./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.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_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1 --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 1b5bedda6fafe9d5e27c46cd442327641e760ea4d9632bf3cdc5cb7e6cff3dd5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:44:33,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:44:34,044 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:44:34,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:44:34,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:44:34,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:44:34,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:44:34,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:44:34,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:44:34,072 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:44:34,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:44:34,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:44:34,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:44:34,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:44:34,073 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:44:34,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:44:34,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:44:34,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:44:34,074 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:44:34,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:44:34,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:44:34,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:44:34,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:44:34,076 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_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1 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 -> 1b5bedda6fafe9d5e27c46cd442327641e760ea4d9632bf3cdc5cb7e6cff3dd5 [2024-12-02 15:44:34,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:44:34,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:44:34,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:44:34,317 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:44:34,317 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:44:34,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2024-12-02 15:44:36,923 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/data/5f395c624/0fc3edff02a04172afb99cb8602b1ea0/FLAG03c811ca3 [2024-12-02 15:44:37,340 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:44:37,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2024-12-02 15:44:37,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/data/5f395c624/0fc3edff02a04172afb99cb8602b1ea0/FLAG03c811ca3 [2024-12-02 15:44:37,510 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/data/5f395c624/0fc3edff02a04172afb99cb8602b1ea0 [2024-12-02 15:44:37,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:44:37,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:44:37,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:44:37,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:44:37,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:44:37,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:37" (1/1) ... [2024-12-02 15:44:37,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6ac0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:37, skipping insertion in model container [2024-12-02 15:44:37,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:37" (1/1) ... [2024-12-02 15:44:37,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:44:37,889 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_b3d09e8a-2381-4c5d-b508-66961ce97103/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2024-12-02 15:44:37,923 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_b3d09e8a-2381-4c5d-b508-66961ce97103/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2024-12-02 15:44:38,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:44:38,535 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:44:38,566 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_b3d09e8a-2381-4c5d-b508-66961ce97103/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2024-12-02 15:44:38,571 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_b3d09e8a-2381-4c5d-b508-66961ce97103/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2024-12-02 15:44:38,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:44:38,987 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:44:38,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38 WrapperNode [2024-12-02 15:44:38,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:44:38,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:44:38,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:44:38,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:44:38,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,306 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5157 [2024-12-02 15:44:39,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:44:39,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:44:39,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:44:39,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:44:39,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,505 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]. [2024-12-02 15:44:39,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:44:39,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:44:39,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:44:39,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:44:39,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (1/1) ... [2024-12-02 15:44:39,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:44:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:44:39,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:44:39,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:44:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:44:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:44:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:44:39,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:44:39,900 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:44:39,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:44:44,397 INFO L? ?]: Removed 749 outVars from TransFormulas that were not future-live. [2024-12-02 15:44:44,397 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:44:44,425 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:44:44,425 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 15:44:44,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:44 BoogieIcfgContainer [2024-12-02 15:44:44,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:44:44,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:44:44,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:44:44,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:44:44,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:44:37" (1/3) ... [2024-12-02 15:44:44,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139798c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:44, skipping insertion in model container [2024-12-02 15:44:44,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:38" (2/3) ... [2024-12-02 15:44:44,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139798c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:44, skipping insertion in model container [2024-12-02 15:44:44,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:44" (3/3) ... [2024-12-02 15:44:44,434 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2024-12-02 15:44:44,449 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:44:44,452 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c that has 1 procedures, 915 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 15:44:44,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:44:44,540 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;@5badfeef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:44:44,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:44:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:44,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 15:44:44,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:44,554 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] [2024-12-02 15:44:44,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:44,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1393205483, now seen corresponding path program 1 times [2024-12-02 15:44:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826044375] [2024-12-02 15:44:44,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:44,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826044375] [2024-12-02 15:44:44,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826044375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:44,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:44:44,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220826816] [2024-12-02 15:44:44,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:44,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:44,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:44,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:44,856 INFO L87 Difference]: Start difference. First operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 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 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:48,159 INFO L93 Difference]: Finished difference Result 2539 states and 4886 transitions. [2024-12-02 15:44:48,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-12-02 15:44:48,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:48,178 INFO L225 Difference]: With dead ends: 2539 [2024-12-02 15:44:48,178 INFO L226 Difference]: Without dead ends: 1600 [2024-12-02 15:44:48,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:48,185 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 1041 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:48,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 325 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 15:44:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2024-12-02 15:44:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2024-12-02 15:44:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.8410513141426783) internal successors, (2942), 1599 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2942 transitions. [2024-12-02 15:44:48,272 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2942 transitions. Word has length 24 [2024-12-02 15:44:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:48,273 INFO L471 AbstractCegarLoop]: Abstraction has 1600 states and 2942 transitions. [2024-12-02 15:44:48,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2942 transitions. [2024-12-02 15:44:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-02 15:44:48,274 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:48,274 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] [2024-12-02 15:44:48,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:44:48,275 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:48,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1759666809, now seen corresponding path program 1 times [2024-12-02 15:44:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453922805] [2024-12-02 15:44:48,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453922805] [2024-12-02 15:44:48,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453922805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:48,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:48,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:44:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252060858] [2024-12-02 15:44:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:48,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:44:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:48,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:44:48,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:44:48,465 INFO L87 Difference]: Start difference. First operand 1600 states and 2942 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:48,553 INFO L93 Difference]: Finished difference Result 1653 states and 3024 transitions. [2024-12-02 15:44:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:44:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-12-02 15:44:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:48,560 INFO L225 Difference]: With dead ends: 1653 [2024-12-02 15:44:48,560 INFO L226 Difference]: Without dead ends: 1600 [2024-12-02 15:44:48,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:44:48,562 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:48,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6359 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2024-12-02 15:44:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2024-12-02 15:44:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.816020025031289) internal successors, (2902), 1599 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2902 transitions. [2024-12-02 15:44:48,602 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2902 transitions. Word has length 27 [2024-12-02 15:44:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:48,602 INFO L471 AbstractCegarLoop]: Abstraction has 1600 states and 2902 transitions. [2024-12-02 15:44:48,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2902 transitions. [2024-12-02 15:44:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 15:44:48,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:48,604 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] [2024-12-02 15:44:48,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:44:48,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:48,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -757922131, now seen corresponding path program 1 times [2024-12-02 15:44:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327014574] [2024-12-02 15:44:48,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327014574] [2024-12-02 15:44:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327014574] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:48,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854750441] [2024-12-02 15:44:48,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:48,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:48,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:48,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:48,824 INFO L87 Difference]: Start difference. First operand 1600 states and 2902 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2024-12-02 15:44:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:49,157 INFO L93 Difference]: Finished difference Result 2188 states and 3838 transitions. [2024-12-02 15:44:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:44:49,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 [2024-12-02 15:44:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:49,165 INFO L225 Difference]: With dead ends: 2188 [2024-12-02 15:44:49,166 INFO L226 Difference]: Without dead ends: 2139 [2024-12-02 15:44:49,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:44:49,167 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 9700 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9700 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:49,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9700 Valid, 3471 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-12-02 15:44:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1647. [2024-12-02 15:44:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1645 states have (on average 1.809726443768997) internal successors, (2977), 1646 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2977 transitions. [2024-12-02 15:44:49,212 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2977 transitions. Word has length 66 [2024-12-02 15:44:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:49,212 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 2977 transitions. [2024-12-02 15:44:49,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2024-12-02 15:44:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2977 transitions. [2024-12-02 