./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/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 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 05:49:40,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 05:49:40,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 05:49:40,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 05:49:40,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 05:49:40,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 05:49:40,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 05:49:40,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 05:49:40,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 05:49:40,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 05:49:40,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 05:49:40,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 05:49:40,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 05:49:40,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 05:49:40,925 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 05:49:40,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 05:49:40,926 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 05:49:40,927 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:49:40,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:49:40,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:49:40,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 05:49:40,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 05:49:40,929 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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/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 -> 5076c3e55bd424afffa48cc9c2c4663afdcf72b1cbafe747c454c6704690d793 [2024-12-02 05:49:41,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 05:49:41,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 05:49:41,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 05:49:41,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 05:49:41,220 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 05:49:41,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-12-02 05:49:43,926 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/data/9109bd2b8/0d8e98a7ca904c6098483907b7bfe1f4/FLAG56d11f31d [2024-12-02 05:49:44,284 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 05:49:44,285 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-12-02 05:49:44,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/data/9109bd2b8/0d8e98a7ca904c6098483907b7bfe1f4/FLAG56d11f31d [2024-12-02 05:49:44,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/data/9109bd2b8/0d8e98a7ca904c6098483907b7bfe1f4 [2024-12-02 05:49:44,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 05:49:44,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 05:49:44,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 05:49:44,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 05:49:44,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 05:49:44,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:49:44" (1/1) ... [2024-12-02 05:49:44,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d47ea25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:44, skipping insertion in model container [2024-12-02 05:49:44,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:49:44" (1/1) ... [2024-12-02 05:49:44,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 05:49:44,897 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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2024-12-02 05:49:44,956 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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2024-12-02 05:49:45,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:49:45,561 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 05:49:45,587 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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[6354,6367] [2024-12-02 05:49:45,602 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_645a21dc-da2c-4613-a47e-bfe9a79b68a3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c[14102,14115] [2024-12-02 05:49:46,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:49:46,132 INFO L204 MainTranslator]: Completed translation [2024-12-02 05:49:46,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46 WrapperNode [2024-12-02 05:49:46,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 05:49:46,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 05:49:46,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 05:49:46,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 05:49:46,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,529 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-12-02 05:49:46,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 05:49:46,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 05:49:46,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 05:49:46,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 05:49:46,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,797 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 05:49:46,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,906 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:46,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:47,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 05:49:47,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 05:49:47,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 05:49:47,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 05:49:47,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (1/1) ... [2024-12-02 05:49:47,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:49:47,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:49:47,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 05:49:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 05:49:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 05:49:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 05:49:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 05:49:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 05:49:47,231 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 05:49:47,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 05:49:52,098 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 05:49:52,098 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 05:49:52,130 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 05:49:52,131 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 05:49:52,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:49:52 BoogieIcfgContainer [2024-12-02 05:49:52,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 05:49:52,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 05:49:52,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 05:49:52,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 05:49:52,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:49:44" (1/3) ... [2024-12-02 05:49:52,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:49:52, skipping insertion in model container [2024-12-02 05:49:52,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:49:46" (2/3) ... [2024-12-02 05:49:52,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:49:52, skipping insertion in model container [2024-12-02 05:49:52,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:49:52" (3/3) ... [2024-12-02 05:49:52,141 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c [2024-12-02 05:49:52,153 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 05:49:52,156 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label09.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 05:49:52,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 05:49:52,241 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;@62fc1058, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 05:49:52,241 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 05:49:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 05:49:52,254 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:52,254 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] [2024-12-02 05:49:52,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:52,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 05:49:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:52,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872333679] [2024-12-02 05:49:52,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:52,448 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 05:49:52,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:52,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872333679] [2024-12-02 05:49:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872333679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:52,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:52,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 05:49:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782642994] [2024-12-02 05:49:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:52,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 05:49:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:52,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 05:49:52,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 05:49:52,473 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:52,551 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 05:49:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 05:49:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 05:49:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:52,565 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 05:49:52,566 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 05:49:52,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 05:49:52,574 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:52,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 05:49:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 05:49:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 05:49:52,643 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 05:49:52,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:52,644 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 05:49:52,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,644 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 05:49:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 05:49:52,645 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:52,645 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] [2024-12-02 05:49:52,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 05:49:52,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:52,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:52,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 05:49:52,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:52,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861553493] [2024-12-02 05:49:52,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:52,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:52,825 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 05:49:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861553493] [2024-12-02 05:49:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861553493] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318669218] [2024-12-02 05:49:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:52,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:52,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:52,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:52,828 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:52,962 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 05:49:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:52,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-12-02 05:49:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:52,967 INFO L225 Difference]: With dead ends: 873 [2024-12-02 05:49:52,968 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 05:49:52,968 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 05:49:52,969 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:52,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 05:49:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 05:49:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 05:49:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 05:49:52,999 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 05:49:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:52,999 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 05:49:53,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 05:49:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 05:49:53,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:53,001 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] [2024-12-02 05:49:53,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 05:49:53,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:53,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 05:49:53,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:53,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106381541] [2024-12-02 05:49:53,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:53,164 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 05:49:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106381541] [2024-12-02 05:49:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106381541] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211415748] [2024-12-02 05:49:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:53,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:53,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:53,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:53,167 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:53,298 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-12-02 05:49:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 05:49:53,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-12-02 05:49:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:53,305 INFO L225 Difference]: With dead ends: 993 [2024-12-02 05:49:53,306 INFO L226 Difference]: Without dead ends: 962 [2024-12-02 05:49:53,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:49:53,307 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:53,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 05:49:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-12-02 05:49:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-12-02 05:49:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-12-02 05:49:53,342 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-12-02 05:49:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:53,342 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-12-02 05:49:53,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-12-02 05:49:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 05:49:53,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:53,344 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] [2024-12-02 05:49:53,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 05:49:53,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:53,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 05:49:53,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:53,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006153370] [2024-12-02 05:49:53,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:53,444 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 05:49:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006153370] [2024-12-02 05:49:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006153370] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:53,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086456273] [2024-12-02 05:49:53,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:53,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:53,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:53,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:53,446 INFO L87 Difference]: Start difference. First operand 836 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:53,491 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-12-02 05:49:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:53,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-12-02 