./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.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_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/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_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/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_9dd367f7-8609-4ba6-a63f-d901f88ff989/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 fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:55:59,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:55:59,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:55:59,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:55:59,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:55:59,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:55:59,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:55:59,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:55:59,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:55:59,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:55:59,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:55:59,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:55:59,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:55:59,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:55:59,933 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:55:59,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:55:59,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:55:59,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:55:59,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:55:59,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:55:59,935 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_9dd367f7-8609-4ba6-a63f-d901f88ff989/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 -> fe2b0deb169362c7d64c9df76766c9af54619e5f9a01cab4bf1bef7672f8f279 [2024-12-02 07:56:00,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:56:00,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:56:00,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:56:00,170 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:56:00,170 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:56:00,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2024-12-02 07:56:02,779 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/data/b338f0a87/74746ac9f7904d1c95e5893523c820a4/FLAGb6d78514f [2024-12-02 07:56:03,287 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:56:03,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/sv-benchmarks/c/eca-rers2012/Problem19_label59.c [2024-12-02 07:56:03,326 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/data/b338f0a87/74746ac9f7904d1c95e5893523c820a4/FLAGb6d78514f [2024-12-02 07:56:03,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/data/b338f0a87/74746ac9f7904d1c95e5893523c820a4 [2024-12-02 07:56:03,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:56:03,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:56:03,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:03,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:56:03,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:56:03,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:03" (1/1) ... [2024-12-02 07:56:03,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a6e949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:03, skipping insertion in model container [2024-12-02 07:56:03,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:03" (1/1) ... [2024-12-02 07:56:03,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:56:03,735 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_9dd367f7-8609-4ba6-a63f-d901f88ff989/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2024-12-02 07:56:04,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:04,794 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:56:04,807 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_9dd367f7-8609-4ba6-a63f-d901f88ff989/sv-benchmarks/c/eca-rers2012/Problem19_label59.c[3603,3616] [2024-12-02 07:56:05,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:05,550 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:56:05,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05 WrapperNode [2024-12-02 07:56:05,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:05,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:05,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:56:05,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:56:05,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:05,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:06,445 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-12-02 07:56:06,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:06,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:56:06,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:56:06,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:56:06,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:06,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:06,555 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:06,844 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 07:56:06,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:06,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,081 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:56:07,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:56:07,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:56:07,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:56:07,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (1/1) ... [2024-12-02 07:56:07,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:56:07,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:07,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:56:07,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:56:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:56:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:56:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:56:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:56:07,378 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:56:07,379 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:56:14,716 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-12-02 07:56:14,716 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:56:14,754 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:56:14,755 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:56:14,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:14 BoogieIcfgContainer [2024-12-02 07:56:14,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:56:14,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:56:14,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:56:14,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:56:14,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:56:03" (1/3) ... [2024-12-02 07:56:14,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4249f64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:14, skipping insertion in model container [2024-12-02 07:56:14,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:05" (2/3) ... [2024-12-02 07:56:14,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4249f64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:14, skipping insertion in model container [2024-12-02 07:56:14,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:14" (3/3) ... [2024-12-02 07:56:14,764 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label59.c [2024-12-02 07:56:14,775 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:56:14,777 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label59.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:56:14,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:14,864 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;@46ca9bc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:14,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:56:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 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 07:56:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 07:56:14,876 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:14,876 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] [2024-12-02 07:56:14,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:14,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1225036359, now seen corresponding path program 1 times [2024-12-02 07:56:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:14,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290397846] [2024-12-02 07:56:14,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:14,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:15,125 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 07:56:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290397846] [2024-12-02 07:56:15,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290397846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:15,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:15,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:15,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729781411] [2024-12-02 07:56:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:15,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:15,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:15,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:15,159 