15:44:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:49,214 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:49,214 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] [2024-12-02 15:44:49,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:44:49,214 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:49,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash 365578237, now seen corresponding path program 1 times [2024-12-02 15:44:49,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:49,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166259802] [2024-12-02 15:44:49,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:49,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:49,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:49,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166259802] [2024-12-02 15:44:49,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166259802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:49,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:49,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:49,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157583885] [2024-12-02 15:44:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:49,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:49,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:49,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:49,324 INFO L87 Difference]: Start difference. First operand 1647 states and 2977 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2024-12-02 15:44:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:49,356 INFO L93 Difference]: Finished difference Result 1828 states and 3264 transitions. [2024-12-02 15:44:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:49,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 [2024-12-02 15:44:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:49,362 INFO L225 Difference]: With dead ends: 1828 [2024-12-02 15:44:49,363 INFO L226 Difference]: Without dead ends: 1732 [2024-12-02 15:44:49,363 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 [2024-12-02 15:44:49,364 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 1490 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:49,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1633 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-12-02 15:44:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-12-02 15:44:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.7980324074074074) internal successors, (3107), 1729 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3107 transitions. [2024-12-02 15:44:49,398 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3107 transitions. Word has length 68 [2024-12-02 15:44:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:49,398 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 3107 transitions. [2024-12-02 15:44:49,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2024-12-02 15:44:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3107 transitions. [2024-12-02 15:44:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:44:49,400 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:49,400 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] [2024-12-02 15:44:49,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:44:49,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:49,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash 432071749, now seen corresponding path program 1 times [2024-12-02 15:44:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:49,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449773927] [2024-12-02 15:44:49,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449773927] [2024-12-02 15:44:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449773927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:49,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144473284] [2024-12-02 15:44:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:49,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:49,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:49,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:49,756 INFO L87 Difference]: Start difference. First operand 1730 states and 3107 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-12-02 15:44:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:50,021 INFO L93 Difference]: Finished difference Result 1911 states and 3391 transitions. [2024-12-02 15:44:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:44:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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 [2024-12-02 15:44:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:50,029 INFO L225 Difference]: With dead ends: 1911 [2024-12-02 15:44:50,029 INFO L226 Difference]: Without dead ends: 1732 [2024-12-02 15:44:50,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:44:50,031 INFO L435 NwaCegarLoop]: 1555 mSDtfsCounter, 8992 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8992 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:50,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8992 Valid, 1928 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-12-02 15:44:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-12-02 15:44:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.796875) internal successors, (3105), 1729 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3105 transitions. [2024-12-02 15:44:50,073 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3105 transitions. Word has length 68 [2024-12-02 15:44:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:50,073 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 3105 transitions. [2024-12-02 15:44:50,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 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) [2024-12-02 15:44:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3105 transitions. [2024-12-02 15:44:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 15:44:50,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:50,075 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, 1] [2024-12-02 15:44:50,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:44:50,075 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:50,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 94599333, now seen corresponding path program 1 times [2024-12-02 15:44:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244028665] [2024-12-02 15:44:50,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244028665] [2024-12-02 15:44:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244028665] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:50,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:44:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044237154] [2024-12-02 15:44:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:50,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:44:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:50,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:44:50,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:44:50,335 INFO L87 Difference]: Start difference. First operand 1730 states and 3105 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-12-02 15:44:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:50,382 INFO L93 Difference]: Finished difference Result 1738 states and 3114 transitions. [2024-12-02 15:44:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:44:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2024-12-02 15:44:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:50,389 INFO L225 Difference]: With dead ends: 1738 [2024-12-02 15:44:50,390 INFO L226 Difference]: Without dead ends: 1736 [2024-12-02 15:44:50,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:44:50,391 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 0 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:50,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-12-02 15:44:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1736. [2024-12-02 15:44:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1734 states have (on average 1.7935409457900808) internal successors, (3110), 1735 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 3110 transitions. [2024-12-02 15:44:50,434 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 3110 transitions. Word has length 69 [2024-12-02 15:44:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:50,434 INFO L471 AbstractCegarLoop]: Abstraction has 1736 states and 3110 transitions. [2024-12-02 15:44:50,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2024-12-02 15:44:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 3110 transitions. [2024-12-02 15:44:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:50,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:50,435 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] [2024-12-02 15:44:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:44:50,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:50,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -988941275, now seen corresponding path program 1 times [2024-12-02 15:44:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896630336] [2024-12-02 15:44:50,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:50,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896630336] [2024-12-02 15:44:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896630336] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58629066] [2024-12-02 15:44:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:50,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:50,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:50,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:50,512 INFO L87 Difference]: Start difference. First operand 1736 states and 3110 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) [2024-12-02 15:44:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:50,549 INFO L93 Difference]: Finished difference Result 2090 states and 3654 transitions. [2024-12-02 15:44:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:50,549 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 [2024-12-02 15:44:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:50,557 INFO L225 Difference]: With dead ends: 2090 [2024-12-02 15:44:50,557 INFO L226 Difference]: Without dead ends: 1905 [2024-12-02 15:44:50,558 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 [2024-12-02 15:44:50,558 INFO L435 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:50,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1702 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-12-02 15:44:50,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1903. [2024-12-02 15:44:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1901 states have (on average 1.7690689110994213) internal successors, (3363), 1902 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 3363 transitions. [2024-12-02 15:44:50,604 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 3363 transitions. Word has length 70 [2024-12-02 15:44:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:50,604 INFO L471 AbstractCegarLoop]: Abstraction has 1903 states and 3363 transitions. [2024-12-02 15:44:50,604 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) [2024-12-02 15:44:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 3363 transitions. [2024-12-02 15:44:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:50,605 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:50,605 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] [2024-12-02 15:44:50,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:44:50,605 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:50,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash -725084891, now seen corresponding path program 1 times [2024-12-02 15:44:50,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:50,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414317124] [2024-12-02 15:44:50,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:50,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:50,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414317124] [2024-12-02 15:44:50,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414317124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:50,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:50,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:50,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906397964] [2024-12-02 15:44:50,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:50,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:50,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:50,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:50,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:50,683 INFO L87 Difference]: Start difference. First operand 1903 states and 3363 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) [2024-12-02 15:44:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:50,730 INFO L93 Difference]: Finished difference Result 2575 states and 4385 transitions. [2024-12-02 15:44:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:50,730 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 [2024-12-02 15:44:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:50,738 INFO L225 Difference]: With dead ends: 2575 [2024-12-02 15:44:50,738 INFO L226 Difference]: Without dead ends: 2223 [2024-12-02 15:44:50,739 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 [2024-12-02 15:44:50,740 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 1502 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:50,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2024-12-02 15:44:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2221. [2024-12-02 15:44:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2219 states have (on average 1.7291572780531772) internal successors, (3837), 2220 states have internal predecessors, (3837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 3837 transitions. [2024-12-02 15:44:50,798 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 3837 transitions. Word has length 70 [2024-12-02 15:44:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:50,798 INFO L471 AbstractCegarLoop]: Abstraction has 2221 states and 3837 transitions. [2024-12-02 15:44:50,798 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) [2024-12-02 15:44:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 3837 transitions. [2024-12-02 15:44:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:50,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:50,799 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] [2024-12-02 15:44:50,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:44:50,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:50,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 513177125, now seen corresponding path program 1 times [2024-12-02 15:44:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458992879] [2024-12-02 15:44:50,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458992879] [2024-12-02 15:44:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458992879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:50,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:50,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:50,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081422142] [2024-12-02 15:44:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:50,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:50,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:50,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:50,868 INFO L87 Difference]: Start difference. First operand 2221 states and 3837 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) [2024-12-02 15:44:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:50,922 INFO L93 Difference]: Finished difference Result 3497 states and 5751 transitions. [2024-12-02 15:44:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:50,922 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 [2024-12-02 15:44:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:50,932 INFO L225 Difference]: With dead ends: 3497 [2024-12-02 15:44:50,932 INFO L226 