05:49:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:53,496 INFO L225 Difference]: With dead ends: 945 [2024-12-02 05:49:53,497 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 05:49:53,497 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 05:49:53,498 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 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 05:49:53,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 05:49:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 05:49:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-12-02 05:49:53,532 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-12-02 05:49:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:53,533 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-12-02 05:49:53,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-12-02 05:49:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 05:49:53,534 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:53,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:49:53,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 05:49:53,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 05:49:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354762740] [2024-12-02 05:49:53,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:53,726 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 05:49:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:53,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354762740] [2024-12-02 05:49:53,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354762740] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:53,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986406301] [2024-12-02 05:49:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:53,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:53,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:53,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:53,728 INFO L87 Difference]: Start difference. First operand 883 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:53,818 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-12-02 05:49:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-12-02 05:49:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:53,823 INFO L225 Difference]: With dead ends: 992 [2024-12-02 05:49:53,824 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 05:49:53,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 05:49:53,826 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:53,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 05:49:53,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 05:49:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-12-02 05:49:53,853 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-12-02 05:49:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:53,854 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-12-02 05:49:53,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-12-02 05:49:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 05:49:53,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:53,855 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] [2024-12-02 05:49:53,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 05:49:53,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:53,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 05:49:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:53,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083744384] [2024-12-02 05:49:53,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,050 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 05:49:54,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083744384] [2024-12-02 05:49:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083744384] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113450180] [2024-12-02 05:49:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:54,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:54,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:54,052 INFO L87 Difference]: Start difference. First operand 883 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:54,093 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-12-02 05:49:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:54,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-12-02 05:49:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:54,098 INFO L225 Difference]: With dead ends: 891 [2024-12-02 05:49:54,098 INFO L226 Difference]: Without dead ends: 889 [2024-12-02 05:49:54,098 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 05:49:54,099 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 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 05:49:54,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-12-02 05:49:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-12-02 05:49:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-12-02 05:49:54,117 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-12-02 05:49:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:54,118 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-12-02 05:49:54,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-12-02 05:49:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 05:49:54,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:54,118 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] [2024-12-02 05:49:54,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 05:49:54,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:54,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 05:49:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764337244] [2024-12-02 05:49:54,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,167 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 05:49:54,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764337244] [2024-12-02 05:49:54,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764337244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:54,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315167805] [2024-12-02 05:49:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:54,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:54,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:54,168 INFO L87 Difference]: Start difference. First operand 889 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:54,193 INFO L93 Difference]: Finished difference Result 1099 states and 1931 transitions. [2024-12-02 05:49:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 05:49:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:54,197 INFO L225 Difference]: With dead ends: 1099 [2024-12-02 05:49:54,197 INFO L226 Difference]: Without dead ends: 986 [2024-12-02 05:49:54,198 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 05:49:54,198 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 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 05:49:54,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-12-02 05:49:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-12-02 05:49:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.7922606924643585) internal successors, (1760), 983 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1760 transitions. [2024-12-02 05:49:54,218 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1760 transitions. Word has length 40 [2024-12-02 05:49:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:54,219 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1760 transitions. [2024-12-02 05:49:54,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1760 transitions. [2024-12-02 05:49:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 05:49:54,220 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:54,220 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] [2024-12-02 05:49:54,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 05:49:54,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:54,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 05:49:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:54,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216785570] [2024-12-02 05:49:54,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,281 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 05:49:54,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216785570] [2024-12-02 05:49:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216785570] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:54,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072122249] [2024-12-02 05:49:54,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:54,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:54,282 INFO L87 Difference]: Start difference. First operand 984 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:54,317 INFO L93 Difference]: Finished difference Result 1368 states and 2302 transitions. [2024-12-02 05:49:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 05:49:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:54,326 INFO L225 Difference]: With dead ends: 1368 [2024-12-02 05:49:54,326 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 05:49:54,327 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 05:49:54,328 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 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 05:49:54,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 05:49:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-12-02 05:49:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1156 states have (on average 1.7249134948096885) internal successors, (1994), 1157 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1994 transitions. [2024-12-02 05:49:54,367 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1994 transitions. Word has length 40 [2024-12-02 05:49:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:54,368 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1994 transitions. [2024-12-02 05:49:54,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1994 transitions. [2024-12-02 05:49:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 05:49:54,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:54,369 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] [2024-12-02 05:49:54,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 05:49:54,369 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:54,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 05:49:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219768155] [2024-12-02 05:49:54,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,429 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 05:49:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219768155] [2024-12-02 05:49:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219768155] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389965467] [2024-12-02 05:49:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:54,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:54,430 INFO L87 Difference]: Start difference. First operand 1158 states and 1994 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:54,466 INFO L93 Difference]: Finished difference Result 1581 states and 2592 transitions. [2024-12-02 05:49:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:54,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-12-02 05:49:54,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:54,476 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 05:49:54,476 INFO L226 Difference]: Without dead ends: 1355 [2024-12-02 05:49:54,477 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 05:49:54,478 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 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 05:49:54,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-12-02 05:49:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-12-02 05:49:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-12-02 05:49:54,520 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-12-02 05:49:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:54,520 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-12-02 05:49:54,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-12-02 05:49:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 05:49:54,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:54,521 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] [2024-12-02 05:49:54,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 05:49:54,522 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:54,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 05:49:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515737269] [2024-12-02 05:49:54,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 05:49:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515737269] [2024-12-02 05:49:54,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515737269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:54,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451621248] [2024-12-02 05:49:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:54,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:54,663 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:54,783 INFO L93 Difference]: Finished difference Result 3209 states and 4809 transitions. [2024-12-02 05:49:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:54,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 56 [2024-12-02 05:49:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:54,794 INFO L225 Difference]: With dead ends: 3209 [2024-12-02 05:49:54,794 INFO L226 Difference]: Without dead ends: 2635 [2024-12-02 05:49:54,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 05:49:54,796 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:54,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-12-02 05:49:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1925. [2024-12-02 05:49:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1923 states have (on average 1.579303172126885) internal successors, (3037), 1924 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3037 transitions. [2024-12-02 05:49:54,867 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3037 transitions. Word has length 56 [2024-12-02 05:49:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:54,867 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3037 transitions. [2024-12-02 05:49:54,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3037 transitions. [2024-12-02 05:49:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 05:49:54,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:54,869 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] [2024-12-02 05:49:54,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 05:49:54,869 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:54,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 05:49:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:54,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642982393] [2024-12-02 05:49:54,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 05:49:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:54,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642982393] [2024-12-02 05:49:54,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642982393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:54,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:54,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412434611] [2024-12-02 05:49:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:54,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:54,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:54,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:54,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:54,999 INFO L87 Difference]: Start difference. First operand 1925 states and 3037 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:55,138 INFO L93 Difference]: Finished difference Result 3781 states and 5589 transitions. [2024-12-02 05:49:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:55,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 56 [2024-12-02 05:49:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:55,150 INFO L225 Difference]: With dead ends: 3781 [2024-12-02 