441 INFO L87 Difference]: Start difference. First operand 7836 states and 12656 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-27 19:50:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:40,702 INFO L93 Difference]: Finished difference Result 24465 states and 39613 transitions. [2024-11-27 19:50:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 71 [2024-11-27 19:50:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:40,774 INFO L225 Difference]: With dead ends: 24465 [2024-11-27 19:50:40,774 INFO L226 Difference]: Without dead ends: 16720 [2024-11-27 19:50:40,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:40,785 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:40,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 749 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16720 states. [2024-11-27 19:50:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16720 to 12235. [2024-11-27 19:50:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.607242112146477) internal successors, (19663), 12234 states have internal predecessors, (19663), 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) [2024-11-27 19:50:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19663 transitions. [2024-11-27 19:50:41,214 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19663 transitions. Word has length 71 [2024-11-27 19:50:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:41,215 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19663 transitions. [2024-11-27 19:50:41,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-27 19:50:41,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19663 transitions. [2024-11-27 19:50:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 19:50:41,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:41,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:41,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:50:41,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:41,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2024-11-27 19:50:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:41,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754750815] [2024-11-27 19:50:41,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:41,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:41,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754750815] [2024-11-27 19:50:41,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754750815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:41,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:41,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:41,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187157122] [2024-11-27 19:50:41,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:41,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:41,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:41,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:41,668 INFO L87 Difference]: Start difference. First operand 12235 states and 19663 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-27 19:50:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:41,951 INFO L93 Difference]: Finished difference Result 24381 states and 39202 transitions. [2024-11-27 19:50:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:41,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2024-11-27 19:50:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:41,989 INFO L225 Difference]: With dead ends: 24381 [2024-11-27 19:50:41,990 INFO L226 Difference]: Without dead ends: 12237 [2024-11-27 19:50:42,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:42,085 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:42,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 800 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12237 states. [2024-11-27 19:50:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12237 to 12235. [2024-11-27 19:50:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.5970246853032533) internal successors, (19538), 12234 states have internal predecessors, (19538), 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) [2024-11-27 19:50:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19538 transitions. [2024-11-27 19:50:42,333 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19538 transitions. Word has length 73 [2024-11-27 19:50:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:42,334 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19538 transitions. [2024-11-27 19:50:42,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-27 19:50:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19538 transitions. [2024-11-27 19:50:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:50:42,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:42,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:42,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 19:50:42,337 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:42,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash -833180180, now seen corresponding path program 1 times [2024-11-27 19:50:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286723094] [2024-11-27 19:50:42,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:42,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:42,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286723094] [2024-11-27 19:50:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286723094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:42,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:42,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582024808] [2024-11-27 19:50:42,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:42,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:42,747 INFO L87 Difference]: Start difference. First operand 12235 states and 19538 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-27 19:50:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:42,973 INFO L93 Difference]: Finished difference Result 35013 states and 56062 transitions. [2024-11-27 19:50:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2024-11-27 19:50:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:43,033 INFO L225 Difference]: With dead ends: 35013 [2024-11-27 19:50:43,033 INFO L226 Difference]: Without dead ends: 22869 [2024-11-27 19:50:43,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:43,049 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 352 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:43,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 613 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2024-11-27 19:50:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 22867. [2024-11-27 19:50:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22866 states have (on average 1.585716784745911) internal successors, (36259), 22866 states have internal predecessors, (36259), 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) [2024-11-27 19:50:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 36259 transitions. [2024-11-27 19:50:43,532 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 36259 transitions. Word has length 76 [2024-11-27 19:50:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:43,532 INFO L471 AbstractCegarLoop]: Abstraction has 22867 states and 36259 transitions. [2024-11-27 19:50:43,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-27 19:50:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 36259 transitions. [2024-11-27 19:50:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 19:50:43,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:43,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:43,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:50:43,534 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:43,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -60691096, now seen corresponding path program 1 times [2024-11-27 19:50:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601266110] [2024-11-27 19:50:43,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:44,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:44,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601266110] [2024-11-27 19:50:44,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601266110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:44,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:44,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984365187] [2024-11-27 