./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label30.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_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83ffce59e410a390585ab5d6b9a35243cf64c2ed9c21e3f0297164e30fb05d36 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:46:46,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:46:46,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:46:46,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:46:46,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:46:46,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:46:46,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:46:46,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:46:46,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:46:46,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:46:46,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:46:46,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:46:46,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:46:46,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:46:46,408 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:46:46,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:46:46,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:46:46,410 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:46:46,410 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:46,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:46,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:46,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:46:46,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:46:46,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:46:46,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:46:46,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:46:46,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:46:46,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:46:46,413 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_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83ffce59e410a390585ab5d6b9a35243cf64c2ed9c21e3f0297164e30fb05d36 [2024-11-28 04:46:46,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:46:46,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:46:46,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:46:46,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:46:46,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:46:46,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem19_label30.c [2024-11-28 04:46:50,166 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/data/8218c2867/0b984990434b410b9b637a6dd05f8b42/FLAG34b43d3bd [2024-11-28 04:46:51,154 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:46:51,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/sv-benchmarks/c/eca-rers2012/Problem19_label30.c [2024-11-28 04:46:51,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/data/8218c2867/0b984990434b410b9b637a6dd05f8b42/FLAG34b43d3bd [2024-11-28 04:46:51,238 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/data/8218c2867/0b984990434b410b9b637a6dd05f8b42 [2024-11-28 04:46:51,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:46:51,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:46:51,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:51,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:46:51,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:46:51,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:51" (1/1) ... [2024-11-28 04:46:51,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43668568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:51, skipping insertion in model container [2024-11-28 04:46:51,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:51" (1/1) ... [2024-11-28 04:46:51,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:46:51,972 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_7faeeaaf-4e26-4bbe-a725-82d631b65282/sv-benchmarks/c/eca-rers2012/Problem19_label30.c[6405,6418] [2024-11-28 04:46:53,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:53,892 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:46:53,920 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_7faeeaaf-4e26-4bbe-a725-82d631b65282/sv-benchmarks/c/eca-rers2012/Problem19_label30.c[6405,6418] [2024-11-28 04:46:55,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:55,182 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:46:55,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55 WrapperNode [2024-11-28 04:46:55,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:55,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:55,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:46:55,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:46:55,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:55,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:56,640 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-28 04:46:56,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:56,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:46:56,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:46:56,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:46:56,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:56,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,475 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:46:57,475 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,845 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:57,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:58,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:58,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:58,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:46:58,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:46:58,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:46:58,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:46:58,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (1/1) ... [2024-11-28 04:46:58,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:58,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:46:58,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:46:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:46:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:46:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:46:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:46:58,865 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:46:58,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:47:12,408 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-28 04:47:12,408 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:47:12,472 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:47:12,473 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:47:12,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:12 BoogieIcfgContainer [2024-11-28 04:47:12,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:47:12,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:47:12,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:47:12,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:47:12,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:46:51" (1/3) ... [2024-11-28 04:47:12,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40837a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:12, skipping insertion in model container [2024-11-28 04:47:12,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:55" (2/3) ... [2024-11-28 04:47:12,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40837a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:12, skipping insertion in model container [2024-11-28 04:47:12,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:12" (3/3) ... [2024-11-28 04:47:12,487 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem19_label30.c [2024-11-28 04:47:12,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:47:12,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label30.