./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.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_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 355322de5dcfb8cbd44ad690b6b14768d5a2fa38ff5dfd1ede94c260e278eb8b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:06:41,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:06:41,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:06:41,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:06:41,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:06:41,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:06:41,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:06:41,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:06:41,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:06:41,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:06:41,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:06:41,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:06:41,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:06:41,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:06:41,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:06:41,943 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:41,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:06:41,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:41,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:06:41,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:06:41,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:06:41,945 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_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355322de5dcfb8cbd44ad690b6b14768d5a2fa38ff5dfd1ede94c260e278eb8b [2024-12-02 06:06:42,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:06:42,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:06:42,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:06:42,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:06:42,192 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:06:42,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2024-12-02 06:06:44,831 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/data/a3327371c/ba51c2ca9dd24d3d876bc9b94d061974/FLAG72f7f228b [2024-12-02 06:06:45,213 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:06:45,213 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2024-12-02 06:06:45,238 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/data/a3327371c/ba51c2ca9dd24d3d876bc9b94d061974/FLAG72f7f228b [2024-12-02 06:06:45,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/data/a3327371c/ba51c2ca9dd24d3d876bc9b94d061974 [2024-12-02 06:06:45,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:06:45,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:06:45,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:06:45,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:06:45,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:06:45,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:06:45" (1/1) ... [2024-12-02 06:06:45,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630cdb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:45, skipping insertion in model container [2024-12-02 06:06:45,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:06:45" (1/1) ... [2024-12-02 06:06:45,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:06:45,744 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_36a95fcf-8069-48fa-b019-af738dfc24f7/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[8616,8629] [2024-12-02 06:06:45,781 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_36a95fcf-8069-48fa-b019-af738dfc24f7/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[10953,10966] [2024-12-02 06:06:46,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:06:46,307 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:06:46,331 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_36a95fcf-8069-48fa-b019-af738dfc24f7/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[8616,8629] [2024-12-02 06:06:46,336 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_36a95fcf-8069-48fa-b019-af738dfc24f7/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c[10953,10966] [2024-12-02 06:06:46,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:06:46,777 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:06:46,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46 WrapperNode [2024-12-02 06:06:46,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:06:46,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:06:46,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:06:46,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:06:46,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:46,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,091 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-12-02 06:06:47,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:06:47,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:06:47,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:06:47,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:06:47,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:06:47,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,391 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,425 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:06:47,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:06:47,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:06:47,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:06:47,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (1/1) ... [2024-12-02 06:06:47,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:06:47,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:06:47,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:06:47,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:06:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:06:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:06:47,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:06:47,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:06:47,646 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:06:47,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:06:51,676 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-12-02 06:06:51,676 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:06:51,701 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:06:51,701 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 06:06:51,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:51 BoogieIcfgContainer [2024-12-02 06:06:51,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:06:51,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:06:51,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:06:51,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:06:51,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:06:45" (1/3) ... [2024-12-02 06:06:51,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7fd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:51, skipping insertion in model container [2024-12-02 06:06:51,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:06:46" (2/3) ... [2024-12-02 06:06:51,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a7fd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:06:51, skipping insertion in model container [2024-12-02 06:06:51,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:06:51" (3/3) ... [2024-12-02 06:06:51,712 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c [2024-12-02 06:06:51,723 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:06:51,725 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label03.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 06:06:51,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:06:51,798 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;@6cf84671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:06:51,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 06:06:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 06:06:51,810 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:51,810 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] [2024-12-02 06:06:51,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:51,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1208309317, now seen corresponding path program 1 times [2024-12-02 06:06:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391395986] [2024-12-02 06:06:51,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:51,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391395986] [2024-12-02 06:06:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391395986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:52,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:52,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:06:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618216973] [2024-12-02 06:06:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:52,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:52,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:52,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:52,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:52,064 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:55,524 INFO L93 Difference]: Finished difference Result 2514 states and 4828 transitions. [2024-12-02 06:06:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-12-02 06:06:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:55,542 INFO L225 Difference]: With dead ends: 2514 [2024-12-02 06:06:55,542 INFO L226 Difference]: Without dead ends: 1571 [2024-12-02 06:06:55,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:55,549 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 914 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:55,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 640 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:06:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-12-02 06:06:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2024-12-02 06:06:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.6112173358827278) internal successors, (2528), 1570 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2528 transitions. [2024-12-02 06:06:55,629 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2528 transitions. Word has length 20 [2024-12-02 06:06:55,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:55,629 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2528 transitions. [2024-12-02 06:06:55,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2528 transitions. [2024-12-02 06:06:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 06:06:55,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:55,631 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] [2024-12-02 06:06:55,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:06:55,631 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:55,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-12-02 06:06:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608129920] [2024-12-02 06:06:55,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608129920] [2024-12-02 06:06:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608129920] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:55,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:55,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:06:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553848271] [2024-12-02 06:06:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:55,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:06:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:55,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:06:55,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:06:55,772 INFO L87 Difference]: Start difference. First operand 1571 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:55,849 INFO L93 Difference]: Finished difference Result 1649 states and 2648 transitions. [2024-12-02 06:06:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:55,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-12-02 06:06:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:55,857 INFO L225 Difference]: With dead ends: 1649 [2024-12-02 06:06:55,857 INFO L226 Difference]: Without dead ends: 1608 [2024-12-02 06:06:55,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:06:55,859 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:55,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2024-12-02 06:06:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1571. [2024-12-02 06:06:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.5965583173996176) internal successors, (2505), 1570 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2505 transitions. [2024-12-02 06:06:55,899 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2505 transitions. Word has length 23 [2024-12-02 06:06:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:55,899 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2505 transitions. [2024-12-02 06:06:55,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2505 transitions. [2024-12-02 06:06:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 06:06:55,901 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:55,901 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] [2024-12-02 06:06:55,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:06:55,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:55,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-12-02 06:06:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254465852] [2024-12-02 06:06:55,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:56,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254465852] [2024-12-02 06:06:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254465852] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:56,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702150713] [2024-12-02 06:06:56,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:56,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:56,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:56,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:56,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:56,085 INFO L87 Difference]: Start difference. First operand 1571 states and 2505 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:56,236 INFO L93 Difference]: Finished difference Result 1867 states