05:49:55,150 INFO L226 Difference]: Without dead ends: 3207 [2024-12-02 05:49:55,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 05:49:55,153 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:55,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2024-12-02 05:49:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2785. [2024-12-02 05:49:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.5080848005749192) internal successors, (4197), 2784 states have internal predecessors, (4197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4197 transitions. [2024-12-02 05:49:55,248 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4197 transitions. Word has length 56 [2024-12-02 05:49:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:55,248 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4197 transitions. [2024-12-02 05:49:55,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4197 transitions. [2024-12-02 05:49:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 05:49:55,249 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:55,249 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] [2024-12-02 05:49:55,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 05:49:55,250 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:55,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 05:49:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9456575] [2024-12-02 05:49:55,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 05:49:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9456575] [2024-12-02 05:49:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9456575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 05:49:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069732458] [2024-12-02 05:49:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:55,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 05:49:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:55,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 05:49:55,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 05:49:55,371 INFO L87 Difference]: Start difference. First operand 2785 states and 4197 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:55,500 INFO L93 Difference]: Finished difference Result 4041 states and 5953 transitions. [2024-12-02 05:49:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 05:49:55,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 56 [2024-12-02 05:49:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:55,512 INFO L225 Difference]: With dead ends: 4041 [2024-12-02 05:49:55,512 INFO L226 Difference]: Without dead ends: 3623 [2024-12-02 05:49:55,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 05:49:55,514 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:55,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3171 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-12-02 05:49:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3201. [2024-12-02 05:49:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4920287589871835) internal successors, (4773), 3200 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4773 transitions. [2024-12-02 05:49:55,617 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4773 transitions. Word has length 56 [2024-12-02 05:49:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:55,617 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4773 transitions. [2024-12-02 05:49:55,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4773 transitions. [2024-12-02 05:49:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 05:49:55,619 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:55,619 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] [2024-12-02 05:49:55,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 05:49:55,619 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:55,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 05:49:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:55,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807554038] [2024-12-02 05:49:55,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:49:55,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807554038] [2024-12-02 05:49:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807554038] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526530191] [2024-12-02 05:49:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:55,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:55,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:55,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:55,724 INFO L87 Difference]: Start difference. First operand 3201 states and 4773 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:55,791 INFO L93 Difference]: Finished difference Result 5625 states and 8083 transitions. [2024-12-02 05:49:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-12-02 05:49:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:55,803 INFO L225 Difference]: With dead ends: 5625 [2024-12-02 05:49:55,803 INFO L226 Difference]: Without dead ends: 3203 [2024-12-02 05:49:55,806 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 05:49:55,806 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 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 05:49:55,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2024-12-02 05:49:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3201. [2024-12-02 05:49:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4763988746483276) internal successors, (4723), 3200 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4723 transitions. [2024-12-02 05:49:55,933 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4723 transitions. Word has length 57 [2024-12-02 05:49:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:55,933 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4723 transitions. [2024-12-02 05:49:55,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4723 transitions. [2024-12-02 05:49:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 05:49:55,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:55,935 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] [2024-12-02 05:49:55,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 05:49:55,935 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:55,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 05:49:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145931750] [2024-12-02 05:49:55,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:49:56,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145931750] [2024-12-02 05:49:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145931750] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942797118] [2024-12-02 05:49:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:56,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:56,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:56,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:56,041 INFO L87 Difference]: Start difference. First operand 3201 states and 4723 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:56,081 INFO L93 Difference]: Finished difference Result 4157 states and 6020 transitions. [2024-12-02 05:49:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-12-02 05:49:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:56,087 INFO L225 Difference]: With dead ends: 4157 [2024-12-02 05:49:56,087 INFO L226 Difference]: Without dead ends: 1735 [2024-12-02 05:49:56,090 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 05:49:56,090 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 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 05:49:56,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-12-02 05:49:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1726. [2024-12-02 05:49:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.58584686774942) internal successors, (2734), 1725 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2734 transitions. [2024-12-02 05:49:56,135 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2734 transitions. Word has length 58 [2024-12-02 05:49:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:56,136 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2734 transitions. [2024-12-02 05:49:56,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2734 transitions. [2024-12-02 05:49:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 05:49:56,137 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:56,137 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] [2024-12-02 05:49:56,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 05:49:56,137 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:56,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 05:49:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234181344] [2024-12-02 05:49:56,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:49:56,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:56,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234181344] [2024-12-02 05:49:56,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234181344] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:49:56,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:49:56,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:49:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839263377] [2024-12-02 05:49:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:49:56,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:49:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:56,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:49:56,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:49:56,239 INFO L87 Difference]: Start difference. First operand 1726 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 05:49:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:56,273 INFO L93 Difference]: Finished difference Result 2198 states and 3366 transitions. [2024-12-02 05:49:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:49:56,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 59 [2024-12-02 05:49:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:56,279 INFO L225 Difference]: With dead ends: 2198 [2024-12-02 05:49:56,279 INFO L226 Difference]: Without dead ends: 1260 [2024-12-02 05:49:56,281 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 05:49:56,282 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 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 05:49:56,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 05:49:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-12-02 05:49:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2024-12-02 05:49:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1256 states have (on average 1.6679936305732483) internal successors, (2095), 1257 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2095 transitions. [2024-12-02 05:49:56,316 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2095 transitions. Word has length 59 [2024-12-02 05:49:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:56,316 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 2095 transitions. [2024-12-02 05:49:56,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 05:49:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2095 transitions. [2024-12-02 05:49:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 05:49:56,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:56,317 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] [2024-12-02 05:49:56,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 05:49:56,318 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:56,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 05:49:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970622082] [2024-12-02 05:49:56,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 05:49:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970622082] [2024-12-02 05:49:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970622082] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:49:56,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895444914] [2024-12-02 05:49:56,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:49:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:49:56,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:49:56,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 05:49:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:56,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 05:49:56,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:49:57,002 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 05:49:57,002 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:49:57,765 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 05:49:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895444914] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:49:57,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:49:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-12-02 05:49:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941236076] [2024-12-02 05:49:57,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:49:57,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 05:49:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:49:57,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 05:49:57,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 05:49:57,767 INFO L87 Difference]: Start difference. First operand 1258 states and 2095 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:49:58,599 INFO L93 Difference]: Finished difference Result 2739 states and 4008 transitions. [2024-12-02 05:49:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 05:49:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 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 61 [2024-12-02 05:49:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:49:58,605 INFO L225 Difference]: With dead ends: 2739 [2024-12-02 05:49:58,605 INFO L226 Difference]: Without dead ends: 2269 [2024-12-02 05:49:58,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 05:49:58,607 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 13831 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13831 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 05:49:58,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13831 Valid, 6133 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 05:49:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2024-12-02 05:49:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2129. [2024-12-02 05:49:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2127 states have (on average 1.4866008462623412) internal successors, (3162), 2128 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3162 transitions. [2024-12-02 05:49:58,666 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3162 transitions. Word has length 61 [2024-12-02 05:49:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:49:58,666 INFO L471 AbstractCegarLoop]: Abstraction has 2129 states and 3162 transitions. [2024-12-02 05:49:58,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:49:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3162 transitions. [2024-12-02 05:49:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 05:49:58,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:49:58,667 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] [2024-12-02 05:49:58,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 05:49:58,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:49:58,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:49:58,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:49:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-12-02 05:49:58,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:49:58,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689950818] [2024-12-02 05:49:58,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:49:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:59,368 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 05:49:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:49:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689950818] [2024-12-02 