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:47:12,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:12,679 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;@7d15562f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:12,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:47:12,692 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) [2024-11-28 04:47:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:47:12,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:12,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:12,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:12,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 563919826, now seen corresponding path program 1 times [2024-11-28 04:47:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:12,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659739593] [2024-11-28 04:47:12,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:12,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:13,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:13,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659739593] [2024-11-28 04:47:13,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659739593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:13,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:13,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:47:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320034642] [2024-11-28 04:47:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:13,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:13,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:13,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:13,380 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 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:24,312 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2024-11-28 04:47:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-28 04:47:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:24,353 INFO L225 Difference]: With dead ends: 4957 [2024-11-28 04:47:24,353 INFO L226 Difference]: Without dead ends: 3129 [2024-11-28 04:47:24,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:24,365 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 1578 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:24,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-28 04:47:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-11-28 04:47:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2024-11-28 04:47:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2024-11-28 04:47:24,607 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 48 [2024-11-28 04:47:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:24,608 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2024-11-28 04:47:24,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2024-11-28 04:47:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:47:24,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:24,614 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:47:24,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:47:24,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:24,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash -370617832, now seen corresponding path program 1 times [2024-11-28 04:47:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:24,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124881540] [2024-11-28 04:47:24,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124881540] [2024-11-28 04:47:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124881540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:25,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:25,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586817107] [2024-11-28 04:47:25,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:25,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:25,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:25,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:25,579 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:39,838 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2024-11-28 04:47:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:39,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-11-28 04:47:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:39,871 INFO L225 Difference]: With dead ends: 10359 [2024-11-28 04:47:39,871 INFO L226 Difference]: Without dead ends: 7253 [2024-11-28 04:47:39,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:47:39,877 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 4323 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 11002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:39,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 1292 Invalid, 11002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1498 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2024-11-28 04:47:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2024-11-28 04:47:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2024-11-28 04:47:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4503311258278146) internal successors, (10512), 7248 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10512 transitions. [2024-11-28 04:47:40,065 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10512 transitions. Word has length 115 [2024-11-28 04:47:40,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:40,065 INFO L471 AbstractCegarLoop]: Abstraction has 7249 states and 10512 transitions. [2024-11-28 04:47:40,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:40,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10512 transitions. [2024-11-28 04:47:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-28 04:47:40,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:40,076 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:40,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:47:40,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:40,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 431376409, now seen corresponding path program 1 times [2024-11-28 04:47:40,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:40,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705561943] [2024-11-28 04:47:40,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 04:47:41,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:41,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705561943] [2024-11-28 04:47:41,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705561943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:41,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:41,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:41,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689489312] [2024-11-28 04:47:41,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:41,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:41,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:41,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:41,852 INFO L87 Difference]: Start difference. First operand 7249 states and 10512 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:54,427 INFO L93 Difference]: Finished difference Result 17269 states and 24867 transitions. [2024-11-28 04:47:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 322 [2024-11-28 04:47:54,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:54,471 INFO L225 Difference]: With dead ends: 17269 [2024-11-28 04:47:54,472 INFO L226 Difference]: Without dead ends: 11387 [2024-11-28 04:47:54,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:47:54,481 INFO L435 NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:54,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 9885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [430 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-28 04:47:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2024-11-28 04:47:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2024-11-28 04:47:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3286116487770543) internal successors, (15101), 11366 states have internal predecessors, (15101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15101 transitions. [2024-11-28 04:47:54,765 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15101 transitions. Word has length 322 [2024-11-28 04:47:54,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:54,766 INFO L471 AbstractCegarLoop]: Abstraction has 11367 states and 15101 transitions. [2024-11-28 04:47:54,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15101 transitions. [2024-11-28 04:47:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-28 04:47:54,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:54,776 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:54,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:47:54,776 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:54,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2068162815, now seen corresponding path program 1 times [2024-11-28 04:47:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:54,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009656112] [2024-11-28 04:47:54,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:54,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:47:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:56,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009656112] [2024-11-28 04:47:56,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009656112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:56,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:56,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335549090] [2024-11-28 