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 07:56:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:21,872 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2024-12-02 07:56:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-12-02 07:56:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:21,889 INFO L225 Difference]: With dead ends: 4975 [2024-12-02 07:56:21,889 INFO L226 Difference]: Without dead ends: 3163 [2024-12-02 07:56:21,893 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 07:56:21,895 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 1521 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:21,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 07:56:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2024-12-02 07:56:21,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2024-12-02 07:56:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 0 states have call successors, (0), 0 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 07:56:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2024-12-02 07:56:22,015 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 25 [2024-12-02 07:56:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:22,016 INFO L471 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2024-12-02 07:56:22,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 07:56:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2024-12-02 07:56:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-02 07:56:22,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:22,019 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:22,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:56:22,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:22,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1658791217, now seen corresponding path program 1 times [2024-12-02 07:56:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:22,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391788214] [2024-12-02 07:56:22,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:22,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391788214] [2024-12-02 07:56:22,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391788214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:22,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:22,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:22,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197050033] [2024-12-02 07:56:22,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:22,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:22,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:22,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:22,214 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 07:56:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:28,455 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2024-12-02 07:56:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-12-02 07:56:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:28,471 INFO L225 Difference]: With dead ends: 9055 [2024-12-02 07:56:28,471 INFO L226 Difference]: Without dead ends: 5934 [2024-12-02 07:56:28,475 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 07:56:28,476 INFO L435 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:28,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 07:56:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2024-12-02 07:56:28,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2024-12-02 07:56:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 0 states have call successors, (0), 0 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 07:56:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2024-12-02 07:56:28,557 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 96 [2024-12-02 07:56:28,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:28,558 INFO L471 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2024-12-02 07:56:28,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 07:56:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2024-12-02 07:56:28,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 07:56:28,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:28,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:28,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:56:28,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:28,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -698240399, now seen corresponding path program 1 times [2024-12-02 07:56:28,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:28,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836969913] [2024-12-02 07:56:28,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:28,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:28,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836969913] [2024-12-02 07:56:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836969913] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:28,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846796507] [2024-12-02 07:56:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:28,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:56:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:28,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:56:28,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:56:28,870 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 07:56:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:37,361 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2024-12-02 07:56:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:56:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 07:56:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:37,385 INFO L225 Difference]: With dead ends: 18680 [2024-12-02 07:56:37,385 INFO L226 Difference]: Without dead ends: 12772 [2024-12-02 07:56:37,390 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 07:56:37,391 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 4367 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 9541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2200 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:37,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4367 Valid, 1281 Invalid, 9541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2200 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-12-02 07:56:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2024-12-02 07:56:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2024-12-02 07:56:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3468652037617554) internal successors, (17186), 12760 states have internal predecessors, (17186), 0 states have call successors, (0), 0 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 07:56:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17186 transitions. [2024-12-02 07:56:37,549 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17186 transitions. Word has length 108 [2024-12-02 07:56:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:37,549 INFO L471 AbstractCegarLoop]: Abstraction has 12761 states and 17186 transitions. [2024-12-02 07:56:37,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 07:56:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17186 transitions. [2024-12-02 07:56:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-12-02 07:56:37,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:37,553 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:37,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:56:37,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:37,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash -519306661, now seen corresponding path program 1 times [2024-12-02 07:56:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423906957] [2024-12-02 07:56:37,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:37,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:37,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423906957] [2024-12-02 07:56:37,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423906957] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:37,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:37,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006410043] [2024-12-02 07:56:37,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:37,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:37,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:37,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:37,789 INFO L87 Difference]: Start difference. First operand 12761 states and 17186 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:43,298 INFO L93 Difference]: Finished difference Result 29634 states and 40392 transitions. [2024-12-02 07:56:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:43,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-12-02 07:56:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:43,334 INFO L225 Difference]: With dead ends: 29634 [2024-12-02 07:56:43,335 INFO L226 Difference]: Without dead ends: 18241 [2024-12-02 07:56:43,342 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 07:56:43,343 INFO L435 NwaCegarLoop]: 3079 mSDtfsCounter, 1466 