Difference]: Without dead ends: 2827 [2024-12-02 15:44:50,934 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 [2024-12-02 15:44:50,934 INFO L435 NwaCegarLoop]: 1615 mSDtfsCounter, 1500 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:50,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1706 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-12-02 15:44:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2024-12-02 15:44:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.6723343960325894) internal successors, (4721), 2824 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4721 transitions. [2024-12-02 15:44:51,011 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4721 transitions. Word has length 70 [2024-12-02 15:44:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:51,011 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4721 transitions. [2024-12-02 15:44:51,011 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) [2024-12-02 15:44:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4721 transitions. [2024-12-02 15:44:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:51,012 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:51,012 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] [2024-12-02 15:44:51,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:44:51,013 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:51,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1702291675, now seen corresponding path program 1 times [2024-12-02 15:44:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123130180] [2024-12-02 15:44:51,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:51,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123130180] [2024-12-02 15:44:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123130180] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840174450] [2024-12-02 15:44:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:51,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:51,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:51,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:51,105 INFO L87 Difference]: Start difference. First operand 2825 states and 4721 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) [2024-12-02 15:44:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:51,178 INFO L93 Difference]: Finished difference Result 5245 states and 8291 transitions. [2024-12-02 15:44:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:51,179 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 [2024-12-02 15:44:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:51,192 INFO L225 Difference]: With dead ends: 5245 [2024-12-02 15:44:51,192 INFO L226 Difference]: Without dead ends: 3971 [2024-12-02 15:44:51,194 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 [2024-12-02 15:44:51,195 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 1498 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:51,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2024-12-02 15:44:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 3969. [2024-12-02 15:44:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3969 states, 3967 states have (on average 1.603478699268969) internal successors, (6361), 3968 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3969 states to 3969 states and 6361 transitions. [2024-12-02 15:44:51,306 INFO L78 Accepts]: Start accepts. Automaton has 3969 states and 6361 transitions. Word has length 70 [2024-12-02 15:44:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:51,306 INFO L471 AbstractCegarLoop]: Abstraction has 3969 states and 6361 transitions. [2024-12-02 15:44:51,306 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) [2024-12-02 15:44:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3969 states and 6361 transitions. [2024-12-02 15:44:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:51,307 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:51,307 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] [2024-12-02 15:44:51,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:44:51,308 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:51,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 78641189, now seen corresponding path program 1 times [2024-12-02 15:44:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291991355] [2024-12-02 15:44:51,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:51,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291991355] [2024-12-02 15:44:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291991355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280222154] [2024-12-02 15:44:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:51,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:51,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:51,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:51,375 INFO L87 Difference]: Start difference. First operand 3969 states and 6361 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) [2024-12-02 15:44:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:51,494 INFO L93 Difference]: Finished difference Result 8549 states and 12987 transitions. [2024-12-02 15:44:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:51,494 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 [2024-12-02 15:44:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:51,514 INFO L225 Difference]: With dead ends: 8549 [2024-12-02 15:44:51,514 INFO L226 Difference]: Without dead ends: 6131 [2024-12-02 15:44:51,518 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 [2024-12-02 15:44:51,518 INFO L435 NwaCegarLoop]: 1611 mSDtfsCounter, 1496 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:51,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2024-12-02 15:44:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6129. [2024-12-02 15:44:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6129 states, 6127 states have (on average 1.5317447364126) internal successors, (9385), 6128 states have internal predecessors, (9385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 9385 transitions. [2024-12-02 15:44:51,698 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 9385 transitions. Word has length 70 [2024-12-02 15:44:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:51,698 INFO L471 AbstractCegarLoop]: Abstraction has 6129 states and 9385 transitions. [2024-12-02 15:44:51,698 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) [2024-12-02 15:44:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 9385 transitions. [2024-12-02 15:44:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:44:51,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:51,699 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] [2024-12-02 15:44:51,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:44:51,700 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:51,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1151855835, now seen corresponding path program 1 times [2024-12-02 15:44:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:51,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135599603] [2024-12-02 15:44:51,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:51,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:44:51,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135599603] [2024-12-02 15:44:51,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135599603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:51,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:51,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:44:51,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018047394] [2024-12-02 15:44:51,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:51,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:44:51,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:51,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:44:51,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:44:51,765 INFO L87 Difference]: Start difference. First operand 6129 states and 9385 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) [2024-12-02 15:44:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:51,885 INFO L93 Difference]: Finished difference Result 11000 states and 16431 transitions. [2024-12-02 15:44:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:44:51,885 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 [2024-12-02 15:44:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:51,904 INFO L225 Difference]: With dead ends: 11000 [2024-12-02 15:44:51,904 INFO L226 Difference]: Without dead ends: 8438 [2024-12-02 15:44:51,909 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 [2024-12-02 15:44:51,909 INFO L435 NwaCegarLoop]: 1625 mSDtfsCounter, 1506 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:51,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:44:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2024-12-02 15:44:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8436. [2024-12-02 15:44:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8436 states, 8434 states have (on average 1.496324401233104) internal successors, (12620), 8435 states have internal predecessors, (12620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8436 states to 8436 states and 12620 transitions. [2024-12-02 15:44:52,163 INFO L78 Accepts]: Start accepts. Automaton has 8436 states and 12620 transitions. Word has length 70 [2024-12-02 15:44:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:52,163 INFO L471 AbstractCegarLoop]: Abstraction has 8436 states and 12620 transitions. [2024-12-02 15:44:52,163 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) [2024-12-02 15:44:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8436 states and 12620 transitions. [2024-12-02 15:44:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:44:52,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:52,167 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] [2024-12-02 15:44:52,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:44:52,167 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:52,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1578521922, now seen corresponding path program 1 times [2024-12-02 15:44:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863278285] [2024-12-02 15:44:52,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 15:44:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863278285] [2024-12-02 15:44:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863278285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:52,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466117945] [2024-12-02 15:44:52,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:52,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:52,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:52,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:52,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:52,392 INFO L87 Difference]: Start difference. First operand 8436 states and 12620 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-12-02 15:44:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:53,335 INFO L93 Difference]: Finished difference Result 51170 states and 73331 transitions. [2024-12-02 15:44:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:44:53,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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 92 [2024-12-02 15:44:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:53,440 INFO L225 Difference]: With dead ends: 51170 [2024-12-02 15:44:53,440 INFO L226 Difference]: Without dead ends: 44288 [2024-12-02 15:44:53,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:44:53,457 INFO L435 NwaCegarLoop]: 1638 mSDtfsCounter, 8031 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8031 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:53,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8031 Valid, 4038 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44288 states. [2024-12-02 15:44:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44288 to 15316. [2024-12-02 15:44:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15316 states, 15314 states have (on average 1.4572286796395455) internal successors, (22316), 15315 states have internal predecessors, (22316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15316 states to 15316 states and 22316 transitions. [2024-12-02 15:44:53,951 INFO L78 Accepts]: Start accepts. Automaton has 15316 states and 22316 transitions. Word has length 92 [2024-12-02 15:44:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:53,951 INFO L471 AbstractCegarLoop]: Abstraction has 15316 states and 22316 transitions. [2024-12-02 15:44:53,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-12-02 15:44:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15316 states and 22316 transitions. [2024-12-02 15:44:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:44:53,954 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:53,954 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] [2024-12-02 15:44:53,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:44:53,954 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:53,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1842378306, now seen corresponding path program 1 times [2024-12-02 15:44:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:53,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553314258] [2024-12-02 15:44:53,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:53,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:44:54,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:54,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553314258] [2024-12-02 15:44:54,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553314258] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:54,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:54,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:54,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697850046] [2024-12-02 15:44:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:54,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:54,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:54,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:54,172 INFO L87 Difference]: Start difference. First operand 15316 states and 22316 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:55,086 INFO L93 Difference]: Finished difference Result 58050 states and 83027 transitions. [2024-12-02 15:44:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:44:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 92 [2024-12-02 15:44:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:55,162 INFO L225 Difference]: With dead ends: 58050 [2024-12-02 15:44:55,162 INFO L226 Difference]: Without dead ends: 51168 [2024-12-02 15:44:55,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:44:55,176 INFO L435 NwaCegarLoop]: 1636 mSDtfsCounter, 8054 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8054 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:55,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8054 Valid, 3945 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51168 states. [2024-12-02 15:44:55,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51168 to 25652. [2024-12-02 15:44:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25652 states, 25650 states have (on average 1.4339181286549707) internal successors, (36780), 25651 states have internal predecessors, (36780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:55,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25652 states to 25652 states and 36780 transitions. [2024-12-02 15:44:55,900 INFO L78 Accepts]: Start accepts. Automaton has 25652 states and 36780 transitions. Word has length 92 [2024-12-02 15:44:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:55,901 INFO L471 AbstractCegarLoop]: Abstraction has 25652 states and 36780 transitions. [2024-12-02 15:44:55,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 25652 states and 36780 transitions. [2024-12-02 15:44:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:44:55,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:55,905 