05:49:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689950818] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:49:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205056603] [2024-12-02 05:49:59,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:49:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:49:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:49:59,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:49:59,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 05:49:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:49:59,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 05:49:59,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:49:59,899 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 05:49:59,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:00,677 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 05:50:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205056603] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:00,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 05:50:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891455002] [2024-12-02 05:50:00,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:00,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 05:50:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:00,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 05:50:00,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-12-02 05:50:00,679 INFO L87 Difference]: Start difference. First operand 2129 states and 3162 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:02,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:02,012 INFO L93 Difference]: Finished difference Result 5620 states and 7641 transitions. [2024-12-02 05:50:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 05:50:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 05:50:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:02,019 INFO L225 Difference]: With dead ends: 5620 [2024-12-02 05:50:02,019 INFO L226 Difference]: Without dead ends: 4399 [2024-12-02 05:50:02,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 05:50:02,023 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 16657 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16657 SdHoareTripleChecker+Valid, 7857 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:02,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16657 Valid, 7857 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 05:50:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2024-12-02 05:50:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4373. [2024-12-02 05:50:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4371 states have (on average 1.3674216426447037) internal successors, (5977), 4372 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 5977 transitions. [2024-12-02 05:50:02,148 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 5977 transitions. Word has length 62 [2024-12-02 05:50:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:02,148 INFO L471 AbstractCegarLoop]: Abstraction has 4373 states and 5977 transitions. [2024-12-02 05:50:02,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 5977 transitions. [2024-12-02 05:50:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 05:50:02,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:02,150 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:50:02,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 05:50:02,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 05:50:02,350 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:02,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-12-02 05:50:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765898893] [2024-12-02 05:50:02,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765898893] [2024-12-02 05:50:03,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765898893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:03,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220262510] [2024-12-02 05:50:03,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:03,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:03,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:03,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 05:50:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:03,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 05:50:03,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:04,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220262510] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:04,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-12-02 05:50:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651190499] [2024-12-02 05:50:04,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:04,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 05:50:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:04,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 05:50:04,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 05:50:04,960 INFO L87 Difference]: Start difference. First operand 4373 states and 5977 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:06,532 INFO L93 Difference]: Finished difference Result 11157 states and 14828 transitions. [2024-12-02 05:50:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 05:50:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 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 63 [2024-12-02 05:50:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:06,545 INFO L225 Difference]: With dead ends: 11157 [2024-12-02 05:50:06,545 INFO L226 Difference]: Without dead ends: 9653 [2024-12-02 05:50:06,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 05:50:06,548 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11794 mSDsluCounter, 13669 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11794 SdHoareTripleChecker+Valid, 15168 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:06,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11794 Valid, 15168 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 05:50:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states. [2024-12-02 05:50:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9653 to 3940. [2024-12-02 05:50:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3938 states have (on average 1.3793803961401727) internal successors, (5432), 3939 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 5432 transitions. [2024-12-02 05:50:06,701 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 5432 transitions. Word has length 63 [2024-12-02 05:50:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:06,701 INFO L471 AbstractCegarLoop]: Abstraction has 3940 states and 5432 transitions. [2024-12-02 05:50:06,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 5432 transitions. [2024-12-02 05:50:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 05:50:06,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:06,703 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:50:06,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 05:50:06,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 05:50:06,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:06,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-12-02 05:50:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697947073] [2024-12-02 05:50:06,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:07,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697947073] [2024-12-02 05:50:07,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697947073] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722364225] [2024-12-02 05:50:07,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:07,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:07,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:07,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 05:50:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:07,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 05:50:07,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:09,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722364225] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:13,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-12-02 05:50:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665684270] [2024-12-02 05:50:13,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:13,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 05:50:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:13,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 05:50:13,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 05:50:13,216 INFO L87 Difference]: Start difference. First operand 3940 states and 5432 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:26,857 INFO L93 Difference]: Finished difference Result 8691 states and 11415 transitions. [2024-12-02 05:50:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 05:50:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 63 [2024-12-02 05:50:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:26,865 INFO L225 Difference]: With dead ends: 8691 [2024-12-02 05:50:26,865 INFO L226 Difference]: Without dead ends: 6335 [2024-12-02 05:50:26,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 05:50:26,868 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 19231 mSDsluCounter, 19200 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19231 SdHoareTripleChecker+Valid, 20733 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:26,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19231 Valid, 20733 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 05:50:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2024-12-02 05:50:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 5113. [2024-12-02 05:50:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5111 states have (on average 1.3549207591469379) internal successors, (6925), 5112 states have internal predecessors, (6925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 6925 transitions. [2024-12-02 05:50:26,986 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 6925 transitions. Word has length 63 [2024-12-02 05:50:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:26,987 INFO L471 AbstractCegarLoop]: Abstraction has 5113 states and 6925 transitions. [2024-12-02 05:50:26,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 6925 transitions. [2024-12-02 05:50:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 05:50:26,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:26,987 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:26,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 05:50:27,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:27,188 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:27,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2087890483, now seen corresponding path program 1 times [2024-12-02 05:50:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82651300] [2024-12-02 05:50:27,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:27,301 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 05:50:27,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:27,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82651300] [2024-12-02 05:50:27,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82651300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:50:27,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:50:27,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:50:27,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606987524] [2024-12-02 05:50:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:50:27,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 05:50:27,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:27,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 05:50:27,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 05:50:27,303 INFO L87 Difference]: Start difference. First operand 5113 states and 6925 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:33,232 INFO L93 Difference]: Finished difference Result 7368 states and 11234 transitions. [2024-12-02 05:50:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 05:50:33,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 05:50:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:33,238 INFO L225 Difference]: With dead ends: 7368 [2024-12-02 05:50:33,238 INFO L226 Difference]: Without dead ends: 6615 [2024-12-02 05:50:33,239 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 05:50:33,239 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 2319 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:33,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 763 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 05:50:33,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2024-12-02 05:50:33,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6615. [2024-12-02 05:50:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6613 states have (on average 1.3668531680024194) internal successors, (9039), 6614 states have internal predecessors, (9039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 9039 transitions. [2024-12-02 05:50:33,436 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 9039 transitions. Word has length 67 [2024-12-02 05:50:33,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:33,436 INFO L471 AbstractCegarLoop]: Abstraction has 6615 states and 9039 transitions. [2024-12-02 05:50:33,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 9039 transitions. [2024-12-02 05:50:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 05:50:33,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:33,438 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-12-02 05:50:33,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 05:50:33,438 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:33,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:33,438 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-12-02 05:50:33,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:33,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089657526] [2024-12-02 05:50:33,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:33,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089657526] [2024-12-02 05:50:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089657526] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059434569] [2024-12-02 05:50:34,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:34,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:34,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:34,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 05:50:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:34,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 05:50:34,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 05:50:34,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 05:50:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059434569] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:34,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-12-02 05:50:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117499919] [2024-12-02 05:50:34,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:34,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 05:50:34,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:35,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 05:50:35,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 05:50:35,000 INFO L87 Difference]: Start difference. First operand 6615 states and 9039 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:38,819 INFO L93 Difference]: Finished difference Result 16957 states and 21753 transitions. [2024-12-02 05:50:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-12-02 05:50:38,819 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 05:50:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:38,828 INFO L225 Difference]: With dead ends: 16957 [2024-12-02 05:50:38,829 INFO L226 Difference]: Without dead ends: 12854 [2024-12-02 05:50:38,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 05:50:38,833 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 18605 mSDsluCounter, 11550 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18605 SdHoareTripleChecker+Valid, 13124 