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3739 mSolverCounterSat, 1676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 3739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:43,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3270 Invalid, 5415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1676 Valid, 3739 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 07:56:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18241 states. [2024-12-02 07:56:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18241 to 18237. [2024-12-02 07:56:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18237 states, 18236 states have (on average 1.2679315639394604) internal successors, (23122), 18236 states have internal predecessors, (23122), 0 states have call successors, (0), 0 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 07:56:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18237 states to 18237 states and 23122 transitions. [2024-12-02 07:56:43,625 INFO L78 Accepts]: Start accepts. Automaton has 18237 states and 23122 transitions. Word has length 232 [2024-12-02 07:56:43,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:43,626 INFO L471 AbstractCegarLoop]: Abstraction has 18237 states and 23122 transitions. [2024-12-02 07:56:43,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:56:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18237 states and 23122 transitions. [2024-12-02 07:56:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-12-02 07:56:43,633 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:43,633 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:43,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:56:43,633 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:43,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:43,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1757817294, now seen corresponding path program 1 times [2024-12-02 07:56:43,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:43,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152114810] [2024-12-02 07:56:43,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:56:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152114810] [2024-12-02 07:56:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152114810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:44,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:44,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725422571] [2024-12-02 07:56:44,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:44,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:56:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:44,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:56:44,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:56:44,764 INFO L87 Difference]: Start difference. First operand 18237 states and 23122 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 07:56:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:53,301 INFO L93 Difference]: Finished difference Result 44706 states and 55895 transitions. [2024-12-02 07:56:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:56:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 354 [2024-12-02 07:56:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:53,331 INFO L225 Difference]: With dead ends: 44706 [2024-12-02 07:56:53,331 INFO L226 Difference]: Without dead ends: 27836 [2024-12-02 07:56:53,341 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 07:56:53,341 INFO L435 NwaCegarLoop]: 1742 mSDtfsCounter, 3756 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9336 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 9761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 9336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:53,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2094 Invalid, 9761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 9336 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-12-02 07:56:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27836 states. [2024-12-02 07:56:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27836 to 27813. [2024-12-02 07:56:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.201891269955415) internal successors, (33427), 27812 states have internal predecessors, (33427), 0 states have call successors, (0), 0 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 07:56:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33427 transitions. [2024-12-02 07:56:53,677 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33427 transitions. Word has length 354 [2024-12-02 07:56:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:53,678 INFO L471 AbstractCegarLoop]: Abstraction has 27813 states and 33427 transitions. [2024-12-02 07:56:53,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 07:56:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33427 transitions. [2024-12-02 07:56:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-12-02 07:56:53,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:53,684 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:53,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:56:53,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:53,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -278228072, now seen corresponding path program 1 times [2024-12-02 07:56:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400814199] [2024-12-02 07:56:53,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:54,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400814199] [2024-12-02 07:56:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400814199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:54,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:54,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864672096] [2024-12-02 07:56:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:56:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:54,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:56:54,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:56:54,554 INFO L87 Difference]: Start difference. First operand 27813 states and 33427 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 07:57:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:00,866 INFO L93 Difference]: Finished difference Result 52925 states and 64135 transitions. [2024-12-02 07:57:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:57:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 382 [2024-12-02 07:57:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:00,915 INFO L225 Difference]: With dead ends: 52925 [2024-12-02 07:57:00,915 INFO L226 Difference]: Without dead ends: 27813 [2024-12-02 07:57:00,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:57:00,928 INFO L435 NwaCegarLoop]: 1769 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7313 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 7321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:00,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2111 Invalid, 7321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7313 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 07:57:00,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27813 states. [2024-12-02 07:57:01,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27813 to 27813. [2024-12-02 07:57:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27813 states, 27812 states have (on average 1.2014238458219473) internal successors, (33414), 27812 states have internal predecessors, (33414), 0 states have call successors, (0), 0 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 07:57:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27813 states to 27813 states and 33414 transitions. [2024-12-02 07:57:01,233 INFO L78 Accepts]: Start accepts. Automaton has 27813 states and 33414 transitions. Word has length 382 [2024-12-02 07:57:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:01,233 INFO L471 AbstractCegarLoop]: Abstraction has 27813 states and 33414 transitions. [2024-12-02 07:57:01,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 07:57:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27813 states and 33414 transitions. [2024-12-02 07:57:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-12-02 07:57:01,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:01,243 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:01,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:57:01,243 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:01,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash 325902696, now seen corresponding path program 1 times [2024-12-02 07:57:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:01,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629956377] [2024-12-02 07:57:01,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:57:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629956377] [2024-12-02 07:57:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629956377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:01,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:57:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335378516] [2024-12-02 