19:50:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:44,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:44,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:44,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:44,218 INFO L87 Difference]: Start difference. First operand 22867 states and 36259 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-27 19:50:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:44,385 INFO L93 Difference]: Finished difference Result 23593 states and 37346 transitions. [2024-11-27 19:50:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:44,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-11-27 19:50:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:44,459 INFO L225 Difference]: With dead ends: 23593 [2024-11-27 19:50:44,460 INFO L226 Difference]: Without dead ends: 23591 [2024-11-27 19:50:44,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:44,469 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:44,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 867 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23591 states. [2024-11-27 19:50:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23591 to 23591. [2024-11-27 19:50:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23591 states, 23590 states have (on average 1.5673590504451038) internal successors, (36974), 23590 states have internal predecessors, (36974), 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) [2024-11-27 19:50:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23591 states to 23591 states and 36974 transitions. [2024-11-27 19:50:45,019 INFO L78 Accepts]: Start accepts. Automaton has 23591 states and 36974 transitions. Word has length 77 [2024-11-27 19:50:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:45,019 INFO L471 AbstractCegarLoop]: Abstraction has 23591 states and 36974 transitions. [2024-11-27 19:50:45,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-27 19:50:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 23591 states and 36974 transitions. [2024-11-27 19:50:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 19:50:45,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:45,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:45,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:50:45,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:45,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash -713806321, now seen corresponding path program 1 times [2024-11-27 19:50:45,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:45,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921377650] [2024-11-27 19:50:45,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921377650] [2024-11-27 19:50:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921377650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840052044] [2024-11-27 19:50:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:45,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:45,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:45,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:45,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:45,348 INFO L87 Difference]: Start difference. First operand 23591 states and 36974 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-27 19:50:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:45,588 INFO L93 Difference]: Finished difference Result 54506 states and 85848 transitions. [2024-11-27 19:50:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 101 [2024-11-27 19:50:45,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:45,690 INFO L225 Difference]: With dead ends: 54506 [2024-11-27 19:50:45,691 INFO L226 Difference]: Without dead ends: 43144 [2024-11-27 19:50:45,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:45,711 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:45,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 404 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:45,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2024-11-27 19:50:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43092. [2024-11-27 19:50:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43092 states, 43091 states have (on average 1.5705367710194704) internal successors, (67676), 43091 states have internal predecessors, (67676), 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) [2024-11-27 19:50:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43092 states to 43092 states and 67676 transitions. [2024-11-27 19:50:46,623 INFO L78 Accepts]: Start accepts. Automaton has 43092 states and 67676 transitions. Word has length 101 [2024-11-27 19:50:46,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:46,623 INFO L471 AbstractCegarLoop]: Abstraction has 43092 states and 67676 transitions. [2024-11-27 19:50:46,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-27 19:50:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 43092 states and 67676 transitions. [2024-11-27 19:50:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 19:50:46,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:46,627 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:46,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:50:46,628 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:46,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1943637733, now seen corresponding path program 1 times [2024-11-27 19:50:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556925580] [2024-11-27 19:50:46,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 19:50:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556925580] [2024-11-27 19:50:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556925580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215472734] [2024-11-27 19:50:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:46,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:46,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:46,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:46,984 INFO L87 Difference]: Start difference. First operand 43092 states and 67676 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-27 19:50:47,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:47,732 INFO L93 Difference]: Finished difference Result 105901 states and 166677 transitions. [2024-11-27 19:50:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 101 [2024-11-27 19:50:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:47,915 INFO L225 Difference]: With dead ends: 105901 [2024-11-27 19:50:47,915 INFO L226 Difference]: Without dead ends: 85805 [2024-11-27 19:50:47,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:47,938 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 550 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:47,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 973 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:48,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85805 states. [2024-11-27 19:50:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85805 to 66703. [2024-11-27 19:50:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66703 states, 66702 states have (on average 1.5682138466612696) internal successors, (104603), 66702 states have internal predecessors, (104603), 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) [2024-11-27 19:50:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66703 states to 66703 states and 104603 transitions. [2024-11-27 19:50:49,277 INFO L78 Accepts]: Start accepts. Automaton has 66703 states and 104603 transitions. Word has length 101 [2024-11-27 19:50:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:49,277 INFO L471 AbstractCegarLoop]: Abstraction has 66703 states and 104603 transitions. [2024-11-27 19:50:49,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-27 19:50:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 66703 states and 104603 transitions. [2024-11-27 19:50:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 19:50:49,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:49,282 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:49,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:50:49,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:49,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1410355513, now seen corresponding path program 1 times [2024-11-27 