and 2969 transitions. [2024-12-02 06:06:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:06:56,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-12-02 06:06:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:56,242 INFO L225 Difference]: With dead ends: 1867 [2024-12-02 06:06:56,242 INFO L226 Difference]: Without dead ends: 1830 [2024-12-02 06:06:56,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:06:56,243 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:56,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:56,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2024-12-02 06:06:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1606. [2024-12-02 06:06:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1604 states have (on average 1.5960099750623442) internal successors, (2560), 1605 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2560 transitions. [2024-12-02 06:06:56,272 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2560 transitions. Word has length 45 [2024-12-02 06:06:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:56,272 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2560 transitions. [2024-12-02 06:06:56,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2560 transitions. [2024-12-02 06:06:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 06:06:56,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:56,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:56,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:06:56,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:56,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-12-02 06:06:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298109152] [2024-12-02 06:06:56,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298109152] [2024-12-02 06:06:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298109152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:56,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:56,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:06:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587454019] [2024-12-02 06:06:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:56,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:56,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:56,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:56,353 INFO L87 Difference]: Start difference. First operand 1606 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:56,383 INFO L93 Difference]: Finished difference Result 1739 states and 2767 transitions. [2024-12-02 06:06:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:56,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-12-02 06:06:56,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:56,388 INFO L225 Difference]: With dead ends: 1739 [2024-12-02 06:06:56,388 INFO L226 Difference]: Without dead ends: 1667 [2024-12-02 06:06:56,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:56,390 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:56,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-12-02 06:06:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2024-12-02 06:06:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.5935057125676488) internal successors, (2650), 1664 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2650 transitions. [2024-12-02 06:06:56,418 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2650 transitions. Word has length 47 [2024-12-02 06:06:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:56,418 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2650 transitions. [2024-12-02 06:06:56,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2650 transitions. [2024-12-02 06:06:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 06:06:56,420 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:56,420 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] [2024-12-02 06:06:56,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:06:56,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:56,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-12-02 06:06:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042168110] [2024-12-02 06:06:56,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042168110] [2024-12-02 06:06:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042168110] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:56,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:56,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736488350] [2024-12-02 06:06:56,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:56,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:56,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:56,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:56,617 INFO L87 Difference]: Start difference. First operand 1665 states and 2650 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:56,721 INFO L93 Difference]: Finished difference Result 1798 states and 2854 transitions. [2024-12-02 06:06:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:06:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-12-02 06:06:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:56,727 INFO L225 Difference]: With dead ends: 1798 [2024-12-02 06:06:56,727 INFO L226 Difference]: Without dead ends: 1667 [2024-12-02 06:06:56,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:06:56,728 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 2968 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:56,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 1688 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-12-02 06:06:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2024-12-02 06:06:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.592303066746843) internal successors, (2648), 1664 states have internal predecessors, (2648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2648 transitions. [2024-12-02 06:06:56,756 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2648 transitions. Word has length 47 [2024-12-02 06:06:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:56,757 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2648 transitions. [2024-12-02 06:06:56,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2648 transitions. [2024-12-02 06:06:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 06:06:56,757 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:56,757 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] [2024-12-02 06:06:56,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:06:56,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:56,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-12-02 06:06:56,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:56,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242383283] [2024-12-02 06:06:56,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:56,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242383283] [2024-12-02 06:06:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242383283] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:56,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:06:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929889991] [2024-12-02 06:06:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:56,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:06:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:56,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:06:56,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:06:56,912 INFO L87 Difference]: Start difference. First operand 1665 states and 2648 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-12-02 06:06:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:56,948 INFO L93 Difference]: Finished difference Result 1673 states and 2657 transitions. [2024-12-02 06:06:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:06:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 [2024-12-02 06:06:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:56,954 INFO L225 Difference]: With dead ends: 1673 [2024-12-02 06:06:56,954 INFO L226 Difference]: Without dead ends: 1671 [2024-12-02 06:06:56,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:06:56,955 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:56,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:56,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-12-02 06:06:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2024-12-02 06:06:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.5895745955662073) internal successors, (2653), 1670 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2653 transitions. [2024-12-02 06:06:56,979 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2653 transitions. Word has length 48 [2024-12-02 06:06:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:56,979 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 2653 transitions. [2024-12-02 06:06:56,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-12-02 06:06:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2653 transitions. [2024-12-02 06:06:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 06:06:56,980 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:56,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:56,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:06:56,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:56,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-12-02 06:06:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:56,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435776618] [2024-12-02 06:06:56,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435776618] [2024-12-02 06:06:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435776618] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:06:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765835175] [2024-12-02 06:06:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:57,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:57,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:57,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,026 INFO L87 Difference]: Start difference. First operand 1671 states and 2653 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:57,050 INFO L93 Difference]: Finished difference Result 1822 states and 2879 transitions. [2024-12-02 06:06:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-12-02 06:06:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:57,055 INFO L225 Difference]: With dead ends: 1822 [2024-12-02 06:06:57,055 INFO L226 Difference]: Without dead ends: 1744 [2024-12-02 06:06:57,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,057 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:57,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2024-12-02 06:06:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2024-12-02 06:06:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.5844827586206895) internal successors, (2757), 1741 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2757 transitions. [2024-12-02 06:06:57,086 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2757 transitions. Word has length 49 [2024-12-02 06:06:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:57,086 INFO L471 AbstractCegarLoop]: Abstraction has 1742 states and 2757 transitions. [2024-12-02 06:06:57,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2757 transitions. [2024-12-02 06:06:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 06:06:57,087 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:57,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:57,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:06:57,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:57,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-12-02 06:06:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:57,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537034458] [2024-12-02 06:06:57,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:57,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537034458] [2024-12-02 06:06:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537034458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:57,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:57,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:06:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779986339] [2024-12-02 06:06:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:57,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:57,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:57,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,136 INFO L87 Difference]: Start difference. First operand 1742 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:57,162 INFO L93 Difference]: Finished difference Result 2128 states and 3329 transitions. [2024-12-02 06:06:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:57,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-12-02 06:06:57,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:57,168 INFO L225 Difference]: With dead ends: 2128 [2024-12-02 06:06:57,168 INFO L226 Difference]: Without dead ends: 1923 [2024-12-02 06:06:57,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,169 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:57,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2024-12-02 06:06:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1921. [2024-12-02 06:06:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1919 states have (on average 1.5711307972902553) internal successors, (3015), 1920 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3015 transitions. [2024-12-02 06:06:57,202 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3015 transitions. Word has length 49 [2024-12-02 06:06:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:57,202 INFO L471 AbstractCegarLoop]: Abstraction has 1921 states and 3015 transitions. [2024-12-02 06:06:57,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3015 transitions. [2024-12-02 06:06:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 06:06:57,203 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:57,203 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:57,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:06:57,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:57,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-12-02 