07:57:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:01,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:01,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:01,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:01,932 INFO L87 Difference]: Start difference. First operand 27813 states and 33414 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 07:57:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:08,082 INFO L93 Difference]: Finished difference Result 61182 states and 76059 transitions. [2024-12-02 07:57:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 512 [2024-12-02 07:57:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:08,110 INFO L225 Difference]: With dead ends: 61182 [2024-12-02 07:57:08,111 INFO L226 Difference]: Without dead ends: 36101 [2024-12-02 07:57:08,121 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 07:57:08,122 INFO L435 NwaCegarLoop]: 1925 mSDtfsCounter, 1695 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5049 mSolverCounterSat, 954 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 954 IncrementalHoareTripleChecker+Valid, 5049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:08,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 2074 Invalid, 6003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [954 Valid, 5049 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-12-02 07:57:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36101 states. [2024-12-02 07:57:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36101 to 36082. [2024-12-02 07:57:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36082 states, 36081 states have (on average 1.2354424766497603) internal successors, (44576), 36081 states have internal predecessors, (44576), 0 states have call successors, (0), 0 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 07:57:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36082 states to 36082 states and 44576 transitions. [2024-12-02 07:57:08,406 INFO L78 Accepts]: Start accepts. Automaton has 36082 states and 44576 transitions. Word has length 512 [2024-12-02 07:57:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:08,407 INFO L471 AbstractCegarLoop]: Abstraction has 36082 states and 44576 transitions. [2024-12-02 07:57:08,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 07:57:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 36082 states and 44576 transitions. [2024-12-02 07:57:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2024-12-02 07:57:08,410 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:08,411 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:08,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:57:08,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:08,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash 942540356, now seen corresponding path program 1 times [2024-12-02 07:57:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:08,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68878061] [2024-12-02 07:57:08,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:08,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 07:57:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68878061] [2024-12-02 07:57:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68878061] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:08,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:08,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:57:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267088272] [2024-12-02 07:57:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:08,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:08,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:08,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:08,832 INFO L87 Difference]: Start difference. First operand 36082 states and 44576 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 07:57:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:14,619 INFO L93 Difference]: Finished difference Result 77634 states and 97709 transitions. [2024-12-02 07:57:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 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 590 [2024-12-02 07:57:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:14,652 INFO L225 Difference]: With dead ends: 77634 [2024-12-02 07:57:14,652 INFO L226 Difference]: Without dead ends: 44284 [2024-12-02 07:57:14,671 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 07:57:14,672 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 1380 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 2094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 6020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2094 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:14,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 795 Invalid, 6020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2094 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 07:57:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44284 states. [2024-12-02 07:57:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44284 to 44272. [2024-12-02 07:57:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44272 states, 44271 states have (on average 1.2296988999570826) internal successors, (54440), 44271 states have internal predecessors, (54440), 0 states have call successors, (0), 0 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 07:57:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 54440 transitions. [2024-12-02 07:57:15,053 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 54440 transitions. Word has length 590 [2024-12-02 07:57:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:15,054 INFO L471 AbstractCegarLoop]: Abstraction has 44272 states and 54440 transitions. [2024-12-02 07:57:15,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 2 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 07:57:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 54440 transitions. [2024-12-02 07:57:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-12-02 07:57:15,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:15,058 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:57:15,058 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:15,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 192399333, now seen corresponding path program 1 times [2024-12-02 07:57:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193704291] [2024-12-02 07:57:15,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-12-02 07:57:15,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193704291] [2024-12-02 07:57:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193704291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:15,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:15,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:57:15,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410283113] [2024-12-02 07:57:15,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:15,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:15,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:15,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:15,617 INFO L87 Difference]: Start difference. First operand 44272 states and 54440 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 07:57:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:22,851 INFO L93 Difference]: Finished difference Result 127006 states and 157393 transitions. [2024-12-02 07:57:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 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 631 [2024-12-02 07:57:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:22,928 INFO L225 Difference]: With dead ends: 127006 [2024-12-02 07:57:22,928 INFO L226 Difference]: Without dead ends: 85466 [2024-12-02 07:57:22,949 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 07:57:22,950 INFO L435 NwaCegarLoop]: 706 mSDtfsCounter, 2109 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2109 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:22,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2109 Valid, 974 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-12-02 07:57:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85466 states. [2024-12-02 07:57:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85466 to 85462. [2024-12-02 07:57:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85462 states, 85461 states have (on average 1.2110904389136565) internal successors, (103501), 85461 states have internal predecessors, (103501), 0 states have call successors, (0), 0 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 07:57:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85462 states to 85462 states and 103501 transitions. [2024-12-02 07:57:23,674 INFO L78 Accepts]: Start accepts. Automaton has 85462 states and 103501 transitions. Word has length 631 [2024-12-02 07:57:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:23,675 INFO L471 AbstractCegarLoop]: Abstraction has 85462 states and 103501 transitions. [2024-12-02 07:57:23,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 2 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 07:57:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 85462 states and 103501 transitions. [2024-12-02 07:57:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2024-12-02 