04:47:56,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:56,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:56,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:56,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:56,056 INFO L87 Difference]: Start difference. First operand 11367 states and 15101 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:05,608 INFO L93 Difference]: Finished difference Result 20033 states and 27483 transitions. [2024-11-28 04:48:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:48:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 350 [2024-11-28 04:48:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:05,647 INFO L225 Difference]: With dead ends: 20033 [2024-11-28 04:48:05,647 INFO L226 Difference]: Without dead ends: 11367 [2024-11-28 04:48:05,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:48:05,659 INFO L435 NwaCegarLoop]: 1775 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:05,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-28 04:48:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2024-11-28 04:48:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2024-11-28 04:48:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3274678866795706) internal successors, (15088), 11366 states have internal predecessors, (15088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15088 transitions. [2024-11-28 04:48:05,917 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15088 transitions. Word has length 350 [2024-11-28 04:48:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:05,918 INFO L471 AbstractCegarLoop]: Abstraction has 11367 states and 15088 transitions. [2024-11-28 04:48:05,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15088 transitions. [2024-11-28 04:48:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-28 04:48:05,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:05,941 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:48:05,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:48:05,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:05,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash 950768836, now seen corresponding path program 1 times [2024-11-28 04:48:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870256560] [2024-11-28 04:48:05,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:07,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:07,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870256560] [2024-11-28 04:48:07,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870256560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:07,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42597882] [2024-11-28 04:48:07,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:07,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:07,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:07,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:48:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:07,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:48:07,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:08,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42597882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:08,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:08,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:48:08,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005351908] [2024-11-28 04:48:08,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:08,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:08,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:08,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:08,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:48:08,163 INFO L87 Difference]: Start difference. First operand 11367 states and 15088 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:16,520 INFO L93 Difference]: Finished difference Result 25557 states and 36131 transitions. [2024-11-28 04:48:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:16,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 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 535 [2024-11-28 04:48:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:16,563 INFO L225 Difference]: With dead ends: 25557 [2024-11-28 04:48:16,563 INFO L226 Difference]: Without dead ends: 16922 [2024-11-28 04:48:16,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:48:16,571 INFO L435 NwaCegarLoop]: 2758 mSDtfsCounter, 1473 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 1816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 5885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1816 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:16,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2935 Invalid, 5885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1816 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-28 04:48:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2024-11-28 04:48:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16874. [2024-11-28 04:48:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16874 states, 16873 states have (on average 1.2959758193563682) internal successors, (21867), 16873 states have internal predecessors, (21867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 21867 transitions. [2024-11-28 04:48:16,851 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 21867 transitions. Word has length 535 [2024-11-28 04:48:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 16874 states and 21867 transitions. [2024-11-28 04:48:16,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 21867 transitions. [2024-11-28 04:48:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2024-11-28 04:48:16,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:16,879 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:16,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:48:17,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:17,084 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:17,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1449165896, now seen corresponding path program 1 times [2024-11-28 04:48:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319191994] [2024-11-28 04:48:17,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 113 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:19,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319191994] [2024-11-28 04:48:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319191994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:19,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715030140] [2024-11-28 04:48:19,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:19,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:19,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:19,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:19,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:48:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:19,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:48:19,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:19,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715030140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 04:48:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741885479] [2024-11-28 04:48:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:19,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:19,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:19,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:48:19,629 INFO L87 Difference]: Start difference. First operand 16874 states and 21867 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:27,529 INFO L93 Difference]: Finished difference Result 43299 states and 57892 transitions. [2024-11-28 04:48:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 604 [2024-11-28 04:48:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:27,582 INFO L225 Difference]: With dead ends: 43299 [2024-11-28 04:48:27,582 INFO L226 Difference]: Without dead ends: 29157 [2024-11-28 04:48:27,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:48:27,596 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 2533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:27,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 816 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-28 04:48:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29157 states. [2024-11-28 04:48:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29157 to 29153. [2024-11-28 04:48:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29153 states, 29152 states have (on average 1.2976125137211856) internal successors, (37828), 29152 states have internal predecessors, (37828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29153 states to 29153 states and 37828 transitions. [2024-11-28 04:48:28,086 INFO L78 Accepts]: Start