06:06:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:57,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927949519] [2024-12-02 06:06:57,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:57,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:57,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927949519] [2024-12-02 06:06:57,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927949519] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:57,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:57,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:06:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692984364] [2024-12-02 06:06:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:57,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:57,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:57,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,251 INFO L87 Difference]: Start difference. First operand 1921 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:57,284 INFO L93 Difference]: Finished difference Result 2641 states and 4061 transitions. [2024-12-02 06:06:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:57,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-12-02 06:06:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:57,289 INFO L225 Difference]: With dead ends: 2641 [2024-12-02 06:06:57,289 INFO L226 Difference]: Without dead ends: 2257 [2024-12-02 06:06:57,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,290 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:57,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-12-02 06:06:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2255. [2024-12-02 06:06:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.5459387483355527) internal successors, (3483), 2254 states have internal predecessors, (3483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3483 transitions. [2024-12-02 06:06:57,329 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3483 transitions. Word has length 49 [2024-12-02 06:06:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:57,329 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3483 transitions. [2024-12-02 06:06:57,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3483 transitions. [2024-12-02 06:06:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 06:06:57,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:57,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:57,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:06:57,330 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:57,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-12-02 06:06:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718862126] [2024-12-02 06:06:57,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:06:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718862126] [2024-12-02 06:06:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718862126] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:06:57,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803211410] [2024-12-02 06:06:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:57,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:06:57,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:57,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:06:57,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,388 INFO L87 Difference]: Start difference. First operand 2255 states and 3483 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:57,428 INFO L93 Difference]: Finished difference Result 3595 states and 5381 transitions. [2024-12-02 06:06:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:06:57,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2024-12-02 06:06:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:57,434 INFO L225 Difference]: With dead ends: 3595 [2024-12-02 06:06:57,434 INFO L226 Difference]: Without dead ends: 2877 [2024-12-02 06:06:57,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:06:57,436 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:57,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-12-02 06:06:57,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2875. [2024-12-02 06:06:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.5046989209885138) internal successors, (4323), 2874 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4323 transitions. [2024-12-02 06:06:57,490 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4323 transitions. Word has length 49 [2024-12-02 06:06:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:57,490 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4323 transitions. [2024-12-02 06:06:57,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4323 transitions. [2024-12-02 06:06:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 06:06:57,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:57,492 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:57,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:06:57,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:57,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-12-02 06:06:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264687894] [2024-12-02 06:06:57,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:06:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264687894] [2024-12-02 06:06:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264687894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317795306] [2024-12-02 06:06:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:57,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:57,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:57,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:57,657 INFO L87 Difference]: Start difference. First operand 2875 states and 4323 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:57,865 INFO L93 Difference]: Finished difference Result 8149 states and 11696 transitions. [2024-12-02 06:06:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:06:57,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-12-02 06:06:57,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:57,887 INFO L225 Difference]: With dead ends: 8149 [2024-12-02 06:06:57,887 INFO L226 Difference]: Without dead ends: 7187 [2024-12-02 06:06:57,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:57,891 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4652 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:57,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:06:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-12-02 06:06:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-12-02 06:06:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.4695652173913043) internal successors, (5915), 4026 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 5915 transitions. [2024-12-02 06:06:58,032 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 5915 transitions. Word has length 67 [2024-12-02 06:06:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:58,032 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 5915 transitions. [2024-12-02 06:06:58,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 5915 transitions. [2024-12-02 06:06:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 06:06:58,034 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:58,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:58,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:06:58,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:58,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-12-02 06:06:58,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:58,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084497812] [2024-12-02 06:06:58,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:58,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 06:06:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084497812] [2024-12-02 06:06:58,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084497812] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:58,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:58,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:58,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443002765] [2024-12-02 06:06:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:58,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:58,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:58,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:58,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:58,172 INFO L87 Difference]: Start difference. First operand 4027 states and 5915 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:58,417 INFO L93 Difference]: Finished difference Result 9485 states and 13552 transitions. [2024-12-02 06:06:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:06:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 67 [2024-12-02 06:06:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:58,435 INFO L225 Difference]: With dead ends: 9485 [2024-12-02 06:06:58,435 INFO L226 Difference]: Without dead ends: 8147 [2024-12-02 06:06:58,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:58,439 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4652 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:58,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3373 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:58,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-12-02 06:06:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-12-02 06:06:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.441362780345831) internal successors, (8419), 5842 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8419 transitions. [2024-12-02 06:06:58,620 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8419 transitions. Word has length 67 [2024-12-02 06:06:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:58,621 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8419 transitions. [2024-12-02 06:06:58,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8419 transitions. [2024-12-02 06:06:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 06:06:58,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:58,623 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:58,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:06:58,623 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:58,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-12-02 06:06:58,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:58,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227628437] [2024-12-02 06:06:58,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 06:06:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227628437] [2024-12-02 06:06:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227628437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:58,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:58,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:58,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56667608] [2024-12-02 06:06:58,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:58,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:58,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:58,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:58,768 INFO L87 Difference]: Start difference. First operand 5843 states and 8419 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:59,041 INFO L93 Difference]: Finished difference Result 10821 states and 15400 transitions. [2024-12-02 06:06:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:06:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 67 [2024-12-02 06:06:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:59,059 INFO L225 Difference]: With dead ends: 10821 [2024-12-02 06:06:59,059 INFO L226 Difference]: Without dead ends: 9483 [2024-12-02 06:06:59,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:59,062 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4675 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:59,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 3356 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-12-02 06:06:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-12-02 06:06:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.430542009196043) internal successors, (10267), 7178 states have internal predecessors, (10267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10267 transitions. [2024-12-02 06:06:59,264 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10267 transitions. Word has length 67 [2024-12-02 06:06:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:59,264 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10267 transitions. [2024-12-02 06:06:59,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10267 transitions. [2024-12-02 06:06:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 06:06:59,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:59,266 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:59,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:06:59,267 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:59,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-12-02 06:06:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028485017] [2024-12-02 06:06:59,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 06:06:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028485017] [2024-12-02 06:06:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028485017] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:06:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146716630] [2024-12-02 06:06:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:59,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:06:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:59,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:06:59,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:06:59,406 INFO L87 Difference]: Start difference. First operand 7179 states and 10267 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:59,662 INFO L93 Difference]: Finished difference Result 12157 states and 17248 transitions. [2024-12-02 06:06:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:06:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 67 [2024-12-02 06:06:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:59,684 INFO L225 Difference]: With dead ends: 12157 [2024-12-02 06:06:59,684 INFO L226 Difference]: Without dead ends: 10819 [2024-12-02 06:06:59,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:06:59,689 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4664 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:59,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4664 Valid, 3376 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:06:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-12-02 06:06:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-12-02 06:06:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4231175848701985) internal successors, (12115), 8514 states have internal predecessors, (12115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12115 transitions. [2024-12-02 06:06:59,908 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12115 transitions. Word has length 67 [2024-12-02 06:06:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:59,908 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12115 transitions. [2024-12-02 06:06:59,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:06:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12115 transitions. [2024-12-02 06:06:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:06:59,909 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:59,910 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:59,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:06:59,910 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:59,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-12-02 06:06:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352642922] [2024-12-02 06:06:59,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:00,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:00,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352642922] [2024-12-02 06:07:00,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352642922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:00,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:00,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:07:00,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815733065] [2024-12-02 06:07:00,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:00,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:07:00,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:00,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:07:00,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,035 INFO L87 Difference]: Start difference. First operand 8515 states and 12115 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:00,187 INFO L93 Difference]: Finished difference Result 15495 states and 21781 transitions. [2024-12-02 06:07:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:07:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 06:07:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:00,204 INFO L225 Difference]: With dead ends: 15495 [2024-12-02 06:07:00,204 INFO L226 Difference]: Without dead ends: 8517 [2024-12-02 06:07:00,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,211 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:00,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:07:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-12-02 06:07:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-12-02 06:07:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4085516269235288) internal successors, (11991), 8514 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 11991 transitions. [2024-12-02 06:07:00,422 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 11991 transitions. Word has length 68 [2024-12-02 06:07:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:00,423 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 11991 transitions. [2024-12-02 06:07:00,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 11991 transitions. [2024-12-02 06:07:00,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:07:00,424 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:00,424 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:00,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:07:00,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:00,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-12-02 06:07:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764737951] [2024-12-02 06:07:00,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764737951] [2024-12-02 06:07:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764737951] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:00,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:07:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455766768] [2024-12-02 06:07:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:00,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:07:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:00,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:07:00,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,511 INFO L87 Difference]: Start difference. First operand 8515 states and 11991 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:00,590 INFO L93 Difference]: Finished difference Result 11177 states and 15664 transitions. [2024-12-02 06:07:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:07:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 06:07:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:00,599 INFO L225 Difference]: With dead ends: 11177 [2024-12-02 06:07:00,599 INFO L226 Difference]: Without dead ends: 4199 [2024-12-02 06:07:00,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,605 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:00,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:07:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-12-02 06:07:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-12-02 06:07:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.4493791786055397) internal successors, (6070), 4189 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6070 transitions. [2024-12-02 06:07:00,692 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6070 transitions. Word has length 69 [2024-12-02 06:07:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:00,692 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6070 transitions. [2024-12-02 06:07:00,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6070 transitions. [2024-12-02 06:07:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:07:00,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:00,694 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:00,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:07:00,694 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:00,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-12-02 06:07:00,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032877158] [2024-12-02 06:07:00,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032877158] [2024-12-02 06:07:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032877158] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:00,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:00,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:07:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615335670] [2024-12-02 06:07:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:00,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:07:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:00,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:07:00,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,780 INFO L87 Difference]: Start difference. First operand 4190 states and 6070 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:00,827 INFO L93 Difference]: Finished difference Result 5514 states and 7876 transitions. [2024-12-02 06:07:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:07:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 06:07:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:00,834 INFO L225 Difference]: With dead ends: 5514 [2024-12-02 06:07:00,834 INFO L226 Difference]: Without dead ends: 2872 [2024-12-02 06:07:00,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:00,837 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:00,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:07:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-12-02 06:07:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-12-02 06:07:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.4797768479776847) internal successors, (4244), 2869 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4244 transitions. [2024-12-02 06:07:00,919 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4244 transitions. Word has length 70 [2024-12-02 06:07:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:00,920 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4244 transitions. [2024-12-02 06:07:00,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4244 transitions. [2024-12-02 06:07:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 06:07:00,921 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:00,921 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:00,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:07:00,921 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:00,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-12-02 06:07:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:00,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397088025] [2024-12-02 06:07:00,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:01,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:01,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397088025] [2024-12-02 06:07:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397088025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:01,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:01,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:07:01,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344255963] [2024-12-02 06:07:01,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:01,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:07:01,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:01,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:07:01,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:01,038 INFO L87 Difference]: Start difference. First operand 2870 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:01,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:01,083 INFO L93 Difference]: Finished difference Result 3534 states and 5137 transitions. [2024-12-02 06:07:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:07:01,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-02 06:07:01,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:01,089 INFO L225 Difference]: With dead ends: 3534 [2024-12-02 06:07:01,089 INFO L226 Difference]: Without dead ends: 2212 [2024-12-02 06:07:01,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:07:01,091 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:01,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:07:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-12-02 06:07:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-12-02 06:07:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.513586956521739) internal successors, (3342), 2209 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3342 transitions. [2024-12-02 06:07:01,152 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3342 transitions. Word has length 72 [2024-12-02 06:07:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:01,152 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3342 transitions. [2024-12-02 06:07:01,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:01,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3342 transitions. [2024-12-02 06:07:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 06:07:01,153 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:01,153 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:07:01,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:07:01,154 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:01,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-12-02 06:07:01,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:01,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677961268] [2024-12-02 06:07:01,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:01,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:02,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:02,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677961268] [2024-12-02 06:07:02,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677961268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:02,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926226041] [2024-12-02 06:07:02,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:02,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:02,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:02,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:02,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:07:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:02,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:07:02,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:03,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:07:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926226041] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:07:04,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:07:04,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 06:07:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389391830] [2024-12-02 06:07:04,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:07:04,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:07:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:04,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:07:04,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:07:04,077 INFO L87 Difference]: Start difference. First operand 2210 states and 3342 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:06,601 INFO L93 Difference]: Finished difference Result 4574 states and 6493 transitions. [2024-12-02 06:07:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 06:07:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 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 74 [2024-12-02 06:07:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:06,607 