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:38,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18605 Valid, 13124 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 05:50:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2024-12-02 05:50:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 10201. [2024-12-02 05:50:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10199 states have (on average 1.2932640454946562) internal successors, (13190), 10200 states have internal predecessors, (13190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 13190 transitions. [2024-12-02 05:50:39,159 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 13190 transitions. Word has length 103 [2024-12-02 05:50:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:39,159 INFO L471 AbstractCegarLoop]: Abstraction has 10201 states and 13190 transitions. [2024-12-02 05:50:39,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 13190 transitions. [2024-12-02 05:50:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 05:50:39,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:39,160 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 05:50:39,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 05:50:39,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 05:50:39,361 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:39,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-12-02 05:50:39,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:39,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612565808] [2024-12-02 05:50:39,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:39,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612565808] [2024-12-02 05:50:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612565808] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448937518] [2024-12-02 05:50:40,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:40,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:40,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:40,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 05:50:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:40,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 05:50:40,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:41,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:43,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448937518] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:43,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:43,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-12-02 05:50:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793348750] [2024-12-02 05:50:43,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:43,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 05:50:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:43,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 05:50:43,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 05:50:43,223 INFO L87 Difference]: Start difference. First operand 10201 states and 13190 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:50:51,585 INFO L93 Difference]: Finished difference Result 25680 states and 32024 transitions. [2024-12-02 05:50:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 05:50:51,586 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 05:50:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:50:51,601 INFO L225 Difference]: With dead ends: 25680 [2024-12-02 05:50:51,601 INFO L226 Difference]: Without dead ends: 20807 [2024-12-02 05:50:51,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-12-02 05:50:51,609 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 19726 mSDsluCounter, 25490 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19726 SdHoareTripleChecker+Valid, 27095 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 05:50:51,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19726 Valid, 27095 Invalid, 2441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 05:50:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2024-12-02 05:50:52,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 13791. [2024-12-02 05:50:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13791 states, 13789 states have (on average 1.2656465298426283) internal successors, (17452), 13790 states have internal predecessors, (17452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:52,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 17452 transitions. [2024-12-02 05:50:52,139 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 17452 transitions. Word has length 103 [2024-12-02 05:50:52,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:50:52,140 INFO L471 AbstractCegarLoop]: Abstraction has 13791 states and 17452 transitions. [2024-12-02 05:50:52,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 17452 transitions. [2024-12-02 05:50:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 05:50:52,141 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:50:52,142 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:52,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 05:50:52,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 05:50:52,342 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:50:52,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-12-02 05:50:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002253548] [2024-12-02 05:50:52,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 05:50:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002253548] [2024-12-02 05:50:53,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002253548] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374221076] [2024-12-02 05:50:53,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:53,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:53,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:53,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:53,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 05:50:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:53,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 05:50:53,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:56,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:51:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:51:00,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374221076] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:51:00,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:51:00,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-12-02 05:51:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775432112] [2024-12-02 05:51:00,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:51:00,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 05:51:00,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:51:00,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 05:51:00,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 05:51:00,020 INFO L87 Difference]: Start difference. First operand 13791 states and 17452 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:51:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:51:35,482 INFO L93 Difference]: Finished difference Result 23058 states and 28622 transitions. [2024-12-02 05:51:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-12-02 05:51:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 05:51:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:51:35,496 INFO L225 Difference]: With dead ends: 23058 [2024-12-02 05:51:35,496 INFO L226 Difference]: Without dead ends: 18950 [2024-12-02 05:51:35,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 05:51:35,504 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 29664 mSDsluCounter, 33654 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29664 SdHoareTripleChecker+Valid, 35297 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 05:51:35,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29664 Valid, 35297 Invalid, 3587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [149 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 05:51:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2024-12-02 05:51:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 18037. [2024-12-02 05:51:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18037 states, 18035 states have (on average 1.2492375935680622) internal successors, (22530), 18036 states have internal predecessors, (22530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:51:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 22530 transitions. [2024-12-02 05:51:36,320 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 22530 transitions. Word has length 104 [2024-12-02 05:51:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:51:36,320 INFO L471 AbstractCegarLoop]: Abstraction has 18037 states and 22530 transitions. [2024-12-02 05:51:36,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:51:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 22530 transitions. [2024-12-02 05:51:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 05:51:36,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:51:36,322 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 05:51:36,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 05:51:36,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:51:36,522 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:51:36,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:51:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-12-02 05:51:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:51:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454384056] [2024-12-02 05:51:36,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:51:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:51:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:51:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:51:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:51:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454384056] [2024-12-02 05:51:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454384056] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:51:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056464280] [2024-12-02 05:51:37,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:51:37,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:51:37,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:51:37,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:51:37,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 05:51:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:51:38,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 05:51:38,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:51:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:51:39,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:51:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:51:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056464280] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:51:40,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:51:40,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-12-02 05:51:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510502481] [2024-12-02 05:51:40,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:51:40,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 05:51:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:51:40,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 05:51:40,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 05:51:40,908 INFO L87 Difference]: Start difference. First operand 18037 states and 22530 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:52:04,014 INFO L93 Difference]: Finished difference Result 36525 states and 44738 transitions. [2024-12-02 05:52:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-12-02 05:52:04,015 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 05:52:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:52:04,037 INFO L225 Difference]: With dead ends: 36525 [2024-12-02 05:52:04,037 INFO L226 Difference]: Without dead ends: 26023 [2024-12-02 05:52:04,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-12-02 05:52:04,045 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 24986 mSDsluCounter, 39081 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24986 SdHoareTripleChecker+Valid, 40766 SdHoareTripleChecker+Invalid, 4478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 05:52:04,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24986 Valid, 40766 Invalid, 4478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [193 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 05:52:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2024-12-02 05:52:05,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21137. [2024-12-02 05:52:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21137 states, 21135 states have (on average 1.2407854270167968) internal successors, (26224), 21136 states have internal predecessors, (26224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21137 states to 21137 states and 26224 transitions. [2024-12-02 05:52:05,170 INFO L78 Accepts]: Start accepts. Automaton has 21137 states and 26224 transitions. Word has length 105 [2024-12-02 05:52:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:52:05,170 INFO L471 AbstractCegarLoop]: Abstraction has 21137 states and 26224 transitions. [2024-12-02 05:52:05,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21137 states and 26224 transitions. [2024-12-02 05:52:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 05:52:05,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:52:05,172 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 05:52:05,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 05:52:05,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:52:05,372 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:52:05,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:52:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-12-02 05:52:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:52:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272409113] [2024-12-02 05:52:05,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:52:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:06,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:52:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272409113] [2024-12-02 05:52:06,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272409113] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:52:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957978051] [2024-12-02 05:52:06,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:06,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:52:06,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:52:06,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:52:06,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 05:52:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:06,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 05:52:06,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:52:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:08,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:52:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957978051] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:52:11,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:52:11,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-12-02 05:52:11,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472802511] [2024-12-02 05:52:11,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:52:11,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 05:52:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:52:11,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 05:52:11,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 05:52:11,696 INFO L87 Difference]: Start difference. First operand 21137 states and 26224 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:52:19,280 INFO L93 Difference]: Finished difference Result 34085 states and 41897 transitions. [2024-12-02 05:52:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 05:52:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 05:52:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:52:19,296 