accepts. Automaton has 29153 states and 37828 transitions. Word has length 604 [2024-11-28 04:48:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:28,087 INFO L471 AbstractCegarLoop]: Abstraction has 29153 states and 37828 transitions. [2024-11-28 04:48:28,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 29153 states and 37828 transitions. [2024-11-28 04:48:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2024-11-28 04:48:28,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:28,110 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:28,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:48:28,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:48:28,311 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:28,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 641660654, now seen corresponding path program 1 times [2024-11-28 04:48:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834095475] [2024-11-28 04:48:28,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 91 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-28 04:48:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834095475] [2024-11-28 04:48:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834095475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200874898] [2024-11-28 04:48:30,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:30,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:30,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:30,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:48:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:30,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:48:30,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:30,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200874898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:30,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 04:48:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033761777] [2024-11-28 04:48:30,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:30,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:30,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:30,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:48:30,625 INFO L87 Difference]: Start difference. First operand 29153 states and 37828 transitions. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:38,700 INFO L93 Difference]: Finished difference Result 77411 states and 102352 transitions. [2024-11-28 04:48:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 657 [2024-11-28 04:48:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:38,822 INFO L225 Difference]: With dead ends: 77411 [2024-11-28 04:48:38,822 INFO L226 Difference]: Without dead ends: 50990 [2024-11-28 04:48:38,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:48:38,851 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1544 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:38,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1676 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-28 04:48:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50990 states. [2024-11-28 04:48:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50990 to 46894. [2024-11-28 04:48:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46894 states, 46893 states have (on average 1.2159597381272258) internal successors, (57020), 46893 states have internal predecessors, (57020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46894 states to 46894 states and 57020 transitions. [2024-11-28 04:48:39,879 INFO L78 Accepts]: Start accepts. Automaton has 46894 states and 57020 transitions. Word has length 657 [2024-11-28 04:48:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:39,881 INFO L471 AbstractCegarLoop]: Abstraction has 46894 states and 57020 transitions. [2024-11-28 04:48:39,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 46894 states and 57020 transitions. [2024-11-28 04:48:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2024-11-28 04:48:39,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:39,900 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:39,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:48:40,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:40,101 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:40,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -594809828, now seen corresponding path program 1 times [2024-11-28 04:48:40,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:40,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086646371] [2024-11-28 04:48:40,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:40,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 46 proven. 254 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:42,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086646371] [2024-11-28 04:48:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086646371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714288057] [2024-11-28 04:48:42,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:42,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:42,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:42,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:48:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:42,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:48:42,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-28 04:48:43,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714288057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:43,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:48:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651191695] [2024-11-28 04:48:43,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:43,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:43,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:43,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:48:43,031 INFO L87 Difference]: Start difference. First operand 46894 states and 57020 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:52,409 INFO L93 Difference]: Finished difference Result 112982 states and 139879 transitions. [2024-11-28 04:48:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:48:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 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 747 [2024-11-28 04:48:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:52,527 INFO L225 Difference]: With dead ends: 112982 [2024-11-28 04:48:52,527 INFO L226 Difference]: Without dead ends: 67455 [2024-11-28 04:48:52,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:48:52,566 INFO L435 NwaCegarLoop]: 2830 mSDtfsCounter, 1545 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 5316 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 6219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 5316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:52,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 2950 Invalid, 6219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 5316 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 04:48:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67455 states. [2024-11-28 04:48:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67455 to 67376. [2024-11-28 04:48:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67376 states, 67375 states have (on average 1.2246679035250463) internal successors, (82512), 67375 states have internal predecessors, (82512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67376 states to 67376 states and 82512 transitions. [2024-11-28 04:48:53,454 INFO L78 Accepts]: Start accepts. Automaton has 67376 states and 82512 transitions. Word has length 747 [2024-11-28 04:48:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:53,456 INFO L471 AbstractCegarLoop]: Abstraction has 67376 states and 82512 transitions. [2024-11-28 04:48:53,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:48:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 67376 states and 82512 transitions. [2024-11-28 04:48:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2024-11-28 04:48:53,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:53,468 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:48:53,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:48:53,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:53,669 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:53,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash 252272073, now seen corresponding path program 1 times [2024-11-28 04:48:53,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:53,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311385496] [2024-11-28 04:48:53,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:53,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 113 proven. 