19:50:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898320607] [2024-11-27 19:50:49,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 19:50:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:49,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898320607] [2024-11-27 19:50:49,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898320607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:49,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:50:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119594629] [2024-11-27 19:50:49,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:49,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:50:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:49,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:50:49,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:50:49,583 INFO L87 Difference]: Start difference. First operand 66703 states and 104603 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-27 19:50:50,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:50,300 INFO L93 Difference]: Finished difference Result 113881 states and 179249 transitions. [2024-11-27 19:50:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:50:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 101 [2024-11-27 19:50:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:50,474 INFO L225 Difference]: With dead ends: 113881 [2024-11-27 19:50:50,474 INFO L226 Difference]: Without dead ends: 93785 [2024-11-27 19:50:50,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:50,511 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 558 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:50,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 961 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93785 states. [2024-11-27 19:50:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93785 to 90203. [2024-11-27 19:50:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90203 states, 90202 states have (on average 1.568579410656083) internal successors, (141489), 90202 states have internal predecessors, (141489), 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) [2024-11-27 19:50:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90203 states to 90203 states and 141489 transitions. [2024-11-27 19:50:52,416 INFO L78 Accepts]: Start accepts. Automaton has 90203 states and 141489 transitions. Word has length 101 [2024-11-27 19:50:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:52,417 INFO L471 AbstractCegarLoop]: Abstraction has 90203 states and 141489 transitions. [2024-11-27 19:50:52,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-27 19:50:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 90203 states and 141489 transitions. [2024-11-27 19:50:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 19:50:52,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:52,422 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:52,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 19:50:52,423 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:52,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash -366975703, now seen corresponding path program 1 times [2024-11-27 19:50:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:52,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001617665] [2024-11-27 19:50:52,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:52,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:52,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001617665] [2024-11-27 19:50:52,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001617665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:52,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:52,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:50:52,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034334938] [2024-11-27 19:50:52,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:52,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:52,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:52,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:52,684 INFO L87 Difference]: Start difference. First operand 90203 states and 141489 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-27 19:50:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:53,315 INFO L93 Difference]: Finished difference Result 146008 states and 229758 transitions. [2024-11-27 19:50:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:53,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 102 [2024-11-27 19:50:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:53,496 INFO L225 Difference]: With dead ends: 146008 [2024-11-27 19:50:53,496 INFO L226 Difference]: Without dead ends: 93993 [2024-11-27 19:50:53,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:53,550 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 241 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:53,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 767 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93993 states. [2024-11-27 19:50:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93993 to 63125. [2024-11-27 19:50:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63125 states, 63124 states have (on average 1.5641752740637476) internal successors, (98737), 63124 states have internal predecessors, (98737), 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) [2024-11-27 19:50:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63125 states to 63125 states and 98737 transitions. [2024-11-27 19:50:55,214 INFO L78 Accepts]: Start accepts. Automaton has 63125 states and 98737 transitions. Word has length 102 [2024-11-27 19:50:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:55,214 INFO L471 AbstractCegarLoop]: Abstraction has 63125 states and 98737 transitions. [2024-11-27 19:50:55,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-27 19:50:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 63125 states and 98737 transitions. [2024-11-27 19:50:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 19:50:55,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:55,217 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:55,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 19:50:55,217 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash 921631357, now seen corresponding path program 1 times [2024-11-27 19:50:55,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:55,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361976123] [2024-11-27 19:50:55,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361976123] [2024-11-27 19:50:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361976123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:55,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004137930] [2024-11-27 19:50:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:55,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:55,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:55,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:55,320 INFO L87 Difference]: Start difference. First operand 63125 states and 98737 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-27 19:50:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:56,245 INFO L93 Difference]: Finished difference Result 185559 states and 289928 transitions. [2024-11-27 19:50:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2024-11-27 19:50:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:56,524 INFO L225 Difference]: With dead ends: 185559 [2024-11-27 19:50:56,525 INFO L226 Difference]: Without dead ends: 122525 [2024-11-27 19:50:56,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:56,569 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:56,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:50:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122525 states. [2024-11-27 19:50:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122525 to 122523. [2024-11-27 19:50:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122523 states, 122522 states have (on average 1.552202869688709) internal successors, (190179), 122522 states have internal predecessors, (190179), 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) [2024-11-27 19:50:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122523 states to 122523 states and 190179 transitions. [2024-11-27 19:50:59,031 INFO L78 Accepts]: Start