INFO L225 Difference]: With dead ends: 34085 [2024-12-02 05:52:19,296 INFO L226 Difference]: Without dead ends: 22688 [2024-12-02 05:52:19,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 05:52:19,302 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 14505 mSDsluCounter, 26749 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14505 SdHoareTripleChecker+Valid, 28332 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 05:52:19,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14505 Valid, 28332 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 05:52:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22688 states. [2024-12-02 05:52:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22688 to 19991. [2024-12-02 05:52:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19991 states, 19989 states have (on average 1.2368302566411526) internal successors, (24723), 19990 states have internal predecessors, (24723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19991 states to 19991 states and 24723 transitions. [2024-12-02 05:52:20,912 INFO L78 Accepts]: Start accepts. Automaton has 19991 states and 24723 transitions. Word has length 105 [2024-12-02 05:52:20,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:52:20,912 INFO L471 AbstractCegarLoop]: Abstraction has 19991 states and 24723 transitions. [2024-12-02 05:52:20,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 19991 states and 24723 transitions. [2024-12-02 05:52:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 05:52:20,913 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:52:20,913 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:52:20,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 05:52:21,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 05:52:21,114 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:52:21,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:52:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-12-02 05:52:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:52:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740387459] [2024-12-02 05:52:21,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:21,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:52:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:22,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:52:22,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740387459] [2024-12-02 05:52:22,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740387459] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:52:22,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953314286] [2024-12-02 05:52:22,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:22,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:52:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:52:22,579 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:52:22,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 05:52:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:22,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 05:52:22,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:52:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:24,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:52:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953314286] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:52:28,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:52:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-12-02 05:52:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455326202] [2024-12-02 05:52:28,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:52:28,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 05:52:28,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:52:28,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 05:52:28,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 05:52:28,931 INFO L87 Difference]: Start difference. First operand 19991 states and 24723 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 05:52:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:52:49,451 INFO L93 Difference]: Finished difference Result 41260 states and 50245 transitions. [2024-12-02 05:52:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 05:52:49,452 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 106 [2024-12-02 05:52:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:52:49,481 INFO L225 Difference]: With dead ends: 41260 [2024-12-02 05:52:49,481 INFO L226 Difference]: Without dead ends: 36805 [2024-12-02 05:52:49,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 05:52:49,487 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 21657 mSDsluCounter, 32712 mSDsCounter, 0 mSdLazyCounter, 4155 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21657 SdHoareTripleChecker+Valid, 34338 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 05:52:49,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21657 Valid, 34338 Invalid, 4260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 4155 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 05:52:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36805 states. [2024-12-02 05:52:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36805 to 22361. [2024-12-02 05:52:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22359 states have (on average 1.231003175455074) internal successors, (27524), 22360 states have internal predecessors, (27524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:52:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 27524 transitions. [2024-12-02 05:52:51,522 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 27524 transitions. Word has length 106 [2024-12-02 05:52:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:52:51,522 INFO L471 AbstractCegarLoop]: Abstraction has 22361 states and 27524 transitions. [2024-12-02 05:52:51,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 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 05:52:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 27524 transitions. [2024-12-02 05:52:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 05:52:51,523 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:52:51,524 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:52:51,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 05:52:51,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 05:52:51,724 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:52:51,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:52:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-12-02 05:52:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:52:51,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546701500] [2024-12-02 05:52:51,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:52:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:52,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:52:52,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546701500] [2024-12-02 05:52:52,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546701500] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:52:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723094169] [2024-12-02 05:52:52,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:52:52,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:52:52,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:52:52,391 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:52:52,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 05:52:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:52:52,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 05:52:52,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:52:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:52:54,714 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:53:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723094169] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:53:00,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:53:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-12-02 05:53:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461212034] [2024-12-02 05:53:00,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:53:00,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 05:53:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:53:00,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 05:53:00,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 05:53:00,699 INFO L87 Difference]: Start difference. First operand 22361 states and 27524 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:53:26,531 INFO L93 Difference]: Finished difference Result 46849 states and 57429 transitions. [2024-12-02 05:53:26,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-02 05:53:26,532 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 05:53:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:53:26,560 INFO L225 Difference]: With dead ends: 46849 [2024-12-02 05:53:26,560 INFO L226 Difference]: Without dead ends: 38309 [2024-12-02 05:53:26,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-12-02 05:53:26,569 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 24837 mSDsluCounter, 27379 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24837 SdHoareTripleChecker+Valid, 28959 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 05:53:26,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24837 Valid, 28959 Invalid, 2781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [179 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 05:53:26,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2024-12-02 05:53:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 30081. [2024-12-02 05:53:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30081 states, 30079 states have (on average 1.228598025200306) internal successors, (36955), 30080 states have internal predecessors, (36955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30081 states to 30081 states and 36955 transitions. [2024-12-02 05:53:28,786 INFO L78 Accepts]: Start accepts. Automaton has 30081 states and 36955 transitions. Word has length 107 [2024-12-02 05:53:28,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:53:28,786 INFO L471 AbstractCegarLoop]: Abstraction has 30081 states and 36955 transitions. [2024-12-02 05:53:28,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 30081 states and 36955 transitions. [2024-12-02 05:53:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 05:53:28,788 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:53:28,788 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 05:53:28,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 05:53:28,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 05:53:28,988 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:53:28,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:53:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 05:53:28,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:53:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347541631] [2024-12-02 05:53:28,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:53:28,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:53:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:53:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:29,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:53:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347541631] [2024-12-02 05:53:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347541631] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:53:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600289247] [2024-12-02 05:53:29,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:53:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:53:29,976 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:53:29,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 05:53:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:53:30,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 05:53:30,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:53:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:31,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:53:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600289247] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:53:33,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:53:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-12-02 05:53:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476158278] [2024-12-02 05:53:33,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:53:33,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 05:53:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:53:33,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 05:53:33,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 05:53:33,738 INFO L87 Difference]: Start difference. First operand 30081 states and 36955 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:53:46,165 INFO L93 Difference]: Finished difference Result 95632 states and 116718 transitions. [2024-12-02 05:53:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 05:53:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 05:53:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:53:46,219 INFO L225 Difference]: With dead ends: 95632 [2024-12-02 05:53:46,219 INFO L226 Difference]: Without dead ends: 71221 [2024-12-02 05:53:46,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 05:53:46,238 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 29249 mSDsluCounter, 21743 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29249 SdHoareTripleChecker+Valid, 23294 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 05:53:46,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29249 Valid, 23294 Invalid, 2936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 05:53:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71221 states. [2024-12-02 05:53:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71221 to 40993. [2024-12-02 05:53:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40993 states, 40991 states have (on average 1.2232929179576004) internal successors, (50144), 40992 states have internal predecessors, (50144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40993 states to 40993 states and 50144 transitions. [2024-12-02 05:53:49,574 INFO L78 Accepts]: Start accepts. Automaton has 40993 states and 50144 transitions. Word has length 107 [2024-12-02 05:53:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:53:49,574 INFO L471 AbstractCegarLoop]: Abstraction has 40993 states and 50144 transitions. [2024-12-02 05:53:49,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:49,574 INFO L276 IsEmpty]: Start isEmpty. Operand 40993 states and 50144 transitions. [2024-12-02 05:53:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 05:53:49,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:53:49,575 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 05:53:49,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 05:53:49,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 05:53:49,775 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:53:49,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:53:49,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-12-02 05:53:49,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:53:49,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580875143] [2024-12-02 05:53:49,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:53:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:53:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:53:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:53:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580875143] [2024-12-02 05:53:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580875143] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:53:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219704546] [2024-12-02 05:53:50,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:53:50,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:53:50,227 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:53:50,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 