07:57:23,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:23,678 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:23,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:57:23,679 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:23,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 207909631, now seen corresponding path program 1 times [2024-12-02 07:57:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127947117] [2024-12-02 07:57:23,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:24,853 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 45 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 07:57:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127947117] [2024-12-02 07:57:24,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127947117] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:57:24,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030191579] [2024-12-02 07:57:24,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:24,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:57:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:57:24,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:57:24,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:57:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:25,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:57:25,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:57:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:57:25,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:57:25,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030191579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:25,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:57:25,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 07:57:25,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252166144] [2024-12-02 07:57:25,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:25,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:25,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:25,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:57:25,396 INFO L87 Difference]: Start difference. First operand 85462 states and 103501 transitions. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 07:57:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:31,904 INFO L93 Difference]: Finished difference Result 233691 states and 286262 transitions. [2024-12-02 07:57:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 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 634 [2024-12-02 07:57:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:32,032 INFO L225 Difference]: With dead ends: 233691 [2024-12-02 07:57:32,032 INFO L226 Difference]: Without dead ends: 148229 [2024-12-02 07:57:32,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:57:32,066 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 1526 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 5629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:32,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1688 Invalid, 5629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-12-02 07:57:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148229 states. [2024-12-02 07:57:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148229 to 140035. [2024-12-02 07:57:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140035 states, 140034 states have (on average 1.1517702843595128) internal successors, (161287), 140034 states have internal predecessors, (161287), 0 states have call successors, (0), 0 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 07:57:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140035 states to 140035 states and 161287 transitions. [2024-12-02 07:57:33,252 INFO L78 Accepts]: Start accepts. Automaton has 140035 states and 161287 transitions. Word has length 634 [2024-12-02 07:57:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:33,252 INFO L471 AbstractCegarLoop]: Abstraction has 140035 states and 161287 transitions. [2024-12-02 07:57:33,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 07:57:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 140035 states and 161287 transitions. [2024-12-02 07:57:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2024-12-02 07:57:33,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:33,258 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:33,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:57:33,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:57:33,459 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:33,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2001287119, now seen corresponding path program 1 times [2024-12-02 07:57:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389893518] [2024-12-02 07:57:33,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-12-02 07:57:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389893518] [2024-12-02 07:57:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389893518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:33,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:57:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379722332] [2024-12-02 07:57:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:33,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:33,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:33,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:33,957 INFO L87 Difference]: Start difference. First operand 140035 states and 161287 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 07:57:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:40,487 INFO L93 Difference]: Finished difference Result 277350 states and 319859 transitions. [2024-12-02 07:57:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:40,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 724 [2024-12-02 07:57:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:40,622 INFO L225 Difference]: With dead ends: 277350 [2024-12-02 07:57:40,623 INFO L226 Difference]: Without dead ends: 140047 [2024-12-02 07:57:40,663 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 07:57:40,663 INFO L435 NwaCegarLoop]: 2856 mSDtfsCounter, 1421 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4413 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 4413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:40,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 3041 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 4413 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-12-02 07:57:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140047 states. [2024-12-02 07:57:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140047 to 140033. [2024-12-02 07:57:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140033 states, 140032 states have (on average 1.1178801988117002) internal successors, (156539), 140032 states have internal predecessors, (156539), 0 states have call successors, (0), 0 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 07:57:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140033 states to 140033 states and 156539 transitions. [2024-12-02 07:57:42,315 INFO L78 Accepts]: Start accepts. Automaton has 140033 states and 156539 transitions. Word has length 724 [2024-12-02 07:57:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:42,316 INFO L471 AbstractCegarLoop]: Abstraction has 140033 states and 156539 transitions. [2024-12-02 07:57:42,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 07:57:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 140033 states and 156539 transitions. [2024-12-02 07:57:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2024-12-02 07:57:42,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:42,325 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:42,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:57:42,325 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:42,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1259584170, now seen corresponding path program 1 times [2024-12-02 07:57:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268158848] [2024-12-02 07:57:42,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:57:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268158848] [2024-12-02 07:57:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268158848] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:57:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150655842] [2024-12-02 07:57:44,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:57:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:57:44,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:57:44,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:57:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:44,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:57:44,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:57:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-12-02 07:57:44,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:57:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150655842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:44,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:57:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 07:57:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027992824] [2024-12-02 