INFO L225 Difference]: With dead ends: 4574 [2024-12-02 06:07:06,607 INFO L226 Difference]: Without dead ends: 3912 [2024-12-02 06:07:06,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=813, Invalid=3093, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 06:07:06,610 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 26266 mSDsluCounter, 6365 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26266 SdHoareTripleChecker+Valid, 7858 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:06,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26266 Valid, 7858 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 06:07:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2024-12-02 06:07:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3849. [2024-12-02 06:07:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3847 states have (on average 1.4234468416948272) internal successors, (5476), 3848 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5476 transitions. [2024-12-02 06:07:06,679 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5476 transitions. Word has length 74 [2024-12-02 06:07:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:06,680 INFO L471 AbstractCegarLoop]: Abstraction has 3849 states and 5476 transitions. [2024-12-02 06:07:06,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5476 transitions. [2024-12-02 06:07:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:07:06,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:06,681 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:07:06,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:07:06,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:06,881 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:06,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 117635487, now seen corresponding path program 1 times [2024-12-02 06:07:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:06,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309409884] [2024-12-02 06:07:06,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:07,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309409884] [2024-12-02 06:07:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309409884] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111892853] [2024-12-02 06:07:07,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:07,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:07,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:07,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:07:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:07,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 06:07:07,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:08,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:07:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111892853] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:07:09,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:07:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-12-02 06:07:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723391292] [2024-12-02 06:07:09,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:07:09,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 06:07:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:09,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 06:07:09,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:07:09,159 INFO L87 Difference]: Start difference. First operand 3849 states and 5476 transitions. Second operand has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:14,398 INFO L93 Difference]: Finished difference Result 14659 states and 19722 transitions. [2024-12-02 06:07:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-12-02 06:07:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 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 75 [2024-12-02 06:07:14,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:14,412 INFO L225 Difference]: With dead ends: 14659 [2024-12-02 06:07:14,412 INFO L226 Difference]: Without dead ends: 12358 [2024-12-02 06:07:14,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1887, Invalid=9243, Unknown=0, NotChecked=0, Total=11130 [2024-12-02 06:07:14,416 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 19395 mSDsluCounter, 12701 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19395 SdHoareTripleChecker+Valid, 14208 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:14,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19395 Valid, 14208 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:07:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12358 states. [2024-12-02 06:07:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12358 to 5622. [2024-12-02 06:07:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 1.3820284697508898) internal successors, (7767), 5621 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 7767 transitions. [2024-12-02 06:07:14,596 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 7767 transitions. Word has length 75 [2024-12-02 06:07:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:14,596 INFO L471 AbstractCegarLoop]: Abstraction has 5622 states and 7767 transitions. [2024-12-02 06:07:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 7767 transitions. [2024-12-02 06:07:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:07:14,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:14,597 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 06:07:14,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 06:07:14,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-12-02 06:07:14,798 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:14,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash 465454108, now seen corresponding path program 1 times [2024-12-02 06:07:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577412064] [2024-12-02 06:07:14,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:15,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:15,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577412064] [2024-12-02 06:07:15,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577412064] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:15,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156233316] [2024-12-02 06:07:15,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:15,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:15,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:15,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:15,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:07:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:15,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 06:07:15,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:07:15,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:07:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:07:15,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156233316] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:07:15,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:07:15,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-12-02 06:07:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943918446] [2024-12-02 06:07:15,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:07:15,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:07:15,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:15,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:07:15,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:07:15,790 INFO L87 Difference]: Start difference. First operand 5622 states and 7767 transitions. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:17,330 INFO L93 Difference]: Finished difference Result 19208 states and 24987 transitions. [2024-12-02 06:07:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 06:07:17,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 06:07:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:17,341 INFO L225 Difference]: With dead ends: 19208 [2024-12-02 06:07:17,341 INFO L226 Difference]: Without dead ends: 15134 [2024-12-02 06:07:17,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 06:07:17,345 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 15584 mSDsluCounter, 4886 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15584 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:17,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15584 Valid, 6397 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:07:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15134 states. [2024-12-02 06:07:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15134 to 13834. [2024-12-02 06:07:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13834 states, 13832 states have (on average 1.2763157894736843) internal successors, (17654), 13833 states have internal predecessors, (17654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13834 states to 13834 states and 17654 transitions. [2024-12-02 06:07:17,799 INFO L78 Accepts]: Start accepts. Automaton has 13834 states and 17654 transitions. Word has length 76 [2024-12-02 06:07:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:17,800 INFO L471 AbstractCegarLoop]: Abstraction has 13834 states and 17654 transitions. [2024-12-02 06:07:17,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13834 states and 17654 transitions. [2024-12-02 06:07:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:07:17,801 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:17,801 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:17,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:07:18,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 06:07:18,002 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:18,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1384788294, now seen corresponding path program 1 times [2024-12-02 06:07:18,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:18,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626855431] [2024-12-02 06:07:18,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:18,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:18,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626855431] [2024-12-02 06:07:18,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626855431] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:18,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241284581] [2024-12-02 06:07:18,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:18,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:18,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:18,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:18,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:07:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:18,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:07:18,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:18,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:07:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241284581] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:07:19,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:07:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-12-02 06:07:19,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484829485] [2024-12-02 06:07:19,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:07:19,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 06:07:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:19,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 06:07:19,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:07:19,461 INFO L87 Difference]: Start difference. First operand 13834 states and 17654 transitions. Second operand has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:20,470 INFO L93 Difference]: Finished difference Result 35890 states and 45175 transitions. [2024-12-02 06:07:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 06:07:20,471 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 06:07:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:20,488 INFO L225 Difference]: With dead ends: 35890 [2024-12-02 06:07:20,488 INFO L226 Difference]: Without dead ends: 25806 [2024-12-02 06:07:20,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:07:20,495 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 12138 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12138 SdHoareTripleChecker+Valid, 6262 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:20,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12138 Valid, 6262 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:07:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25806 states. [2024-12-02 06:07:21,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25806 to 25466. [2024-12-02 06:07:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25466 states, 25464 states have (on average 1.2442664153314482) internal successors, (31684), 25465 states have internal predecessors, (31684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25466 states to 25466 states and 31684 transitions. [2024-12-02 06:07:21,419 INFO L78 Accepts]: Start accepts. Automaton has 25466 states and 31684 transitions. Word has length 76 [2024-12-02 06:07:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:21,420 INFO L471 AbstractCegarLoop]: Abstraction has 25466 states and 31684 transitions. [2024-12-02 06:07:21,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 25466 states and 31684 transitions. [2024-12-02 06:07:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:07:21,421 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:21,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:21,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 06:07:21,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:21,621 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:21,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-12-02 06:07:21,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:21,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640464297] [2024-12-02 06:07:21,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640464297] [2024-12-02 06:07:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640464297] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040815758] [2024-12-02 