05:53:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:53:50,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 05:53:50,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:53:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:51,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:53:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219704546] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:53:52,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:53:52,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-12-02 05:53:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681595860] [2024-12-02 05:53:52,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:53:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 05:53:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:53:52,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 05:53:52,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 05:53:52,659 INFO L87 Difference]: Start difference. First operand 40993 states and 50144 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:53:59,942 INFO L93 Difference]: Finished difference Result 102217 states and 123784 transitions. [2024-12-02 05:53:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 05:53:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 05:53:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:53:59,994 INFO L225 Difference]: With dead ends: 102217 [2024-12-02 05:53:59,994 INFO L226 Difference]: Without dead ends: 69746 [2024-12-02 05:54:00,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 05:54:00,011 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 19773 mSDsluCounter, 17312 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19773 SdHoareTripleChecker+Valid, 18884 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 05:54:00,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19773 Valid, 18884 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 05:54:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69746 states. [2024-12-02 05:54:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69746 to 40063. [2024-12-02 05:54:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40061 states have (on average 1.215795911235366) internal successors, (48706), 40062 states have internal predecessors, (48706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:54:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 48706 transitions. [2024-12-02 05:54:03,590 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 48706 transitions. Word has length 107 [2024-12-02 05:54:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:54:03,591 INFO L471 AbstractCegarLoop]: Abstraction has 40063 states and 48706 transitions. [2024-12-02 05:54:03,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:54:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 48706 transitions. [2024-12-02 05:54:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 05:54:03,592 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:54:03,592 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 05:54:03,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 05:54:03,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 05:54:03,792 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:54:03,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:54:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-12-02 05:54:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:54:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364183868] [2024-12-02 05:54:03,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:54:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:54:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:54:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:54:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364183868] [2024-12-02 05:54:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364183868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:54:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957511469] [2024-12-02 05:54:04,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:54:04,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:54:04,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:54:04,168 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:54:04,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 05:54:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:54:04,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 05:54:04,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:54:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:05,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:54:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957511469] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:54:06,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:54:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-12-02 05:54:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646737421] [2024-12-02 05:54:06,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:54:06,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 05:54:06,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:54:06,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 05:54:06,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 05:54:06,521 INFO L87 Difference]: Start difference. First operand 40063 states and 48706 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:54:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:54:14,047 INFO L93 Difference]: Finished difference Result 90523 states and 109147 transitions. [2024-12-02 05:54:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 05:54:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 05:54:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:54:14,089 INFO L225 Difference]: With dead ends: 90523 [2024-12-02 05:54:14,090 INFO L226 Difference]: Without dead ends: 55808 [2024-12-02 05:54:14,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 05:54:14,105 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 27459 mSDsluCounter, 17232 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27459 SdHoareTripleChecker+Valid, 18793 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 05:54:14,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27459 Valid, 18793 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 05:54:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55808 states. [2024-12-02 05:54:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55808 to 36391. [2024-12-02 05:54:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36391 states, 36389 states have (on average 1.2200390227816098) internal successors, (44396), 36390 states have internal predecessors, (44396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:54:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36391 states to 36391 states and 44396 transitions. [2024-12-02 05:54:17,867 INFO L78 Accepts]: Start accepts. Automaton has 36391 states and 44396 transitions. Word has length 107 [2024-12-02 05:54:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:54:17,868 INFO L471 AbstractCegarLoop]: Abstraction has 36391 states and 44396 transitions. [2024-12-02 05:54:17,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:54:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36391 states and 44396 transitions. [2024-12-02 05:54:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 05:54:17,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:54:17,869 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:54:17,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 05:54:18,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:54:18,070 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:54:18,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:54:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-12-02 05:54:18,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:54:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535267369] [2024-12-02 05:54:18,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:54:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:54:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:54:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:54:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535267369] [2024-12-02 05:54:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535267369] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:54:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661265661] [2024-12-02 05:54:19,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:54:19,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:54:19,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:54:19,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:54:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 05:54:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:54:19,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 05:54:19,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:54:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:22,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:54:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:54:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661265661] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:54:28,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:54:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 25] total 66 [2024-12-02 05:54:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538895554] [2024-12-02 05:54:28,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:54:28,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 05:54:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:54:28,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 05:54:28,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 05:54:28,970 INFO L87 Difference]: Start difference. First operand 36391 states and 44396 transitions. Second operand has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:57:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:57:18,195 INFO L93 Difference]: Finished difference Result 156945 states and 188718 transitions. [2024-12-02 05:57:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-12-02 05:57:18,196 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-12-02 05:57:18,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:57:18,319 INFO L225 Difference]: With dead ends: 156945 [2024-12-02 05:57:18,319 INFO L226 Difference]: Without dead ends: 145618 [2024-12-02 05:57:18,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90463 ImplicationChecksByTransitivity, 145.0s TimeCoverageRelationStatistics Valid=34766, Invalid=164596, Unknown=0, NotChecked=0, Total=199362 [2024-12-02 05:57:18,344 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 39669 mSDsluCounter, 33755 mSDsCounter, 0 mSdLazyCounter, 9135 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39669 SdHoareTripleChecker+Valid, 35463 SdHoareTripleChecker+Invalid, 9410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 9135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-12-02 05:57:18,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39669 Valid, 35463 Invalid, 9410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 9135 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-12-02 05:57:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145618 states. [2024-12-02 05:57:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145618 to 36776. [2024-12-02 05:57:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36776 states, 36774 states have (on average 1.2202643171806167) internal successors, (44874), 36775 states have internal predecessors, (44874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:57:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36776 states to 36776 states and 44874 transitions. [2024-12-02 05:57:23,352 INFO L78 Accepts]: Start accepts. Automaton has 36776 states and 44874 transitions. Word has length 108 [2024-12-02 05:57:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:57:23,353 INFO L471 AbstractCegarLoop]: Abstraction has 36776 states and 44874 transitions. [2024-12-02 05:57:23,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:57:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 36776 states and 44874 transitions. [2024-12-02 05:57:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 05:57:23,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:57:23,354 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:57:23,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 05:57:23,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 05:57:23,554 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:57:23,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:57:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash -516880752, now seen corresponding path program 1 times [2024-12-02 05:57:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:57:23,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051468778] [2024-12-02 05:57:23,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:57:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:57:25,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:57:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051468778] [2024-12-02 05:57:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051468778] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:57:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631506363] [2024-12-02 05:57:25,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:57:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:57:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:57:25,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:57:25,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 05:57:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:57:25,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 05:57:25,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:57:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:57:29,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:57:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:57:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631506363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:57:33,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:57:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 69 [2024-12-02 05:57:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648086541] [2024-12-02 05:57:33,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:57:33,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 05:57:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:57:33,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 05:57:33,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4295, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 05:57:33,616 INFO L87 Difference]: Start difference. First operand 36776 states and 44874 transitions. Second operand has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:59:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 05:59:42,250 INFO L93 Difference]: Finished difference Result 76383 states and 92219 transitions. [2024-12-02 05:59:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2024-12-02 05:59:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-12-02 05:59:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 05:59:42,291 INFO L225 Difference]: With dead ends: 76383 [2024-12-02 05:59:42,292 INFO L226 Difference]: Without dead ends: 57597 [2024-12-02 05:59:42,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76929 ImplicationChecksByTransitivity, 118.6s TimeCoverageRelationStatistics Valid=25310, Invalid=159160, Unknown=0, NotChecked=0, Total=184470 [2024-12-02 05:59:42,306 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 32529 mSDsluCounter, 44930 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32529 SdHoareTripleChecker+Valid, 46531 SdHoareTripleChecker+Invalid, 6316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 5914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 05:59:42,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32529 Valid, 46531 Invalid, 6316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [402 Valid, 5914 