24 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 04:48:55,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311385496] [2024-11-28 04:48:55,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311385496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127063976] [2024-11-28 04:48:55,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:55,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:55,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:48:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:55,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:48:55,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 04:48:55,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:48:55,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127063976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:48:55,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:48:55,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-28 04:48:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112177749] [2024-11-28 04:48:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:48:55,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:48:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:55,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:48:55,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:48:55,517 INFO L87 Difference]: Start difference. First operand 67376 states and 82512 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:02,706 INFO L93 Difference]: Finished difference Result 137485 states and 168047 transitions. [2024-11-28 04:49:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:02,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 841 [2024-11-28 04:49:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:02,809 INFO L225 Difference]: With dead ends: 137485 [2024-11-28 04:49:02,809 INFO L226 Difference]: Without dead ends: 72841 [2024-11-28 04:49:02,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 840 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:49:02,850 INFO L435 NwaCegarLoop]: 2879 mSDtfsCounter, 1553 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 3665 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:02,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3053 Invalid, 5384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1719 Valid, 3665 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-28 04:49:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72841 states. [2024-11-28 04:49:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72841 to 70103. [2024-11-28 04:49:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70103 states, 70102 states have (on average 1.12528886479701) internal successors, (78885), 70102 states have internal predecessors, (78885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70103 states to 70103 states and 78885 transitions. [2024-11-28 04:49:03,712 INFO L78 Accepts]: Start accepts. Automaton has 70103 states and 78885 transitions. Word has length 841 [2024-11-28 04:49:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:03,713 INFO L471 AbstractCegarLoop]: Abstraction has 70103 states and 78885 transitions. [2024-11-28 04:49:03,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 70103 states and 78885 transitions. [2024-11-28 04:49:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2024-11-28 04:49:03,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:03,725 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:03,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:03,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:03,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:03,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1859326145, now seen corresponding path program 1 times [2024-11-28 04:49:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391192165] [2024-11-28 04:49:03,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-28 04:49:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391192165] [2024-11-28 04:49:05,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391192165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:05,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:49:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541132347] [2024-11-28 04:49:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:05,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:49:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:05,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:49:05,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:05,630 INFO L87 Difference]: Start difference. First operand 70103 states and 78885 transitions. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:19,205 INFO L93 Difference]: Finished difference Result 179804 states and 207352 transitions. [2024-11-28 04:49:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:49:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 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 908 [2024-11-28 04:49:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:19,310 INFO L225 Difference]: With dead ends: 179804 [2024-11-28 04:49:19,311 INFO L226 Difference]: Without dead ends: 112433 [2024-11-28 04:49:19,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:19,349 INFO L435 NwaCegarLoop]: 2646 mSDtfsCounter, 2810 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 10740 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 12028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 10740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:19,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 3121 Invalid, 12028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1288 Valid, 10740 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-28 04:49:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112433 states. [2024-11-28 04:49:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112433 to 96045. [2024-11-28 04:49:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96045 states, 96044 states have (on average 1.1309191620507268) internal successors, (108618), 96044 states have internal predecessors, (108618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96045 states to 96045 states and 108618 transitions. [2024-11-28 04:49:20,548 INFO L78 Accepts]: Start accepts. Automaton has 96045 states and 108618 transitions. Word has length 908 [2024-11-28 04:49:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:20,549 INFO L471 AbstractCegarLoop]: Abstraction has 96045 states and 108618 transitions. [2024-11-28 04:49:20,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 96045 states and 108618 transitions. [2024-11-28 04:49:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2024-11-28 04:49:20,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:20,563 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:20,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:49:20,563 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:20,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1170426960, now seen corresponding path program 1 times [2024-11-28 04:49:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:20,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723469428] [2024-11-28 04:49:20,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:20,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 04:49:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723469428] [2024-11-28 04:49:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723469428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:21,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:21,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:49:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370275302] [2024-11-28 04:49:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:21,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:21,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:21,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:21,549 INFO L87 Difference]: Start difference. First operand 96045 states and 108618 transitions. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:31,333 INFO L93 Difference]: Finished difference Result 220772 states and 253117 transitions. [2024-11-28 04:49:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 922 [2024-11-28 04:49:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:31,450 INFO L225 Difference]: With dead ends: 220772 [2024-11-28 04:49:31,450 INFO L226 Difference]: Without dead ends: 127459 [2024-11-28 04:49:31,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:31,490 INFO L435 NwaCegarLoop]: 1482 mSDtfsCounter, 1443 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 1659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1659 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:31,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 1669 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1659 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-28 04:49:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127459 states. [2024-11-28 04:49:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127459 to 96005. [2024-11-28 04:49:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96005 states, 96004 states have (on average 1.1334215241031624) internal successors, (108813), 96004 states have internal predecessors, (108813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96005 states to 96005 states and 108813 transitions. [2024-11-28 04:49:33,013 INFO L78 Accepts]: Start accepts. Automaton has 96005 states and 108813 transitions. Word has length 922 [2024-11-28 04:49:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:33,014 INFO L471 AbstractCegarLoop]: Abstraction has 96005 states and 108813 transitions. [2024-11-28 04:49:33,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 96005 states and 108813 transitions. [2024-11-28 04:49:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2024-11-28 04:49:33,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:33,027 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:49:33,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:49:33,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:33,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1985021326, now seen corresponding path program 1 times [2024-11-28 04:49:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:33,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356009565] [2024-11-28 04:49:33,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:33,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-11-28 04:49:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356009565] [2024-11-28 04:49:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356009565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:34,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:34,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:49:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055586043] [2024-11-28 04:49:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:34,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:34,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:34,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:34,378 INFO L87 Difference]: Start difference. First operand 96005 states and 108813 transitions. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:43,748 INFO L93 Difference]: Finished difference Result 219366 states and 249242 transitions. [2024-11-28 04:49:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:43,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 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 967 [2024-11-28 04:49:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:43,870 INFO L225 Difference]: With dead ends: 219366 [2024-11-28 04:49:43,871 INFO L226 Difference]: Without dead ends: 124727 [2024-11-28 04:49:43,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:43,904 INFO L435 NwaCegarLoop]: 3061 mSDtfsCounter, 1249 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:43,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 3229 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-28 04:49:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124727 states. [2024-11-28 04:49:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124727 to 123315. [2024-11-28 04:49:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123315 states, 123314 states have (on average 1.1184293754156056) internal successors, (137918), 123314 states have internal predecessors, (137918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123315 states to 123315 states and 137918 transitions. [2024-11-28 04:49:45,581 INFO L78 Accepts]: Start accepts. Automaton has 123315 states and 137918 transitions. Word has length 967 [2024-11-28 04:49:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:45,582 INFO L471 AbstractCegarLoop]: Abstraction has 123315 states and 137918 transitions. [2024-11-28 04:49:45,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 123315 states and 137918 transitions. [2024-11-28 04:49:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-11-28 04:49:45,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:45,595 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:45,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:49:45,595 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:45,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:45,596 INFO L85 PathProgramCache]: Analyzing trace with hash -256579835, now seen corresponding path program 1 times [2024-11-28 04:49:45,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:45,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233846839] [2024-11-28 04:49:45,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 567 proven. 218 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-28 04:49:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:49,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233846839] [2024-11-28 04:49:49,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233846839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:49,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015304191] [2024-11-28 04:49:49,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:49,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:49,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:49,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:49,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:49:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:49,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:49:49,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-11-28 04:49:49,773 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:49,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015304191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:49,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:49:49,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-28 04:49:49,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411233961] [2024-11-28 04:49:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:49,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:49,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:49,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:49,778 INFO L87 Difference]: Start difference. First operand 123315 states and 137918 transitions. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:00,364 INFO L93 Difference]: Finished difference Result 283500 states and 319804 transitions. [2024-11-28 04:50:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 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 995 [2024-11-28 04:50:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:00,528 INFO L225 Difference]: With dead ends: 283500 [2024-11-28 04:50:00,528 INFO L226 Difference]: Without dead ends: 162917 [2024-11-28 04:50:00,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:50:00,574 INFO L435 NwaCegarLoop]: 3006 mSDtfsCounter, 1373 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4825 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 5878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 4825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:00,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 3199 Invalid, 5878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 4825 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-28 04:50:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162917 states. [2024-11-28 04:50:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162917 to 160168. [2024-11-28 04:50:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160168 states, 160167 states have (on average 1.103997702398122) internal successors, (176824), 160167 states have internal predecessors, (176824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160168 states to 160168 states and 176824 transitions. [2024-11-28 04:50:02,576 INFO L78 Accepts]: Start accepts. Automaton has 160168 states and 176824 transitions. Word has length 995 [2024-11-28 04:50:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:02,577 INFO L471 AbstractCegarLoop]: Abstraction has 160168 states and 176824 transitions. [2024-11-28 04:50:02,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 160168 states and 176824 transitions. [2024-11-28 04:50:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-11-28 04:50:02,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:02,586 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:50:02,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:50:02,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:50:02,787 