accepts. Automaton has 122523 states and 190179 transitions. Word has length 102 [2024-11-27 19:50:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:59,031 INFO L471 AbstractCegarLoop]: Abstraction has 122523 states and 190179 transitions. [2024-11-27 19:50:59,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-27 19:50:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 122523 states and 190179 transitions. [2024-11-27 19:50:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 19:50:59,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:59,035 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:59,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 19:50:59,035 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:59,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash 449051975, now seen corresponding path program 1 times [2024-11-27 19:50:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616400828] [2024-11-27 19:50:59,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616400828] [2024-11-27 19:50:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616400828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483944843] [2024-11-27 19:50:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:59,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:59,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:59,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:59,136 INFO L87 Difference]: Start difference. First operand 122523 states and 190179 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-27 19:51:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:00,883 INFO L93 Difference]: Finished difference Result 359965 states and 558013 transitions. [2024-11-27 19:51:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2024-11-27 19:51:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:01,316 INFO L225 Difference]: With dead ends: 359965 [2024-11-27 19:51:01,316 INFO L226 Difference]: Without dead ends: 237583 [2024-11-27 19:51:01,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:01,377 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:01,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237583 states. [2024-11-27 19:51:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237583 to 237581. [2024-11-27 19:51:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237581 states, 237580 states have (on average 1.5394603922889132) internal successors, (365745), 237580 states have internal predecessors, (365745), 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) [2024-11-27 19:51:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237581 states to 237581 states and 365745 transitions. [2024-11-27 19:51:05,574 INFO L78 Accepts]: Start accepts. Automaton has 237581 states and 365745 transitions. Word has length 102 [2024-11-27 19:51:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:05,574 INFO L471 AbstractCegarLoop]: Abstraction has 237581 states and 365745 transitions. [2024-11-27 19:51:05,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-27 19:51:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 237581 states and 365745 transitions. [2024-11-27 19:51:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 19:51:05,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:05,579 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:51:05,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 19:51:05,579 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:05,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:05,580 INFO L85 PathProgramCache]: Analyzing trace with hash -542283200, now seen corresponding path program 1 times [2024-11-27 19:51:05,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:05,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860056721] [2024-11-27 19:51:05,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:05,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 19:51:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860056721] [2024-11-27 19:51:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860056721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:05,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:05,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393180705] [2024-11-27 19:51:05,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:05,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:05,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:05,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:05,677 INFO L87 Difference]: Start difference. First operand 237581 states and 365745 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-27 19:51:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:08,251 INFO L93 Difference]: Finished difference Result 577047 states and 892021 transitions. [2024-11-27 19:51:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:08,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 [2024-11-27 19:51:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:09,686 INFO L225 Difference]: With dead ends: 577047 [2024-11-27 19:51:09,686 INFO L226 Difference]: Without dead ends: 339741 [2024-11-27 19:51:09,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:09,772 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 131 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:09,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:51:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339741 states. [2024-11-27 19:51:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339741 to 330199. [2024-11-27 19:51:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330199 states, 330198 states have (on average 1.53116917728151) internal successors, (505589), 330198 states have internal predecessors, (505589), 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) [2024-11-27 19:51:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330199 states to 330199 states and 505589 transitions. [2024-11-27 19:51:15,934 INFO L78 Accepts]: Start accepts. Automaton has 330199 states and 505589 transitions. Word has length 103 [2024-11-27 19:51:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:15,934 INFO L471 AbstractCegarLoop]: Abstraction has 330199 states and 505589 transitions. [2024-11-27 19:51:15,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-27 19:51:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 330199 states and 505589 transitions. [2024-11-27 19:51:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 19:51:15,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:15,940 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-27 19:51:15,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 19:51:15,940 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:15,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1444011090, now seen corresponding path program 1 times [2024-11-27 19:51:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420356823] [2024-11-27 19:51:15,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:51:16,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420356823] [2024-11-27 19:51:16,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420356823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127481168] [2024-11-27 19:51:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:16,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:16,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:16,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:16,087 INFO L87 Difference]: Start difference. First operand 330199 states and 505589 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-27 19:51:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:19,836 INFO L93 Difference]: Finished difference Result 802183 states and 1233511 transitions. [2024-11-27 19:51:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:19,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 [2024-11-27 19:51:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:20,849 INFO L225 Difference]: With dead ends: 802183 [2024-11-27 19:51:20,849 INFO L226 Difference]: Without dead ends: 472283 [2024-11-27 19:51:21,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:21,051 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 125 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:21,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 428 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]