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] [2024-12-02 15:44:55,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:44:55,905 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:55,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:55,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1214326974, now seen corresponding path program 1 times [2024-12-02 15:44:55,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:55,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076619128] [2024-12-02 15:44:55,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:44:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076619128] [2024-12-02 15:44:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076619128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:56,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:56,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728819458] [2024-12-02 15:44:56,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:56,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:56,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:56,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:56,059 INFO L87 Difference]: Start difference. First operand 25652 states and 36780 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:57,394 INFO L93 Difference]: Finished difference Result 64930 states and 92723 transitions. [2024-12-02 15:44:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:44:57,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 92 [2024-12-02 15:44:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:57,446 INFO L225 Difference]: With dead ends: 64930 [2024-12-02 15:44:57,447 INFO L226 Difference]: Without dead ends: 58048 [2024-12-02 15:44:57,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:44:57,461 INFO L435 NwaCegarLoop]: 1634 mSDtfsCounter, 8093 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8093 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:57,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8093 Valid, 3910 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:44:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58048 states. [2024-12-02 15:44:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58048 to 32532. [2024-12-02 15:44:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32532 states, 32530 states have (on average 1.4287119581924377) internal successors, (46476), 32531 states have internal predecessors, (46476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32532 states to 32532 states and 46476 transitions. [2024-12-02 15:44:58,188 INFO L78 Accepts]: Start accepts. Automaton has 32532 states and 46476 transitions. Word has length 92 [2024-12-02 15:44:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:44:58,188 INFO L471 AbstractCegarLoop]: Abstraction has 32532 states and 46476 transitions. [2024-12-02 15:44:58,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32532 states and 46476 transitions. [2024-12-02 15:44:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:44:58,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:44:58,191 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] [2024-12-02 15:44:58,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:44:58,191 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:44:58,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:44:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 865171522, now seen corresponding path program 1 times [2024-12-02 15:44:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:44:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333800823] [2024-12-02 15:44:58,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:44:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:44:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:44:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:44:58,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:44:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333800823] [2024-12-02 15:44:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333800823] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:44:58,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:44:58,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:44:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396520045] [2024-12-02 15:44:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:44:58,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:44:58,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:44:58,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:44:58,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:44:58,373 INFO L87 Difference]: Start difference. First operand 32532 states and 46476 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:44:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:44:59,583 INFO L93 Difference]: Finished difference Result 71810 states and 102419 transitions. [2024-12-02 15:44:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:44:59,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 92 [2024-12-02 15:44:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:44:59,638 INFO L225 Difference]: With dead ends: 71810 [2024-12-02 15:44:59,638 INFO L226 Difference]: Without dead ends: 64928 [2024-12-02 15:44:59,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:44:59,653 INFO L435 NwaCegarLoop]: 1632 mSDtfsCounter, 8143 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8143 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:44:59,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8143 Valid, 3901 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:44:59,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64928 states. [2024-12-02 15:45:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64928 to 39412. [2024-12-02 15:45:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39412 states, 39410 states have (on average 1.425323521948744) internal successors, (56172), 39411 states have internal predecessors, (56172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39412 states to 39412 states and 56172 transitions. [2024-12-02 15:45:00,501 INFO L78 Accepts]: Start accepts. Automaton has 39412 states and 56172 transitions. Word has length 92 [2024-12-02 15:45:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:00,501 INFO L471 AbstractCegarLoop]: Abstraction has 39412 states and 56172 transitions. [2024-12-02 15:45:00,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand 39412 states and 56172 transitions. [2024-12-02 15:45:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:45:00,504 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:00,504 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] [2024-12-02 15:45:00,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:45:00,504 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:00,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1648862910, now seen corresponding path program 1 times [2024-12-02 15:45:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:00,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96202499] [2024-12-02 15:45:00,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:00,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 15:45:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96202499] [2024-12-02 15:45:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96202499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:45:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074843374] [2024-12-02 15:45:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:00,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:00,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:00,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:00,634 INFO L87 Difference]: Start difference. First operand 39412 states and 56172 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:02,560 INFO L93 Difference]: Finished difference Result 78690 states and 112115 transitions. [2024-12-02 15:45:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 92 [2024-12-02 15:45:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:02,642 INFO L225 Difference]: With dead ends: 78690 [2024-12-02 15:45:02,642 INFO L226 Difference]: Without dead ends: 71808 [2024-12-02 15:45:02,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:45:02,661 INFO L435 NwaCegarLoop]: 1633 mSDtfsCounter, 8055 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8055 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:02,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8055 Valid, 4007 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71808 states. [2024-12-02 15:45:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71808 to 46292. [2024-12-02 15:45:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46292 states, 46290 states have (on average 1.4229423201555411) internal successors, (65868), 46291 states have internal predecessors, (65868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46292 states to 46292 states and 65868 transitions. [2024-12-02 15:45:03,718 INFO L78 Accepts]: Start accepts. Automaton has 46292 states and 65868 transitions. Word has length 92 [2024-12-02 15:45:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:03,718 INFO L471 AbstractCegarLoop]: Abstraction has 46292 states and 65868 transitions. [2024-12-02 15:45:03,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 46292 states and 65868 transitions. [2024-12-02 15:45:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 15:45:03,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:03,721 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] [2024-12-02 15:45:03,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:45:03,721 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:03,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1415607362, now seen corresponding path program 1 times [2024-12-02 15:45:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622954233] [2024-12-02 15:45:03,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:45:03,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:03,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622954233] [2024-12-02 15:45:03,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622954233] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:03,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:03,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:45:03,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374735608] [2024-12-02 15:45:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:03,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:03,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:03,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:03,857 INFO L87 Difference]: Start difference. First operand 46292 states and 65868 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:05,188 INFO L93 Difference]: Finished difference Result 81538 states and 116179 transitions. [2024-12-02 15:45:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:05,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 92 [2024-12-02 15:45:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:05,255 INFO L225 Difference]: With dead ends: 81538 [2024-12-02 15:45:05,255 INFO L226 Difference]: Without dead ends: 76672 [2024-12-02 15:45:05,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:45:05,268 INFO L435 NwaCegarLoop]: 1631 mSDtfsCounter, 8033 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8033 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:05,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8033 Valid, 4179 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76672 states. [2024-12-02 15:45:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76672 to 51156. [2024-12-02 15:45:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.4227626383078547) internal successors, (72780), 51155 states have internal predecessors, (72780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 72780 transitions. [2024-12-02 15:45:06,451 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 72780 transitions. Word has length 92 [2024-12-02 15:45:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:06,451 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 72780 transitions. [2024-12-02 15:45:06,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 72780 transitions. [2024-12-02 15:45:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 15:45:06,454 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:06,454 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] [2024-12-02 15:45:06,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:45:06,454 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:06,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash -821532615, now seen corresponding path program 1 times [2024-12-02 15:45:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:06,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534381369] [2024-12-02 15:45:06,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534381369] [2024-12-02 15:45:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534381369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118358063] [2024-12-02 15:45:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:06,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:06,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:06,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:06,556 INFO L87 Difference]: Start difference. First operand 51156 states and 72780 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) [2024-12-02 15:45:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:07,733 INFO L93 Difference]: Finished difference Result 100760 states and 142734 transitions. [2024-12-02 15:45:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:07,733 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 93 [2024-12-02 15:45:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:07,784 INFO L225 Difference]: With dead ends: 100760 [2024-12-02 15:45:07,784 INFO L226 Difference]: Without dead ends: 51158 [2024-12-02 15:45:07,807 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 [2024-12-02 15:45:07,808 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 53 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:07,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:07,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51158 states. [2024-12-02 15:45:09,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51158 to 51156. [2024-12-02 15:45:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.4093130546975798) internal successors, (72092), 51155 states have internal predecessors, (72092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 72092 transitions. [2024-12-02 15:45:09,468 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 72092 transitions. Word has length 93 [2024-12-02 15:45:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:09,468 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 72092 transitions. [2024-12-02 15:45:09,468 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) [2024-12-02 15:45:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 72092 transitions. [2024-12-02 15:45:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 15:45:09,470 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:09,470 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:09,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:45:09,471 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:09,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash 74864527, now seen corresponding path program 1 times [2024-12-02 15:45:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882856163] [2024-12-02 15:45:09,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882856163] [2024-12-02 15:45:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882856163] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:09,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871683406] [2024-12-02 15:45:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:09,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:09,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:09,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:09,663 INFO