07:57:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:44,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:44,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:44,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:57:44,745 INFO L87 Difference]: Start difference. First operand 140033 states and 156539 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 07:57:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:50,694 INFO L93 Difference]: Finished difference Result 316922 states and 355599 transitions. [2024-12-02 07:57:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:57:50,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 731 [2024-12-02 07:57:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:50,846 INFO L225 Difference]: With dead ends: 316922 [2024-12-02 07:57:50,846 INFO L226 Difference]: Without dead ends: 174156 [2024-12-02 07:57:50,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:57:50,902 INFO L435 NwaCegarLoop]: 2486 mSDtfsCounter, 1688 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 5463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:50,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2577 Invalid, 5463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 07:57:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174156 states. [2024-12-02 07:57:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174156 to 167317. [2024-12-02 07:57:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167317 states, 167316 states have (on average 1.1028771904659447) internal successors, (184529), 167316 states have internal predecessors, (184529), 0 states have call successors, (0), 0 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 07:57:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167317 states to 167317 states and 184529 transitions. [2024-12-02 07:57:52,346 INFO L78 Accepts]: Start accepts. Automaton has 167317 states and 184529 transitions. Word has length 731 [2024-12-02 07:57:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:52,347 INFO L471 AbstractCegarLoop]: Abstraction has 167317 states and 184529 transitions. [2024-12-02 07:57:52,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 07:57:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 167317 states and 184529 transitions. [2024-12-02 07:57:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2024-12-02 07:57:52,353 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:52,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:52,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:57:52,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:57:52,554 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:52,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2103569992, now seen corresponding path program 1 times [2024-12-02 07:57:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:52,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048571905] [2024-12-02 07:57:52,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-12-02 07:57:53,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048571905] [2024-12-02 07:57:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048571905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:53,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:53,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:57:53,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827428910] [2024-12-02 07:57:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:53,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:53,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:53,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:53,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:53,280 INFO L87 Difference]: Start difference. First operand 167317 states and 184529 transitions. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 07:58:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:00,686 INFO L93 Difference]: Finished difference Result 402975 states and 448944 transitions. [2024-12-02 07:58:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:58:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 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 897 [2024-12-02 07:58:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:00,891 INFO L225 Difference]: With dead ends: 402975 [2024-12-02 07:58:00,891 INFO L226 Difference]: Without dead ends: 237023 [2024-12-02 07:58:00,953 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 07:58:00,954 INFO L435 NwaCegarLoop]: 2997 mSDtfsCounter, 1396 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 5870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:00,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 3159 Invalid, 5870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 4926 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 07:58:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237023 states. [2024-12-02 07:58:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237023 to 236946. [2024-12-02 07:58:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236946 states, 236945 states have (on average 1.0891810335731922) internal successors, (258076), 236945 states have internal predecessors, (258076), 0 states have call successors, (0), 0 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 07:58:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236946 states to 236946 states and 258076 transitions. [2024-12-02 07:58:03,042 INFO L78 Accepts]: Start accepts. Automaton has 236946 states and 258076 transitions. Word has length 897 [2024-12-02 07:58:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:03,042 INFO L471 AbstractCegarLoop]: Abstraction has 236946 states and 258076 transitions. [2024-12-02 07:58:03,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 07:58:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 236946 states and 258076 transitions. [2024-12-02 07:58:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2024-12-02 07:58:03,049 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:03,049 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:58:03,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:58:03,049 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:03,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 869003777, now seen corresponding path program 1 times [2024-12-02 07:58:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679883747] [2024-12-02 07:58:03,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-12-02 07:58:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679883747] [2024-12-02 07:58:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679883747] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:58:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143936430] [2024-12-02 07:58:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:03,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:58:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:03,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:58:03,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:58:03,769 INFO L87 Difference]: Start difference. First operand 236946 states and 258076 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 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 07:58:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:16,635 INFO L93 Difference]: Finished difference Result 714336 states and 783605 transitions. [2024-12-02 07:58:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:58:16,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 931 [2024-12-02 07:58:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:17,122 INFO L225 Difference]: With dead ends: 714336 [2024-12-02 07:58:17,122 INFO L226 Difference]: Without dead ends: 480122 [2024-12-02 07:58:17,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:58:17,175 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 3229 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 8987 mSolverCounterSat, 2582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3229 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 11569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2582 IncrementalHoareTripleChecker+Valid, 8987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:17,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3229 Valid, 1236 Invalid, 11569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2582 Valid, 8987 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-12-02 07:58:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480122 states. [2024-12-02 07:58:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480122 to 471811. [2024-12-02 07:58:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471811 states, 471810 states have (on average 1.0808545812933172) internal successors, (509958), 471810 states have internal predecessors, (509958), 0 states have call successors, (0), 0 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 07:58:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471811 states to 471811 states and 509958 transitions. [2024-12-02 07:58:22,223 INFO L78 Accepts]: Start accepts. Automaton has 471811 states and 509958 transitions. Word has length 931 [2024-12-02 07:58:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:22,223 INFO L471 AbstractCegarLoop]: Abstraction has 471811 states and 509958 transitions. [2024-12-02 07:58:22,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 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 07:58:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 471811 states and 509958 transitions. [2024-12-02 07:58:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2024-12-02 07:58:22,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:22,412 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:58:22,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:58:22,413 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:22,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -508890172, now seen corresponding path program 1 times [2024-12-02 07:58:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191320736] [2024-12-02 07:58:22,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 393 proven. 