06:07:22,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:22,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:22,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:07:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:22,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-12-02 06:07:22,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:26,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:07:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:30,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040815758] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:07:30,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:07:30,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 23] total 55 [2024-12-02 06:07:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794358540] [2024-12-02 06:07:30,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:07:30,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 06:07:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:30,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 06:07:30,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2566, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 06:07:30,711 INFO L87 Difference]: Start difference. First operand 25466 states and 31684 transitions. Second operand has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:53,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:53,824 INFO L93 Difference]: Finished difference Result 75514 states and 92625 transitions. [2024-12-02 06:07:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-12-02 06:07:53,825 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-02 06:07:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:53,882 INFO L225 Difference]: With dead ends: 75514 [2024-12-02 06:07:53,882 INFO L226 Difference]: Without dead ends: 66316 [2024-12-02 06:07:53,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11079 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=5198, Invalid=25954, Unknown=0, NotChecked=0, Total=31152 [2024-12-02 06:07:53,898 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 21053 mSDsluCounter, 26095 mSDsCounter, 0 mSdLazyCounter, 3887 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21053 SdHoareTripleChecker+Valid, 27652 SdHoareTripleChecker+Invalid, 4008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:53,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21053 Valid, 27652 Invalid, 4008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 3887 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 06:07:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66316 states. [2024-12-02 06:07:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66316 to 25226. [2024-12-02 06:07:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25226 states, 25224 states have (on average 1.2458769425943546) internal successors, (31426), 25225 states have internal predecessors, (31426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25226 states to 25226 states and 31426 transitions. [2024-12-02 06:07:55,006 INFO L78 Accepts]: Start accepts. Automaton has 25226 states and 31426 transitions. Word has length 77 [2024-12-02 06:07:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:55,006 INFO L471 AbstractCegarLoop]: Abstraction has 25226 states and 31426 transitions. [2024-12-02 06:07:55,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.581818181818182) internal successors, (197), 55 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:07:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 25226 states and 31426 transitions. [2024-12-02 06:07:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 06:07:55,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:55,007 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:55,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:07:55,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:55,208 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:55,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -747594897, now seen corresponding path program 1 times [2024-12-02 06:07:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870808046] [2024-12-02 06:07:55,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:57,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870808046] [2024-12-02 06:07:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870808046] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:57,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630496008] [2024-12-02 06:07:57,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:57,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:57,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:57,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:57,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:07:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:57,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 06:07:57,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:07:58,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:08:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:08:00,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630496008] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:08:00,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:08:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 12] total 46 [2024-12-02 06:08:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86987992] [2024-12-02 06:08:00,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:08:00,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 06:08:00,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:00,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 06:08:00,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1889, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 06:08:00,321 INFO L87 Difference]: Start difference. First operand 25226 states and 31426 transitions. Second operand has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:08:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:08:14,747 INFO L93 Difference]: Finished difference Result 47464 states and 58280 transitions. [2024-12-02 06:08:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-12-02 06:08:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-02 06:08:14,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:08:14,769 INFO L225 Difference]: With dead ends: 47464 [2024-12-02 06:08:14,770 INFO L226 Difference]: Without dead ends: 37288 [2024-12-02 06:08:14,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8182 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4922, Invalid=20518, Unknown=0, NotChecked=0, Total=25440 [2024-12-02 06:08:14,778 INFO L435 NwaCegarLoop]: 1676 mSDtfsCounter, 25702 mSDsluCounter, 29154 mSDsCounter, 0 mSdLazyCounter, 4664 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25702 SdHoareTripleChecker+Valid, 30830 SdHoareTripleChecker+Invalid, 4787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 4664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:08:14,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25702 Valid, 30830 Invalid, 4787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 4664 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 06:08:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37288 states. [2024-12-02 06:08:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37288 to 20708. [2024-12-02 06:08:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20708 states, 20706 states have (on average 1.2480923403844297) internal successors, (25843), 20707 states have internal predecessors, (25843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:08:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20708 states to 20708 states and 25843 transitions. [2024-12-02 06:08:15,686 INFO L78 Accepts]: Start accepts. Automaton has 20708 states and 25843 transitions. Word has length 77 [2024-12-02 06:08:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:08:15,686 INFO L471 AbstractCegarLoop]: Abstraction has 20708 states and 25843 transitions. [2024-12-02 06:08:15,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.326086956521739) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:08:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 20708 states and 25843 transitions. [2024-12-02 06:08:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:08:15,687 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:08:15,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:08:15,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:08:15,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 06:08:15,888 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:08:15,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:08:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1437385468, now seen corresponding path program 1 times [2024-12-02 06:08:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:08:15,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614883924] [2024-12-02 06:08:15,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:08:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:08:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:08:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614883924] [2024-12-02 06:08:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614883924] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:08:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839103270] [2024-12-02 06:08:17,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:17,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:08:17,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:08:17,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:08:17,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:08:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:17,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 06:08:17,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:08:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:08:21,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:08:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:08:27,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839103270] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:08:27,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:08:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 26] total 75 [2024-12-02 06:08:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048423853] [2024-12-02 06:08:27,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:08:27,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 06:08:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:27,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 06:08:27,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=4776, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 06:08:27,488 INFO L87 Difference]: Start difference. First operand 20708 states and 25843 transitions. Second operand has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:33,703 INFO L93 Difference]: Finished difference Result 58486 states and 72316 transitions. [2024-12-02 06:10:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-12-02 06:10:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 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 78 [2024-12-02 06:10:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:33,732 INFO L225 Difference]: With dead ends: 58486 [2024-12-02 06:10:33,732 INFO L226 Difference]: Without dead ends: 48386 [2024-12-02 06:10:33,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47986 ImplicationChecksByTransitivity, 118.7s TimeCoverageRelationStatistics Valid=16347, Invalid=100959, Unknown=0, NotChecked=0, Total=117306 [2024-12-02 06:10:33,745 INFO L435 NwaCegarLoop]: 1629 mSDtfsCounter, 25845 mSDsluCounter, 26215 mSDsCounter, 0 mSdLazyCounter, 8816 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25845 SdHoareTripleChecker+Valid, 27844 SdHoareTripleChecker+Invalid, 9019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 8816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:33,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25845 Valid, 27844 Invalid, 9019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [203 Valid, 8816 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-12-02 06:10:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48386 states. [2024-12-02 06:10:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48386 to 22141. [2024-12-02 06:10:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22141 states, 22139 states have (on average 1.2466687745607299) internal successors, (27600), 22140 states have internal predecessors, (27600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22141 states to 22141 states and 27600 transitions. [2024-12-02 06:10:34,913 INFO L78 Accepts]: Start accepts. Automaton has 22141 states and 27600 transitions. Word has length 78 [2024-12-02 06:10:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:34,913 INFO L471 AbstractCegarLoop]: Abstraction has 22141 states and 27600 transitions. [2024-12-02 06:10:34,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.8) internal successors, (210), 75 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:34,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22141 states and 27600 transitions. [2024-12-02 06:10:34,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 06:10:34,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:34,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:10:34,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 06:10:35,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:35,115 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:35,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1940293388, now seen corresponding path program 1 times [2024-12-02 06:10:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288260988] [2024-12-02 06:10:35,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:35,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288260988] [2024-12-02 06:10:35,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288260988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:35,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:35,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:10:35,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565403519] [2024-12-02 