L87 Difference]: Start difference. First operand 51156 states and 72092 transitions. Second operand has 4 states, 4 states have (on average 23.25) 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) [2024-12-02 15:45:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:15,505 INFO L93 Difference]: Finished difference Result 54913 states and 78982 transitions. [2024-12-02 15:45:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:15,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) 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 93 [2024-12-02 15:45:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:15,550 INFO L225 Difference]: With dead ends: 54913 [2024-12-02 15:45:15,551 INFO L226 Difference]: Without dead ends: 53409 [2024-12-02 15:45:15,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:15,562 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 2407 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:15,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 838 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 15:45:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53409 states. [2024-12-02 15:45:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53409 to 53409. [2024-12-02 15:45:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53409 states, 53407 states have (on average 1.3983372966090588) internal successors, (74681), 53408 states have internal predecessors, (74681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53409 states to 53409 states and 74681 transitions. [2024-12-02 15:45:16,741 INFO L78 Accepts]: Start accepts. Automaton has 53409 states and 74681 transitions. Word has length 93 [2024-12-02 15:45:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:16,741 INFO L471 AbstractCegarLoop]: Abstraction has 53409 states and 74681 transitions. [2024-12-02 15:45:16,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) 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) [2024-12-02 15:45:16,741 INFO L276 IsEmpty]: Start isEmpty. Operand 53409 states and 74681 transitions. [2024-12-02 15:45:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 15:45:16,743 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:16,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:16,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:45:16,744 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:16,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:16,744 INFO L85 PathProgramCache]: Analyzing trace with hash -513089126, now seen corresponding path program 1 times [2024-12-02 15:45:16,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:16,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364816044] [2024-12-02 15:45:16,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:16,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364816044] [2024-12-02 15:45:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364816044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:16,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:16,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:16,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119292838] [2024-12-02 15:45:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:16,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:16,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:16,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:16,842 INFO L87 Difference]: Start difference. First operand 53409 states and 74681 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2024-12-02 15:45:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:17,362 INFO L93 Difference]: Finished difference Result 71675 states and 100386 transitions. [2024-12-02 15:45:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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 94 [2024-12-02 15:45:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:17,380 INFO L225 Difference]: With dead ends: 71675 [2024-12-02 15:45:17,380 INFO L226 Difference]: Without dead ends: 22073 [2024-12-02 15:45:17,398 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 [2024-12-02 15:45:17,398 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 47 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:17,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:17,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2024-12-02 15:45:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 22064. [2024-12-02 15:45:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22064 states, 22062 states have (on average 1.3993291632671563) internal successors, (30872), 22063 states have internal predecessors, (30872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22064 states to 22064 states and 30872 transitions. [2024-12-02 15:45:17,806 INFO L78 Accepts]: Start accepts. Automaton has 22064 states and 30872 transitions. Word has length 94 [2024-12-02 15:45:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:17,806 INFO L471 AbstractCegarLoop]: Abstraction has 22064 states and 30872 transitions. [2024-12-02 15:45:17,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2024-12-02 15:45:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22064 states and 30872 transitions. [2024-12-02 15:45:17,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 15:45:17,807 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:17,807 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] [2024-12-02 15:45:17,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:45:17,807 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:17,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1679011147, now seen corresponding path program 1 times [2024-12-02 15:45:17,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:17,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873369446] [2024-12-02 15:45:17,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:17,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:17,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873369446] [2024-12-02 15:45:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873369446] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:17,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111926679] [2024-12-02 15:45:17,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:17,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:17,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:17,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:17,870 INFO L87 Difference]: Start difference. First operand 22064 states and 30872 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:18,059 INFO L93 Difference]: Finished difference Result 31188 states and 43594 transitions. [2024-12-02 15:45:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-12-02 15:45:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:18,070 INFO L225 Difference]: With dead ends: 31188 [2024-12-02 15:45:18,070 INFO L226 Difference]: Without dead ends: 12946 [2024-12-02 15:45:18,078 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 [2024-12-02 15:45:18,079 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 49 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:18,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:18,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12946 states. [2024-12-02 15:45:18,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12946 to 12944. [2024-12-02 15:45:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12944 states, 12942 states have (on average 1.3932931540720137) internal successors, (18032), 12943 states have internal predecessors, (18032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12944 states to 12944 states and 18032 transitions. [2024-12-02 15:45:18,300 INFO L78 Accepts]: Start accepts. Automaton has 12944 states and 18032 transitions. Word has length 95 [2024-12-02 15:45:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:18,300 INFO L471 AbstractCegarLoop]: Abstraction has 12944 states and 18032 transitions. [2024-12-02 15:45:18,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 12944 states and 18032 transitions. [2024-12-02 15:45:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 15:45:18,301 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:18,302 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:18,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:45:18,302 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:18,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2074420012, now seen corresponding path program 1 times [2024-12-02 15:45:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020764926] [2024-12-02 15:45:18,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 15:45:18,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020764926] [2024-12-02 15:45:18,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020764926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:18,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:18,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:45:18,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774155303] [2024-12-02 15:45:18,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:18,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:18,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:18,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:18,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:18,369 INFO L87 Difference]: Start difference. First operand 12944 states and 18032 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 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) [2024-12-02 15:45:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:21,303 INFO L93 Difference]: Finished difference Result 17452 states and 25415 transitions. [2024-12-02 15:45:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 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 95 [2024-12-02 15:45:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:21,315 INFO L225 Difference]: With dead ends: 17452 [2024-12-02 15:45:21,315 INFO L226 Difference]: Without dead ends: 14446 [2024-12-02 15:45:21,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:21,319 INFO L435 NwaCegarLoop]: 591 mSDtfsCounter, 849 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:21,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 598 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 15:45:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14446 states. [2024-12-02 15:45:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14446 to 14446. [2024-12-02 15:45:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14446 states, 14444 states have (on average 1.381473276100803) internal successors, (19954), 14445 states have internal predecessors, (19954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14446 states to 14446 states and 19954 transitions. [2024-12-02 15:45:21,560 INFO L78 Accepts]: Start accepts. Automaton has 14446 states and 19954 transitions. Word has length 95 [2024-12-02 15:45:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:21,560 INFO L471 AbstractCegarLoop]: Abstraction has 14446 states and 19954 transitions. [2024-12-02 15:45:21,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 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) [2024-12-02 15:45:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14446 states and 19954 transitions. [2024-12-02 15:45:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 15:45:21,561 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:21,561 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] [2024-12-02 15:45:21,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:45:21,561 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:21,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash -105500451, now seen corresponding path program 1 times [2024-12-02 15:45:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415573476] [2024-12-02 15:45:21,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415573476] [2024-12-02 15:45:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415573476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:21,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709782667] [2024-12-02 15:45:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:21,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:21,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:21,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:21,619 INFO L87 Difference]: Start difference. First operand 14446 states and 19954 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:21,731 INFO L93 Difference]: Finished difference Result 19010 states and 26256 transitions. [2024-12-02 15:45:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-12-02 15:45:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:21,741 INFO L225 Difference]: With dead ends: 19010 [2024-12-02 15:45:21,741 INFO L226 Difference]: Without dead ends: 9888 [2024-12-02 15:45:21,746 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 [2024-12-02 15:45:21,747 INFO L435 NwaCegarLoop]: 1591 mSDtfsCounter, 46 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:21,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9888 states. [2024-12-02 15:45:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9888 to 9886. [2024-12-02 15:45:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 9884 states have (on average 1.3753541076487252) internal successors, (13594), 9885 states have internal predecessors, (13594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 13594 transitions. [2024-12-02 15:45:21,890 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 13594 transitions. Word has length 97 [2024-12-02 15:45:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:21,890 INFO L471 AbstractCegarLoop]: Abstraction has 9886 states and 13594 transitions. [2024-12-02 15:45:21,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 13594 transitions. [2024-12-02 15:45:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 15:45:21,891 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:21,891 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 15:45:21,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:45:21,891 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:21,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 887952111, now seen corresponding path program 1 times [2024-12-02 15:45:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:21,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936642950] [2024-12-02 15:45:21,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936642950] [2024-12-02 15:45:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936642950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874746395] [2024-12-02 15:45:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:21,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:21,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:21,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:21,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:21,954 INFO L87 Difference]: Start difference. First operand 9886 states and 13594 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) [2024-12-02 15:45:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:22,022 INFO L93 Difference]: Finished difference Result 12170 states and 16716 transitions. [2024-12-02 15:45:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:22,022 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 99 [2024-12-02 15:45:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:22,029 INFO L225 Difference]: With dead ends: 12170 [2024-12-02 15:45:22,029 INFO L226 Difference]: Without dead ends: 7608 [2024-12-02 15:45:22,032 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 [2024-12-02 15:45:22,033 INFO L435 NwaCegarLoop]: 1584 mSDtfsCounter, 43 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:22,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7608 states. [2024-12-02 15:45:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7608 to 7606. [2024-12-02 15:45:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7604 states have (on average 1.3734876380852183) internal successors, (10444), 7605 states have internal predecessors, (10444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 