66 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-12-02 07:58:23,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191320736] [2024-12-02 07:58:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191320736] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:58:23,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281364864] [2024-12-02 07:58:23,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:58:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:58:23,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:58:23,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:58:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:24,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:58:24,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:58:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2024-12-02 07:58:24,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:58:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281364864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:24,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:58:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 07:58:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242455852] [2024-12-02 07:58:24,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:24,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:58:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:24,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:58:24,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:58:24,414 INFO L87 Difference]: Start difference. First operand 471811 states and 509958 transitions. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 07:58:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:33,000 INFO L93 Difference]: Finished difference Result 1047494 states and 1141364 transitions. [2024-12-02 07:58:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:58:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 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 1026 [2024-12-02 07:58:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:33,898 INFO L225 Difference]: With dead ends: 1047494 [2024-12-02 07:58:33,898 INFO L226 Difference]: Without dead ends: 578415 [2024-12-02 07:58:34,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:58:34,009 INFO L435 NwaCegarLoop]: 2843 mSDtfsCounter, 1390 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 1658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1658 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:34,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 3007 Invalid, 5667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1658 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-12-02 07:58:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578415 states. [2024-12-02 07:58:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578415 to 568743. [2024-12-02 07:58:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568743 states, 568742 states have (on average 1.0799624434277757) internal successors, (614220), 568742 states have internal predecessors, (614220), 0 states have call successors, (0), 0 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 07:58:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568743 states to 568743 states and 614220 transitions. [2024-12-02 07:58:40,448 INFO L78 Accepts]: Start accepts. Automaton has 568743 states and 614220 transitions. Word has length 1026 [2024-12-02 07:58:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:40,449 INFO L471 AbstractCegarLoop]: Abstraction has 568743 states and 614220 transitions. [2024-12-02 07:58:40,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 07:58:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 568743 states and 614220 transitions. [2024-12-02 07:58:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2024-12-02 07:58:40,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:40,464 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:40,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:58:40,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 07:58:40,664 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:40,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash 477216125, now seen corresponding path program 1 times [2024-12-02 07:58:40,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496650490] [2024-12-02 07:58:40,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-12-02 07:58:41,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:41,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496650490] [2024-12-02 07:58:41,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496650490] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:41,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:41,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:58:41,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016508006] [2024-12-02 07:58:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:41,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:58:41,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:41,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:58:41,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:58:41,620 INFO L87 Difference]: Start difference. First operand 568743 states and 614220 transitions. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 07:58:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:49,462 INFO L93 Difference]: Finished difference Result 1137502 states and 1228473 transitions. [2024-12-02 07:58:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:58:49,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 1047 [2024-12-02 07:58:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:50,454 INFO L225 Difference]: With dead ends: 1137502 [2024-12-02 07:58:50,454 INFO L226 Difference]: Without dead ends: 568760 [2024-12-02 07:58:50,596 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 07:58:50,596 INFO L435 NwaCegarLoop]: 2811 mSDtfsCounter, 1306 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4264 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 4264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:50,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2987 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 4264 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 07:58:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568760 states. [2024-12-02 07:58:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568760 to 568738. [2024-12-02 07:58:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568738 states, 568737 states have (on average 1.0649790676534145) internal successors, (605693), 568737 states have internal predecessors, (605693), 0 states have call successors, (0), 0 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 07:58:57,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568738 states to 568738 states and 605693 transitions. [2024-12-02 07:58:57,309 INFO L78 Accepts]: Start accepts. Automaton has 568738 states and 605693 transitions. Word has length 1047 [2024-12-02 07:58:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:57,310 INFO L471 AbstractCegarLoop]: Abstraction has 568738 states and 605693 transitions. [2024-12-02 07:58:57,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 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 07:58:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 568738 states and 605693 transitions. [2024-12-02 07:58:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2024-12-02 07:58:57,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:57,321 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:57,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:58:57,321 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:57,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash -349079334, now seen corresponding path program 1 times [2024-12-02 07:58:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:57,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346758599] [2024-12-02 07:58:57,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:57,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2024-12-02 07:58:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:57,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346758599] [2024-12-02 