06:10:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:35,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:10:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:35,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:10:35,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:10:35,221 INFO L87 Difference]: Start difference. First operand 22141 states and 27600 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:39,199 INFO L93 Difference]: Finished difference Result 24396 states and 30995 transitions. [2024-12-02 06:10:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:10:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-12-02 06:10:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:39,212 INFO L225 Difference]: With dead ends: 24396 [2024-12-02 06:10:39,213 INFO L226 Difference]: Without dead ends: 22892 [2024-12-02 06:10:39,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:10:39,216 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 977 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:39,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1343 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 06:10:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22892 states. [2024-12-02 06:10:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22892 to 22892. [2024-12-02 06:10:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22892 states, 22890 states have (on average 1.2388379204892965) internal successors, (28357), 22891 states have internal predecessors, (28357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22892 states to 22892 states and 28357 transitions. [2024-12-02 06:10:40,655 INFO L78 Accepts]: Start accepts. Automaton has 22892 states and 28357 transitions. Word has length 95 [2024-12-02 06:10:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:40,655 INFO L471 AbstractCegarLoop]: Abstraction has 22892 states and 28357 transitions. [2024-12-02 06:10:40,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 22892 states and 28357 transitions. [2024-12-02 06:10:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 06:10:40,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:40,658 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:10:40,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:10:40,658 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:40,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:40,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1942011500, now seen corresponding path program 1 times [2024-12-02 06:10:40,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:40,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064983121] [2024-12-02 06:10:40,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 43 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:41,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064983121] [2024-12-02 06:10:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064983121] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781418509] [2024-12-02 06:10:41,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:41,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:41,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:10:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:41,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:10:41,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 23 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:42,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781418509] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:44,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:44,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 15] total 41 [2024-12-02 06:10:44,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466118382] [2024-12-02 06:10:44,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:44,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 06:10:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:44,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 06:10:44,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1500, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 06:10:44,697 INFO L87 Difference]: Start difference. First operand 22892 states and 28357 transitions. Second operand has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:54,063 INFO L93 Difference]: Finished difference Result 40157 states and 49320 transitions. [2024-12-02 06:10:54,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-12-02 06:10:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 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 124 [2024-12-02 06:10:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:54,088 INFO L225 Difference]: With dead ends: 40157 [2024-12-02 06:10:54,088 INFO L226 Difference]: Without dead ends: 30666 [2024-12-02 06:10:54,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1697, Invalid=9015, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 06:10:54,097 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 18776 mSDsluCounter, 23766 mSDsCounter, 0 mSdLazyCounter, 1938 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18776 SdHoareTripleChecker+Valid, 25313 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:54,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18776 Valid, 25313 Invalid, 2013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1938 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 06:10:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30666 states. [2024-12-02 06:10:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30666 to 21328. [2024-12-02 06:10:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21328 states, 21326 states have (on average 1.2354871987245615) internal successors, (26348), 21327 states have internal predecessors, (26348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21328 states to 21328 states and 26348 transitions. [2024-12-02 06:10:55,395 INFO L78 Accepts]: Start accepts. Automaton has 21328 states and 26348 transitions. Word has length 124 [2024-12-02 06:10:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:55,395 INFO L471 AbstractCegarLoop]: Abstraction has 21328 states and 26348 transitions. [2024-12-02 06:10:55,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.634146341463415) internal successors, (354), 41 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:10:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 21328 states and 26348 transitions. [2024-12-02 06:10:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:10:55,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:55,397 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 06:10:55,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:10:55,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:55,598 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:55,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1684250167, now seen corresponding path program 1 times [2024-12-02 06:10:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676853709] [2024-12-02 06:10:55,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 32 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676853709] [2024-12-02 06:10:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676853709] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:10:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459204941] [2024-12-02 06:10:56,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:56,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:10:56,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:10:56,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:10:56,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:10:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:56,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 06:10:56,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:10:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 35 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:57,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:10:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 32 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:10:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459204941] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:10:58,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:10:58,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-12-02 06:10:58,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865714587] [2024-12-02 06:10:58,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:10:58,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 06:10:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:58,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 06:10:58,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-12-02 06:10:58,520 INFO L87 Difference]: Start difference. First operand 21328 states and 26348 transitions. Second operand has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 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) [2024-12-02 06:11:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:11:00,415 INFO L93 Difference]: Finished difference Result 33358 states and 41165 transitions. [2024-12-02 06:11:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:11:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 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 125 [2024-12-02 06:11:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:11:00,430 INFO L225 Difference]: With dead ends: 33358 [2024-12-02 06:11:00,430 INFO L226 Difference]: Without dead ends: 22305 [2024-12-02 06:11:00,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:11:00,436 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 13548 mSDsluCounter, 7732 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13548 SdHoareTripleChecker+Valid, 9260 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:11:00,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13548 Valid, 9260 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:11:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2024-12-02 06:11:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 21268. [2024-12-02 06:11:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21266 states have (on average 1.227546318066397) internal successors, (26105), 21267 states have internal predecessors, (26105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:11:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 26105 transitions. [2024-12-02 06:11:01,841 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 26105 transitions. Word has length 125 [2024-12-02 06:11:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:11:01,842 INFO L471 AbstractCegarLoop]: Abstraction has 21268 states and 26105 transitions. [2024-12-02 06:11:01,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.25925925925926) internal successors, (277), 26 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) [2024-12-02 06:11:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 26105 transitions. [2024-12-02 06:11:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:11:01,845 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:11:01,846 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:11:01,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:11:02,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 06:11:02,046 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:11:02,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:11:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1393249079, now seen corresponding path program 1 times [2024-12-02 06:11:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:11:02,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513442118] [2024-12-02 06:11:02,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:02,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:11:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:11:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513442118] [2024-12-02 06:11:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513442118] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:11:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203509849] [2024-12-02 06:11:02,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:11:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:11:02,716 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:11:02,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:11:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:02,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 06:11:02,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:11:03,673 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:03,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:11:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:05,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203509849] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:11:05,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:11:05,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2024-12-02 06:11:05,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27288698] [2024-12-02 06:11:05,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:11:05,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 06:11:05,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:11:05,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 06:11:05,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:11:05,425 INFO L87 Difference]: Start difference. First operand 21268 states and 26105 transitions. Second operand has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:11:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:11:08,231 INFO L93 Difference]: Finished difference Result 33831 states and 41474 transitions. [2024-12-02 06:11:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:11:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-12-02 06:11:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:11:08,245 INFO L225 Difference]: With dead ends: 33831 [2024-12-02 06:11:08,245 INFO L226 Difference]: Without dead ends: 22734 [2024-12-02 06:11:08,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 06:11:08,250 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 18772 mSDsluCounter, 12473 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18772 SdHoareTripleChecker+Valid, 13992 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:11:08,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18772 