10444 transitions. [2024-12-02 15:45:22,121 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 10444 transitions. Word has length 99 [2024-12-02 15:45:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:22,121 INFO L471 AbstractCegarLoop]: Abstraction has 7606 states and 10444 transitions. [2024-12-02 15:45:22,121 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-12-02 15:45:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 10444 transitions. [2024-12-02 15:45:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 15:45:22,122 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:22,122 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:22,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:45:22,122 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:22,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1167946625, now seen corresponding path program 1 times [2024-12-02 15:45:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419267532] [2024-12-02 15:45:22,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419267532] [2024-12-02 15:45:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419267532] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:22,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977829370] [2024-12-02 15:45:22,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:22,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:22,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:22,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:22,219 INFO L87 Difference]: Start difference. First operand 7606 states and 10444 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2024-12-02 15:45:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:22,284 INFO L93 Difference]: Finished difference Result 8750 states and 11991 transitions. [2024-12-02 15:45:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:22,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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 101 [2024-12-02 15:45:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:22,289 INFO L225 Difference]: With dead ends: 8750 [2024-12-02 15:45:22,289 INFO L226 Difference]: Without dead ends: 6468 [2024-12-02 15:45:22,291 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 [2024-12-02 15:45:22,291 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 40 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:22,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2024-12-02 15:45:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6466. [2024-12-02 15:45:22,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6466 states, 6464 states have (on average 1.374381188118812) internal successors, (8884), 6465 states have internal predecessors, (8884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 8884 transitions. [2024-12-02 15:45:22,356 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 8884 transitions. Word has length 101 [2024-12-02 15:45:22,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:22,356 INFO L471 AbstractCegarLoop]: Abstraction has 6466 states and 8884 transitions. [2024-12-02 15:45:22,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 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) [2024-12-02 15:45:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 8884 transitions. [2024-12-02 15:45:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 15:45:22,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:22,357 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:22,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:45:22,357 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:22,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2022994579, now seen corresponding path program 1 times [2024-12-02 15:45:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345119708] [2024-12-02 15:45:22,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345119708] [2024-12-02 15:45:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345119708] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347851683] [2024-12-02 15:45:23,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:23,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:23,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:45:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:23,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 15:45:23,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:45:23,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:45:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347851683] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:24,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-12-02 15:45:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849835076] [2024-12-02 15:45:24,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:24,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:45:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:24,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:45:24,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-12-02 15:45:24,214 INFO L87 Difference]: Start difference. First operand 6466 states and 8884 transitions. Second operand has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:26,749 INFO L93 Difference]: Finished difference Result 12879 states and 17391 transitions. [2024-12-02 15:45:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:45:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 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 [2024-12-02 15:45:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:26,757 INFO L225 Difference]: With dead ends: 12879 [2024-12-02 15:45:26,757 INFO L226 Difference]: Without dead ends: 11737 [2024-12-02 15:45:26,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=839, Invalid=3321, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 15:45:26,761 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 20151 mSDsluCounter, 5011 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20151 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:26,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20151 Valid, 6533 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:45:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2024-12-02 15:45:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 11443. [2024-12-02 15:45:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11443 states, 11441 states have (on average 1.339393409666987) internal successors, (15324), 11442 states have internal predecessors, (15324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11443 states to 11443 states and 15324 transitions. [2024-12-02 15:45:26,942 INFO L78 Accepts]: Start accepts. Automaton has 11443 states and 15324 transitions. Word has length 103 [2024-12-02 15:45:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:26,942 INFO L471 AbstractCegarLoop]: Abstraction has 11443 states and 15324 transitions. [2024-12-02 15:45:26,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11443 states and 15324 transitions. [2024-12-02 15:45:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:45:26,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:26,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:26,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:45:27,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:45:27,144 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:27,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -479777408, now seen corresponding path program 1 times [2024-12-02 15:45:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:27,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517413038] [2024-12-02 15:45:27,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:27,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517413038] [2024-12-02 15:45:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517413038] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172824465] [2024-12-02 15:45:27,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:27,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:27,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:27,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:27,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:45:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:28,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:45:28,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:28,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172824465] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:29,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:29,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 15:45:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400327184] [2024-12-02 15:45:29,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:29,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 15:45:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:29,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 15:45:29,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-12-02 15:45:29,557 INFO L87 Difference]: Start difference. First operand 11443 states and 15324 transitions. Second operand has 28 states, 28 states have (on average 9.0) internal successors, (252), 27 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:31,083 INFO L93 Difference]: Finished difference Result 26099 states and 34318 transitions. [2024-12-02 15:45:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:45:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.0) internal successors, (252), 27 states have internal predecessors, (252), 0 states have call successors, (0), 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 104 [2024-12-02 15:45:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:31,095 INFO L225 Difference]: With dead ends: 26099 [2024-12-02 15:45:31,095 INFO L226 Difference]: Without dead ends: 20314 [2024-12-02 15:45:31,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=505, Invalid=1847, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:45:31,098 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 17604 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17604 SdHoareTripleChecker+Valid, 6482 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:31,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17604 Valid, 6482 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:45:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20314 states. [2024-12-02 15:45:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20314 to 20190. [2024-12-02 15:45:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20190 states, 20188 states have (on average 1.315236774321379) internal successors, (26552), 20189 states have internal predecessors, (26552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20190 states to 20190 states and 26552 transitions. [2024-12-02 15:45:31,509 INFO L78 Accepts]: Start accepts. Automaton has 20190 states and 26552 transitions. Word has length 104 [2024-12-02 15:45:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:31,509 INFO L471 AbstractCegarLoop]: Abstraction has 20190 states and 26552 transitions. [2024-12-02 15:45:31,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.0) internal successors, (252), 27 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand 20190 states and 26552 transitions. [2024-12-02 15:45:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 15:45:31,510 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:31,510 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:31,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:45:31,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 15:45:31,710 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:31,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1353120014, now seen corresponding path program 1 times [2024-12-02 15:45:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:31,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609412623] [2024-12-02 15:45:31,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:31,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:32,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:32,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609412623] [2024-12-02 15:45:32,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609412623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:32,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833336670] [2024-12-02 15:45:32,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:32,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:32,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:32,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:45:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:32,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 15:45:32,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:33,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833336670] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:35,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 16] total 35 [2024-12-02 15:45:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967494467] [2024-12-02 15:45:35,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:35,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 15:45:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:35,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 15:45:35,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:45:35,994 INFO L87 Difference]: Start difference. First operand 20190 states and 26552 transitions. Second operand has 35 states, 35 states have (on average 7.371428571428571) internal successors, (258), 35 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:39,482 INFO L93 Difference]: Finished difference Result 56976 states and 74302 transitions. [2024-12-02 15:45:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:45:39,483 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.371428571428571) internal successors, (258), 35 states have internal predecessors, (258), 0 states have call successors, (0), 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 104 [2024-12-02 15:45:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:39,510 INFO L225 Difference]: With dead ends: 56976 [2024-12-02 15:45:39,510 INFO L226 Difference]: Without dead ends: 42550 [2024-12-02 15:45:39,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1410, Invalid=4290, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 15:45:39,519 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 16079 mSDsluCounter, 14636 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16079 SdHoareTripleChecker+Valid, 16197 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:39,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16079 Valid, 16197 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:45:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42550 states. [2024-12-02 15:45:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42550 to 31291. [2024-12-02 15:45:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31291 states, 31289 states have (on average 1.2941608872127586) internal successors, (40493), 31290 states have internal predecessors, (40493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31291 states to 31291 states and 40493 transitions. [2024-12-02 15:45:40,432 INFO L78 Accepts]: Start accepts. Automaton has 31291 states and 40493 transitions. Word has length 104 [2024-12-02 15:45:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:40,432 INFO L471 AbstractCegarLoop]: Abstraction has 31291 states and 40493 transitions. [2024-12-02 15:45:40,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.371428571428571) internal successors, (258), 35 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:40,432 INFO L276 IsEmpty]: Start isEmpty. Operand 31291 states and 40493 transitions. [2024-12-02 15:45:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:45:40,433 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:40,433 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:40,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:45:40,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 15:45:40,634 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:40,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash -72239707, now seen corresponding path program 1 times [2024-12-02 15:45:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:40,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480675712] [2024-12-02 15:45:40,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:40,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:40,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480675712] [2024-12-02 15:45:40,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480675712] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:40,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310725179] [2024-12-02 15:45:40,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:40,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:40,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:40,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:40,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:45:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:41,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:45:41,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:41,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310725179] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:42,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-12-02 15:45:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972720629] [2024-12-02 15:45:42,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:42,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:45:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:42,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:45:42,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:45:42,313 INFO L87 Difference]: Start difference. First operand 31291 states and 40493 transitions. Second operand has 23 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:44,013 INFO L93 Difference]: Finished difference Result 83525 states and 107595 transitions. [2024-12-02 15:45:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:45:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 0 states have call successors, (0), 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 105 [2024-12-02 15:45:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:44,062 INFO L225 Difference]: With dead ends: 83525 [2024-12-02 15:45:44,062 INFO L226 Difference]: Without dead ends: 58498 [2024-12-02 15:45:44,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:45:44,075 INFO L435 NwaCegarLoop]: 1529 mSDtfsCounter, 17168 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17168 SdHoareTripleChecker+Valid, 4766 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:44,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17168 Valid, 4766 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58498 states. [2024-12-02 15:45:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58498 to 57820. [2024-12-02 15:45:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57820 states, 57818 states have (on average 1.273305890899028) internal successors, (73620), 57819 states have internal predecessors, (73620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57820 states to 57820 states and 73620 transitions. [2024-12-02 15:45:45,891 INFO L78 Accepts]: Start accepts. Automaton has 57820 states and 73620 transitions. Word has length 105 [2024-12-02 15:45:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:45,891 INFO L471 AbstractCegarLoop]: Abstraction has 57820 states and 73620 transitions. [2024-12-02 15:45:45,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.73913043478261) internal successors, (247), 22 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 57820 states and 73620 transitions. [2024-12-02 15:45:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 15:45:45,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:45,892 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:45,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:45:46,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:46,093 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:46,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1110372443, now seen corresponding path program 1 times [2024-12-02 15:45:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:46,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168850393] [2024-12-02 15:45:46,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:46,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168850393] [2024-12-02 15:45:46,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168850393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:46,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327990606] [2024-12-02 15:45:46,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:46,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:46,369 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:46,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:45:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:46,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:45:46,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:47,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327990606] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:47,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 15:45:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192775695] [2024-12-02 15:45:47,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:47,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 15:45:47,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:47,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 15:45:47,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-12-02 15:45:47,967 INFO L87 Difference]: Start difference. First operand 57820 states and 73620 transitions. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:49,749 INFO L93 Difference]: Finished difference Result 105606 states and 133942 transitions. [2024-12-02 15:45:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:45:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 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 105 [2024-12-02 15:45:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:49,797 INFO L225 Difference]: With dead ends: 105606 [2024-12-02 15:45:49,797 INFO L226 Difference]: Without dead ends: 59576 [2024-12-02 15:45:49,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:45:49,819 INFO L435 NwaCegarLoop]: 1529 mSDtfsCounter, 7922 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7922 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:49,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7922 Valid, 6436 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59576 states. [2024-12-02 15:45:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59576 to 55328. [2024-12-02 15:45:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55328 states, 55326 states have (on average 1.2576546289267252) internal successors, (69581), 55327 states have internal predecessors, (69581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55328 states to 55328 states and 69581 transitions. [2024-12-02 15:45:52,064 INFO L78 Accepts]: Start accepts. Automaton has 55328 states and 69581 transitions. Word has length 105 [2024-12-02 15:45:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:52,064 INFO L471 AbstractCegarLoop]: Abstraction has 55328 states and 69581 transitions. [2024-12-02 15:45:52,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 55328 states and 69581 transitions. [2024-12-02 15:45:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 15:45:52,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:52,065 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:52,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:45:52,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:52,266 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:52,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 449761474, now seen corresponding path program 1 times [2024-12-02 15:45:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234551792] [2024-12-02 15:45:52,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234551792] [2024-12-02 15:45:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234551792] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024713649] [2024-12-02 15:45:52,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:52,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:52,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:52,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:45:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:52,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:45:52,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:53,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:45:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024713649] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:45:54,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:45:54,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 29 [2024-12-02 15:45:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151092233] [2024-12-02 15:45:54,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:45:54,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:45:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:54,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:45:54,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:45:54,666 INFO L87 Difference]: Start difference. First operand 55328 states and 69581 transitions. Second operand has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 29 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:45:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:58,116 INFO L93 Difference]: Finished difference Result 150650 states and 188813 transitions. [2024-12-02 15:45:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:45:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 29 states have internal predecessors, (286), 0 states have call successors, (0), 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 106 [2024-12-02 15:45:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:58,192 INFO L225 Difference]: With dead ends: 150650 [2024-12-02 15:45:58,192 INFO L226 Difference]: Without dead ends: 106763 [2024-12-02 15:45:58,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=1455, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:45:58,212 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 5123 mSDsluCounter, 6727 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5123 SdHoareTripleChecker+Valid, 8268 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:58,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5123 Valid, 8268 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:45:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106763 states. [2024-12-02 15:46:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106763 to 105631. [2024-12-02 15:46:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105631 states, 105629 states have (on average 1.239915174809948) internal successors, (130971), 105630 states have internal predecessors, (130971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105631 states to 105631 states and 130971 transitions. [2024-12-02 15:46:02,024 INFO L78 Accepts]: Start accepts. Automaton has 105631 states and 130971 transitions. Word has length 106 [2024-12-02 15:46:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:02,024 INFO L471 AbstractCegarLoop]: Abstraction has 105631 states and 130971 transitions. [2024-12-02 15:46:02,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.862068965517242) internal successors, (286), 29 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 105631 states and 130971 transitions. [2024-12-02 15:46:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:46:02,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:02,027 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:02,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:46:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 15:46:02,227 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:02,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1895182117, now seen corresponding path program 1 times [2024-12-02 15:46:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457209118] [2024-12-02 15:46:02,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:03,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457209118] [2024-12-02 15:46:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457209118] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367598801] [2024-12-02 15:46:03,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:03,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:03,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:46:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:03,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 15:46:03,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:04,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367598801] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:05,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-12-02 15:46:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197414600] [2024-12-02 15:46:05,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:05,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:46:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:05,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:46:05,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:46:05,186 INFO L87 Difference]: Start difference. First operand 105631 states and 130971 transitions. Second operand has 33 states, 33 states have (on average 9.242424242424242) internal successors, (305), 33 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:11,606 INFO L93 Difference]: Finished difference Result 145268 states and 179484 transitions. [2024-12-02 15:46:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:46:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.242424242424242) internal successors, (305), 33 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 15:46:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:11,705 INFO L225 Difference]: With dead ends: 145268 [2024-12-02 15:46:11,705 INFO L226 Difference]: Without dead ends: 104690 [2024-12-02 15:46:11,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:46:11,732 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 11172 mSDsluCounter, 23008 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11172 SdHoareTripleChecker+Valid, 24551 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:11,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11172 Valid, 24551 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:46:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104690 states. [2024-12-02 15:46:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104690 to 90818. [2024-12-02 15:46:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90818 states, 90816 states have (on average 1.2365552325581395) internal successors, (112299), 90817 states have internal predecessors, (112299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90818 states to 90818 states and 112299 transitions. [2024-12-02 15:46:14,809 INFO L78 Accepts]: Start accepts. Automaton has 90818 states and 112299 transitions. Word has length 107 [2024-12-02 15:46:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:14,810 INFO L471 AbstractCegarLoop]: Abstraction has 90818 states and 112299 transitions. [2024-12-02 15:46:14,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.242424242424242) internal successors, (305), 33 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 90818 states and 112299 transitions. [2024-12-02 15:46:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 15:46:14,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:14,811 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:14,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:46:15,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 15:46:15,012 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:15,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 580307637, now seen corresponding path program 1 times [2024-12-02 