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 05:59:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57597 states. [2024-12-02 05:59:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57597 to 39770. [2024-12-02 05:59:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39770 states, 39768 states have (on average 1.218014484007242) internal successors, (48438), 39769 states have internal predecessors, (48438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:59:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39770 states to 39770 states and 48438 transitions. [2024-12-02 05:59:47,154 INFO L78 Accepts]: Start accepts. Automaton has 39770 states and 48438 transitions. Word has length 108 [2024-12-02 05:59:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 05:59:47,154 INFO L471 AbstractCegarLoop]: Abstraction has 39770 states and 48438 transitions. [2024-12-02 05:59:47,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:59:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 39770 states and 48438 transitions. [2024-12-02 05:59:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 05:59:47,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 05:59:47,155 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 05:59:47,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 05:59:47,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 05:59:47,356 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 05:59:47,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:59:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1776170548, now seen corresponding path program 1 times [2024-12-02 05:59:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:59:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212017822] [2024-12-02 05:59:47,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:59:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:59:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:59:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:59:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:59:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212017822] [2024-12-02 05:59:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212017822] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:59:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595101378] [2024-12-02 05:59:48,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:59:48,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:59:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:59:48,982 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:59:48,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 05:59:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:59:49,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 05:59:49,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:59:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:59:54,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:00:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:00:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595101378] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:00:00,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:00:00,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 24] total 71 [2024-12-02 06:00:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666246518] [2024-12-02 06:00:00,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:00:00,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 06:00:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:00:00,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 06:00:00,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4620, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 06:00:00,890 INFO L87 Difference]: Start difference. First operand 39770 states and 48438 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:00,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:02:00,317 INFO L93 Difference]: Finished difference Result 81301 states and 98037 transitions. [2024-12-02 06:02:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-12-02 06:02:00,317 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2024-12-02 06:02:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:02:00,375 INFO L225 Difference]: With dead ends: 81301 [2024-12-02 06:02:00,375 INFO L226 Difference]: Without dead ends: 65670 [2024-12-02 06:02:00,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53007 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=21487, Invalid=106319, Unknown=0, NotChecked=0, Total=127806 [2024-12-02 06:02:00,391 INFO L435 NwaCegarLoop]: 1673 mSDtfsCounter, 38956 mSDsluCounter, 49227 mSDsCounter, 0 mSdLazyCounter, 7118 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38956 SdHoareTripleChecker+Valid, 50900 SdHoareTripleChecker+Invalid, 7446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 7118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:02:00,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38956 Valid, 50900 Invalid, 7446 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [328 Valid, 7118 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-12-02 06:02:00,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65670 states. [2024-12-02 06:02:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65670 to 39782. [2024-12-02 06:02:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39782 states, 39780 states have (on average 1.2184766214177978) internal successors, (48471), 39781 states have internal predecessors, (48471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39782 states to 39782 states and 48471 transitions. [2024-12-02 06:02:07,055 INFO L78 Accepts]: Start accepts. Automaton has 39782 states and 48471 transitions. Word has length 108 [2024-12-02 06:02:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:02:07,055 INFO L471 AbstractCegarLoop]: Abstraction has 39782 states and 48471 transitions. [2024-12-02 06:02:07,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 39782 states and 48471 transitions. [2024-12-02 06:02:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 06:02:07,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:02:07,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:02:07,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 06:02:07,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:02:07,257 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:02:07,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 460945613, now seen corresponding path program 1 times [2024-12-02 06:02:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:07,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667113176] [2024-12-02 06:02:07,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:07,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667113176] [2024-12-02 06:02:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667113176] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:07,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:02:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303367831] [2024-12-02 06:02:07,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:07,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:02:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:07,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:02:07,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:02:07,373 INFO L87 Difference]: Start difference. First operand 39782 states and 48471 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:02:18,567 INFO L93 Difference]: Finished difference Result 43576 states and 54834 transitions. [2024-12-02 06:02:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:02:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-12-02 06:02:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:02:18,602 INFO L225 Difference]: With dead ends: 43576 [2024-12-02 06:02:18,602 INFO L226 Difference]: Without dead ends: 41284 [2024-12-02 06:02:18,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:02:18,608 INFO L435 NwaCegarLoop]: 743 mSDtfsCounter, 756 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:02:18,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 830 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 06:02:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41284 states. [2024-12-02 06:02:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41284 to 40533. [2024-12-02 06:02:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40533 states, 40531 states have (on average 1.2144778071106066) internal successors, (49224), 40532 states have internal predecessors, (49224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40533 states to 40533 states and 49224 transitions. [2024-12-02 06:02:25,152 INFO L78 Accepts]: Start accepts. Automaton has 40533 states and 49224 transitions. Word has length 138 [2024-12-02 06:02:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:02:25,152 INFO L471 AbstractCegarLoop]: Abstraction has 40533 states and 49224 transitions. [2024-12-02 06:02:25,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 40533 states and 49224 transitions. [2024-12-02 06:02:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 06:02:25,156 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:02:25,156 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:02:25,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 06:02:25,156 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:02:25,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash -699853685, now seen corresponding path program 1 times [2024-12-02 06:02:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904780105] [2024-12-02 06:02:25,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904780105] [2024-12-02 06:02:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904780105] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:02:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394197624] [2024-12-02 06:02:26,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:26,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:02:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:02:26,648 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:02:26,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 06:02:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:26,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 06:02:26,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:02:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 82 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:02:27,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:02:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 173 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:02:31,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394197624] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:02:31,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:02:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 39 [2024-12-02 06:02:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403615266] [2024-12-02 06:02:31,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:02:31,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 06:02:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:31,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 06:02:31,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 06:02:31,103 INFO L87 Difference]: Start difference. First operand 40533 states and 49224 transitions. Second operand has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:02:47,915 INFO L93 Difference]: Finished difference Result 79188 states and 96064 transitions. [2024-12-02 06:02:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 06:02:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 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 147 [2024-12-02 06:02:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:02:47,979 INFO L225 Difference]: With dead ends: 79188 [2024-12-02 06:02:47,979 INFO L226 Difference]: Without dead ends: 61896 [2024-12-02 06:02:47,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4383 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3039, Invalid=12213, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 06:02:47,996 INFO L435 NwaCegarLoop]: 1494 mSDtfsCounter, 30036 mSDsluCounter, 15539 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30036 SdHoareTripleChecker+Valid, 17033 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:02:47,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30036 Valid, 17033 Invalid, 1803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 06:02:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61896 states. [2024-12-02 06:02:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61896 to 35893. [2024-12-02 06:02:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35893 states, 35891 states have (on average 1.2061519601014181) internal successors, (43290), 35892 states have internal predecessors, (43290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35893 states to 35893 states and 43290 transitions. [2024-12-02 06:02:54,379 INFO L78 Accepts]: Start accepts. Automaton has 35893 states and 43290 transitions. Word has length 147 [2024-12-02 06:02:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:02:54,380 INFO L471 AbstractCegarLoop]: Abstraction has 35893 states and 43290 transitions. [2024-12-02 06:02:54,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:02:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 35893 states and 43290 transitions. [2024-12-02 06:02:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 06:02:54,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:02:54,382 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 06:02:54,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 06:02:54,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 06:02:54,583 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:02:54,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -686891035, now seen corresponding path program 1 times [2024-12-02 06:02:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825713469] [2024-12-02 06:02:54,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 79 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825713469] [2024-12-02 06:02:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825713469] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:02:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079153830] [2024-12-02 06:02:56,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:56,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:02:56,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:02:56,433 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:02:56,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_645a21dc-da2c-4613-a47e-bfe9a79b68a3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 06:02:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:56,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 06:02:56,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:03:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 93 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:00,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:03:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 61 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:03:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079153830] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:03:07,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:03:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 20] total 67 [2024-12-02 06:03:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604470134] [2024-12-02 06:03:07,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:03:07,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 06:03:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:03:07,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 06:03:07,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 06:03:07,853 INFO L87 Difference]: Start difference. First operand 35893 states and 43290 transitions. Second operand has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 67 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)