Valid, 13992 Invalid, 993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 06:11:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22734 states. [2024-12-02 06:11:09,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22734 to 21268. [2024-12-02 06:11:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21266 states have (on average 1.2194112668108719) internal successors, (25932), 21267 states have internal predecessors, (25932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:11:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 25932 transitions. [2024-12-02 06:11:09,520 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 25932 transitions. Word has length 125 [2024-12-02 06:11:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:11:09,520 INFO L471 AbstractCegarLoop]: Abstraction has 21268 states and 25932 transitions. [2024-12-02 06:11:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.0) internal successors, (300), 29 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:11:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 25932 transitions. [2024-12-02 06:11:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 06:11:09,522 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:11:09,522 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:11:09,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:11:09,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 06:11:09,723 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:11:09,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:11:09,723 INFO L85 PathProgramCache]: Analyzing trace with hash 891280809, now seen corresponding path program 1 times [2024-12-02 06:11:09,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:11:09,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127548525] [2024-12-02 06:11:09,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:09,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:11:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:11:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127548525] [2024-12-02 06:11:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127548525] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:11:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521863146] [2024-12-02 06:11:10,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:10,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:11:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:11:10,488 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:11:10,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:11:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:10,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 06:11:10,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:11:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:12,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:11:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:11:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521863146] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:11:19,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:11:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 22] total 58 [2024-12-02 06:11:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936779868] [2024-12-02 06:11:19,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:11:19,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 06:11:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:11:19,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 06:11:19,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=3002, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 06:11:19,019 INFO L87 Difference]: Start difference. First operand 21268 states and 25932 transitions. Second operand has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:15:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:15:25,354 INFO L93 Difference]: Finished difference Result 119279 states and 143786 transitions. [2024-12-02 06:15:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 623 states. [2024-12-02 06:15:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-12-02 06:15:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:15:25,433 INFO L225 Difference]: With dead ends: 119279 [2024-12-02 06:15:25,434 INFO L226 Difference]: Without dead ends: 106410 [2024-12-02 06:15:25,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 677 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213386 ImplicationChecksByTransitivity, 232.1s TimeCoverageRelationStatistics Valid=51625, Invalid=408737, Unknown=0, NotChecked=0, Total=460362 [2024-12-02 06:15:25,465 INFO L435 NwaCegarLoop]: 1762 mSDtfsCounter, 46187 mSDsluCounter, 35391 mSDsCounter, 0 mSdLazyCounter, 7598 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46187 SdHoareTripleChecker+Valid, 37153 SdHoareTripleChecker+Invalid, 8034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 7598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:15:25,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46187 Valid, 37153 Invalid, 8034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [436 Valid, 7598 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-12-02 06:15:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106410 states. [2024-12-02 06:15:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106410 to 67088. [2024-12-02 06:15:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67088 states, 67086 states have (on average 1.2045732343559015) internal successors, (80810), 67087 states have internal predecessors, (80810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:15:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67088 states to 67088 states and 80810 transitions. [2024-12-02 06:15:31,975 INFO L78 Accepts]: Start accepts. Automaton has 67088 states and 80810 transitions. Word has length 125 [2024-12-02 06:15:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:15:31,975 INFO L471 AbstractCegarLoop]: Abstraction has 67088 states and 80810 transitions. [2024-12-02 06:15:31,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 6.017241379310345) internal successors, (349), 58 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:15:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 67088 states and 80810 transitions. [2024-12-02 06:15:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 06:15:31,980 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:15:31,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:15:31,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 06:15:32,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:15:32,180 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:15:32,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:15:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash 607913984, now seen corresponding path program 1 times [2024-12-02 06:15:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:15:32,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402391735] [2024-12-02 06:15:32,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:15:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:15:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:15:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:15:33,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:15:33,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402391735] [2024-12-02 06:15:33,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402391735] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:15:33,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689457151] [2024-12-02 06:15:33,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:15:33,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:15:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:15:33,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:15:33,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:15:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:15:34,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 06:15:34,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:15:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:15:37,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:15:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:15:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689457151] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:15:44,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:15:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 26] total 76 [2024-12-02 06:15:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022633562] [2024-12-02 06:15:44,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:15:44,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 06:15:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:15:44,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 06:15:44,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=5220, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 06:15:44,482 INFO L87 Difference]: Start difference. First operand 67088 states and 80810 transitions. Second operand has 76 states, 76 states have (on average 4.657894736842105) internal successors, (354), 76 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:19:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:53,167 INFO L93 Difference]: Finished difference Result 265878 states and 319525 transitions. [2024-12-02 06:19:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 619 states. [2024-12-02 06:19:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.657894736842105) internal successors, (354), 76 states have internal predecessors, (354), 0 states have call successors, (0), 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 126 [2024-12-02 06:19:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:53,379 INFO L225 Difference]: With dead ends: 265878 [2024-12-02 06:19:53,379 INFO L226 Difference]: Without dead ends: 243347 [2024-12-02 06:19:53,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 685 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205101 ImplicationChecksByTransitivity, 214.7s TimeCoverageRelationStatistics Valid=40757, Invalid=430525, Unknown=0, NotChecked=0, Total=471282 [2024-12-02 06:19:53,422 INFO L435 NwaCegarLoop]: 1695 mSDtfsCounter, 33001 mSDsluCounter, 49371 mSDsCounter, 0 mSdLazyCounter, 13127 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33001 SdHoareTripleChecker+Valid, 51066 SdHoareTripleChecker+Invalid, 13514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 13127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:53,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33001 Valid, 51066 Invalid, 13514 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [387 Valid, 13127 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-12-02 06:19:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243347 states. [2024-12-02 06:20:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243347 to 101392. [2024-12-02 06:20:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101392 states, 101390 states have (on average 1.2004931452805996) internal successors, (121718), 101391 states have internal predecessors, (121718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101392 states to 101392 states and 121718 transitions. [2024-12-02 06:20:04,838 INFO L78 Accepts]: Start accepts. Automaton has 101392 states and 121718 transitions. Word has length 126 [2024-12-02 06:20:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:04,838 INFO L471 AbstractCegarLoop]: Abstraction has 101392 states and 121718 transitions. [2024-12-02 06:20:04,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.657894736842105) internal successors, (354), 76 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 101392 states and 121718 transitions. [2024-12-02 06:20:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 06:20:04,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:04,843 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:04,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 06:20:05,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:20:05,044 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:05,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1751572064, now seen corresponding path program 1 times [2024-12-02 06:20:05,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:05,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032208424] [2024-12-02 06:20:05,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032208424] [2024-12-02 06:20:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032208424] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:20:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806241153] [2024-12-02 06:20:07,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:07,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:20:07,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:07,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:20:07,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a95fcf-8069-48fa-b019-af738dfc24f7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:20:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:07,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-02 06:20:07,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:20:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:11,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:20:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806241153] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:20:20,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:20:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 23] total 74 [2024-12-02 06:20:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116074153] [2024-12-02 06:20:20,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:20:20,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 06:20:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:20,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 06:20:20,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=4987, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 06:20:20,063 INFO L87 Difference]: Start difference. First operand 101392 states and 121718 transitions. Second operand has 74 states, 74 states have (on average 4.743243243243243) internal successors, (351), 74 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)