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:02,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:02,788 INFO L85 PathProgramCache]: Analyzing trace with hash -305564813, now seen corresponding path program 1 times [2024-11-28 04:50:02,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236807330] [2024-11-28 04:50:02,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-28 04:50:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236807330] [2024-11-28 04:50:03,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236807330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:50:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172491652] [2024-11-28 04:50:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:03,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:03,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:03,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:03,893 INFO L87 Difference]: Start difference. First operand 160168 states and 176824 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 2 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:13,637 INFO L93 Difference]: Finished difference Result 365380 states and 407524 transitions. [2024-11-28 04:50:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:50:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 2 states have internal predecessors, (719), 0 states have call successors, (0), 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 995 [2024-11-28 04:50:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:13,861 INFO L225 Difference]: With dead ends: 365380 [2024-11-28 04:50:13,861 INFO L226 Difference]: Without dead ends: 207944 [2024-11-28 04:50:13,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:50:13,907 INFO L435 NwaCegarLoop]: 656 mSDtfsCounter, 1358 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3916 mSolverCounterSat, 2027 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2027 IncrementalHoareTripleChecker+Valid, 3916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:13,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 698 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2027 Valid, 3916 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 04:50:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207944 states. [2024-11-28 04:50:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207944 to 205201. [2024-11-28 04:50:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205201 states, 205200 states have (on average 1.1087524366471735) internal successors, (227516), 205200 states have internal predecessors, (227516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205201 states to 205201 states and 227516 transitions. [2024-11-28 04:50:16,637 INFO L78 Accepts]: Start accepts. Automaton has 205201 states and 227516 transitions. Word has length 995 [2024-11-28 04:50:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:16,637 INFO L471 AbstractCegarLoop]: Abstraction has 205201 states and 227516 transitions. [2024-11-28 04:50:16,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 2 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 205201 states and 227516 transitions. [2024-11-28 04:50:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-28 04:50:16,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:16,649 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:16,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:50:16,649 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:16,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -108368753, now seen corresponding path program 1 times [2024-11-28 04:50:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058314499] [2024-11-28 04:50:16,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-28 04:50:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058314499] [2024-11-28 04:50:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058314499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:17,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:50:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543689471] [2024-11-28 04:50:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:17,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:50:17,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:17,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:50:17,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:50:17,902 INFO L87 Difference]: Start difference. First operand 205201 states and 227516 transitions. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:35,154 INFO L93 Difference]: Finished difference Result 529263 states and 589560 transitions. [2024-11-28 04:50:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:50:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 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 1059 [2024-11-28 04:50:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:35,500 INFO L225 Difference]: With dead ends: 529263 [2024-11-28 04:50:35,500 INFO L226 Difference]: Without dead ends: 326794 [2024-11-28 04:50:35,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:50:35,594 INFO L435 NwaCegarLoop]: 1151 mSDtfsCounter, 3292 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 8701 mSolverCounterSat, 2411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 11112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2411 IncrementalHoareTripleChecker+Valid, 8701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:35,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 1391 Invalid, 11112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2411 Valid, 8701 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-11-28 04:50:35,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326794 states. [2024-11-28 04:50:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326794 to 308976. [2024-11-28 04:50:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308976 states, 308975 states have (on average 1.1067303179868921) internal successors, (341952), 308975 states have internal predecessors, (341952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308976 states to 308976 states and 341952 transitions. [2024-11-28 04:50:39,873 INFO L78 Accepts]: Start accepts. Automaton has 308976 states and 341952 transitions. Word has length 1059 [2024-11-28 04:50:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:39,874 INFO L471 AbstractCegarLoop]: Abstraction has 308976 states and 341952 transitions. [2024-11-28 04:50:39,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 308976 states and 341952 transitions. [2024-11-28 04:50:40,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2024-11-28 04:50:40,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:40,615 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:40,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:50:40,616 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:40,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1433776911, now seen corresponding path program 1 times [2024-11-28 04:50:40,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032074592] [2024-11-28 04:50:40,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:40,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 487 proven. 550 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 04:50:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032074592] [2024-11-28 04:50:44,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032074592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741326932] [2024-11-28 04:50:44,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:44,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:44,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:44,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7faeeaaf-4e26-4bbe-a725-82d631b65282/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:50:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:44,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:50:44,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2024-11-28 04:50:44,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:50:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741326932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:44,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:50:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:50:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063719368] [2024-11-28 04:50:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:44,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:50:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:44,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:50:44,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:50:44,818 INFO L87 Difference]: Start difference. First operand 308976 states and 341952 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)