15:46:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:15,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727209175] [2024-12-02 15:46:15,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:15,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727209175] [2024-12-02 15:46:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727209175] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:15,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402163429] [2024-12-02 15:46:15,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:15,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:15,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:15,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:15,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:46:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:15,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 15:46:15,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:15,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402163429] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:16,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:16,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-12-02 15:46:16,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580906525] [2024-12-02 15:46:16,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:16,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:46:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:16,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:46:16,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:46:16,603 INFO L87 Difference]: Start difference. First operand 90818 states and 112299 transitions. Second operand has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 21 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:46:22,747 INFO L93 Difference]: Finished difference Result 256110 states and 316696 transitions. [2024-12-02 15:46:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:46:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 21 states have internal predecessors, (241), 0 states have call successors, (0), 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 107 [2024-12-02 15:46:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:46:22,896 INFO L225 Difference]: With dead ends: 256110 [2024-12-02 15:46:22,896 INFO L226 Difference]: Without dead ends: 177816 [2024-12-02 15:46:22,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:46:22,933 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 13897 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13897 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:46:22,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13897 Valid, 6582 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:46:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177816 states. [2024-12-02 15:46:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177816 to 176156. [2024-12-02 15:46:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176156 states, 176154 states have (on average 1.2235487130578926) internal successors, (215533), 176155 states have internal predecessors, (215533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176156 states to 176156 states and 215533 transitions. [2024-12-02 15:46:28,761 INFO L78 Accepts]: Start accepts. Automaton has 176156 states and 215533 transitions. Word has length 107 [2024-12-02 15:46:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:46:28,762 INFO L471 AbstractCegarLoop]: Abstraction has 176156 states and 215533 transitions. [2024-12-02 15:46:28,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.954545454545455) internal successors, (241), 21 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:46:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 176156 states and 215533 transitions. [2024-12-02 15:46:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 15:46:28,764 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:46:28,764 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:46:28,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:46:28,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 15:46:28,964 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:46:28,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:46:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2054357102, now seen corresponding path program 1 times [2024-12-02 15:46:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:46:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277852217] [2024-12-02 15:46:28,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:46:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:46:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277852217] [2024-12-02 15:46:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277852217] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:46:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244521134] [2024-12-02 15:46:32,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:46:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:46:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:46:32,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:46:32,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:46:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:46:32,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-12-02 15:46:32,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:46:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:44,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:46:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:46:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244521134] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:46:56,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:46:56,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 32, 37] total 103 [2024-12-02 15:46:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764098181] [2024-12-02 15:46:56,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:46:56,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-12-02 15:46:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:46:56,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-12-02 15:46:56,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=9558, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 15:46:56,654 INFO L87 Difference]: Start difference. First operand 176156 states and 215533 transitions. Second operand has 103 states, 103 states have (on average 3.0097087378640777) internal successors, (310), 103 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:55:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:55:55,018 INFO L93 Difference]: Finished difference Result 672823 states and 816310 transitions. [2024-12-02 15:55:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 523 states. [2024-12-02 15:55:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.0097087378640777) internal successors, (310), 103 states have internal predecessors, (310), 0 states have call successors, (0), 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 108 [2024-12-02 15:55:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:55:55,642 INFO L225 Difference]: With dead ends: 672823 [2024-12-02 15:55:55,642 INFO L226 Difference]: Without dead ends: 612732 [2024-12-02 15:55:55,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 615 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156552 ImplicationChecksByTransitivity, 489.0s TimeCoverageRelationStatistics Valid=55195, Invalid=324877, Unknown=0, NotChecked=0, Total=380072 [2024-12-02 15:55:55,725 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 45723 mSDsluCounter, 52035 mSDsCounter, 0 mSdLazyCounter, 23429 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45723 SdHoareTripleChecker+Valid, 53743 SdHoareTripleChecker+Invalid, 23818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 23429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:55:55,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45723 Valid, 53743 Invalid, 23818 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [389 Valid, 23429 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time] [2024-12-02 15:55:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612732 states. [2024-12-02 15:56:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612732 to 186489. [2024-12-02 15:56:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186489 states, 186487 states have (on average 1.2238761951235206) internal successors, (228237), 186488 states have internal predecessors, (228237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186489 states to 186489 states and 228237 transitions. [2024-12-02 15:56:07,025 INFO L78 Accepts]: Start accepts. Automaton has 186489 states and 228237 transitions. Word has length 108 [2024-12-02 15:56:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:07,026 INFO L471 AbstractCegarLoop]: Abstraction has 186489 states and 228237 transitions. [2024-12-02 15:56:07,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.0097087378640777) internal successors, (310), 103 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 186489 states and 228237 transitions. [2024-12-02 15:56:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 15:56:07,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:07,027 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:07,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 15:56:07,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 15:56:07,228 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:07,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1629652605, now seen corresponding path program 1 times [2024-12-02 15:56:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862015253] [2024-12-02 15:56:07,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:07,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:08,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862015253] [2024-12-02 15:56:08,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862015253] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:08,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324038087] [2024-12-02 15:56:08,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:08,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:08,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:08,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:08,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:56:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:08,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 15:56:08,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:09,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324038087] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:10,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 17] total 37 [2024-12-02 15:56:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266922251] [2024-12-02 15:56:10,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:10,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 15:56:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:10,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 15:56:10,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:56:10,994 INFO L87 Difference]: Start difference. First operand 186489 states and 228237 transitions. Second operand has 37 states, 37 states have (on average 7.702702702702703) internal successors, (285), 37 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:32,406 INFO L93 Difference]: Finished difference Result 466425 states and 571056 transitions. [2024-12-02 15:56:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 15:56:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.702702702702703) internal successors, (285), 37 states have internal predecessors, (285), 0 states have call successors, (0), 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 109 [2024-12-02 15:56:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:32,813 INFO L225 Difference]: With dead ends: 466425 [2024-12-02 15:56:32,813 INFO L226 Difference]: Without dead ends: 406592 [2024-12-02 15:56:32,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=838, Invalid=3452, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 15:56:32,869 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 11963 mSDsluCounter, 20120 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11963 SdHoareTripleChecker+Valid, 21655 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:32,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11963 Valid, 21655 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:56:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406592 states. [2024-12-02 15:56:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406592 to 166825. [2024-12-02 15:56:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166825 states, 166823 states have (on average 1.2223554306060915) internal successors, (203917), 166824 states have internal predecessors, (203917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166825 states to 166825 states and 203917 transitions. [2024-12-02 15:56:43,369 INFO L78 Accepts]: Start accepts. Automaton has 166825 states and 203917 transitions. Word has length 109 [2024-12-02 15:56:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:43,369 INFO L471 AbstractCegarLoop]: Abstraction has 166825 states and 203917 transitions. [2024-12-02 15:56:43,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.702702702702703) internal successors, (285), 37 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:56:43,370 INFO L276 IsEmpty]: Start isEmpty. Operand 166825 states and 203917 transitions. [2024-12-02 15:56:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 15:56:43,379 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:43,379 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:43,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:56:43,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 15:56:43,580 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:43,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 674488917, now seen corresponding path program 1 times [2024-12-02 15:56:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067699029] [2024-12-02 15:56:43,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:56:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:56:47,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067699029] [2024-12-02 15:56:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067699029] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:56:47,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563437472] [2024-12-02 15:56:47,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:47,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:56:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:56:47,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:56:47,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3d09e8a-2381-4c5d-b508-66961ce97103/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:56:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:47,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 15:56:47,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:51,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:56:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:56:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563437472] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:56:54,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:56:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 17] total 53 [2024-12-02 15:56:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058342316] [2024-12-02 15:56:54,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:56:54,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:56:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:54,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:56:54,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2575, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:56:54,682 INFO L87 Difference]: Start difference. First operand 166825 states and 203917 transitions. Second operand has 53 states, 53 states have (on average 5.679245283018868) internal successors, (301), 53 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)