07:58:57,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346758599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:57,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:57,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:58:57,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394293045] [2024-12-02 07:58:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:57,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:58:57,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:57,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:58:57,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:58:57,788 INFO L87 Difference]: Start difference. First operand 568738 states and 605693 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 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 07:59:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:06,786 INFO L93 Difference]: Finished difference Result 1306728 states and 1398112 transitions. [2024-12-02 07:59:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:59:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 1113 [2024-12-02 07:59:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:07,917 INFO L225 Difference]: With dead ends: 1306728 [2024-12-02 07:59:07,917 INFO L226 Difference]: Without dead ends: 740722 [2024-12-02 07:59:08,070 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 07:59:08,071 INFO L435 NwaCegarLoop]: 2178 mSDtfsCounter, 1552 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:08,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 2361 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 07:59:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740722 states. [2024-12-02 07:59:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740722 to 686114. [2024-12-02 07:59:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686114 states, 686113 states have (on average 1.0665823268178858) internal successors, (731796), 686113 states have internal predecessors, (731796), 0 states have call successors, (0), 0 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 07:59:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686114 states to 686114 states and 731796 transitions. [2024-12-02 07:59:15,538 INFO L78 Accepts]: Start accepts. Automaton has 686114 states and 731796 transitions. Word has length 1113 [2024-12-02 07:59:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:15,539 INFO L471 AbstractCegarLoop]: Abstraction has 686114 states and 731796 transitions. [2024-12-02 07:59:15,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 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 07:59:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 686114 states and 731796 transitions. [2024-12-02 07:59:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2024-12-02 07:59:15,552 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:15,553 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:15,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:59:15,553 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:15,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936258, now seen corresponding path program 1 times [2024-12-02 07:59:15,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:15,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760335111] [2024-12-02 07:59:15,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 448 proven. 622 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-12-02 07:59:17,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760335111] [2024-12-02 07:59:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760335111] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:59:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917300497] [2024-12-02 07:59:17,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:17,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:59:17,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:59:17,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:59:17,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:59:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:18,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:59:18,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:59:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-12-02 07:59:18,474 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:59:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917300497] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:59:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 07:59:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960396434] [2024-12-02 07:59:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:18,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:59:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:18,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:59:18,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:59:18,476 INFO L87 Difference]: Start difference. First operand 686114 states and 731796 transitions. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 07:59:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:28,171 INFO L93 Difference]: Finished difference Result 1451512 states and 1553634 transitions. [2024-12-02 07:59:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:59:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 1142 [2024-12-02 07:59:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:29,081 INFO L225 Difference]: With dead ends: 1451512 [2024-12-02 07:59:29,081 INFO L226 Difference]: Without dead ends: 768130 [2024-12-02 07:59:29,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:59:29,279 INFO L435 NwaCegarLoop]: 2767 mSDtfsCounter, 1350 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 5641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:29,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2935 Invalid, 5641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 07:59:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768130 states. [2024-12-02 07:59:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768130 to 761184. [2024-12-02 07:59:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761184 states, 761183 states have (on average 1.0613111433124491) internal successors, (807852), 761183 states have internal predecessors, (807852), 0 states have call successors, (0), 0 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 07:59:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761184 states to 761184 states and 807852 transitions. [2024-12-02 07:59:37,372 INFO L78 Accepts]: Start accepts. Automaton has 761184 states and 807852 transitions. Word has length 1142 [2024-12-02 07:59:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:37,373 INFO L471 AbstractCegarLoop]: Abstraction has 761184 states and 807852 transitions. [2024-12-02 07:59:37,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 07:59:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 761184 states and 807852 transitions. [2024-12-02 07:59:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2024-12-02 07:59:37,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:37,386 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:59:37,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:59:37,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dd367f7-8609-4ba6-a63f-d901f88ff989/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 07:59:37,587 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:37,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1268379762, now seen corresponding path program 1 times [2024-12-02 07:59:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462363802] [2024-12-02 07:59:37,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:37,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 835 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2024-12-02 07:59:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:38,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462363802] [2024-12-02 07:59:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462363802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:38,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:38,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:59:38,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483726977] [2024-12-02 07:59:38,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:38,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:59:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:38,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:59:38,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:59:38,410 INFO L87 Difference]: Start difference. First operand 761184 states and 807852 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 07:59:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:48,801 INFO L93 Difference]: Finished difference Result 1706635 states and 1811733 transitions. [2024-12-02 07:59:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:59:48,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1278 [2024-12-02 07:59:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:49,955 INFO L225 Difference]: With dead ends: 1706635 [2024-12-02 07:59:49,955 INFO L226 Difference]: Without dead ends: 948183