./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/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 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:37:14,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:37:14,548 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:37:14,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:37:14,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:37:14,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:37:14,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:37:14,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:37:14,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:37:14,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:37:14,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:37:14,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:37:14,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:37:14,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:37:14,577 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:37:14,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:37:14,578 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:37:14,578 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:14,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:14,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:14,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:37:14,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:37:14,580 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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/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 -> 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 [2024-12-02 08:37:14,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:37:14,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:37:14,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:37:14,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:37:14,816 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:37:14,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-12-02 08:37:17,449 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/data/74205fede/7105514c6802422cb6acda5e612ce34e/FLAGffbefbf34 [2024-12-02 08:37:17,845 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:37:17,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-12-02 08:37:17,871 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/data/74205fede/7105514c6802422cb6acda5e612ce34e/FLAGffbefbf34 [2024-12-02 08:37:17,885 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/data/74205fede/7105514c6802422cb6acda5e612ce34e [2024-12-02 08:37:17,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:37:17,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:37:17,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:17,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:37:17,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:37:17,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:17" (1/1) ... [2024-12-02 08:37:17,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c446b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:17, skipping insertion in model container [2024-12-02 08:37:17,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:17" (1/1) ... [2024-12-02 08:37:17,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:37:18,228 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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2024-12-02 08:37:18,294 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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2024-12-02 08:37:18,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:18,899 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:37:18,923 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2024-12-02 08:37:18,937 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_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2024-12-02 08:37:19,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:19,338 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:37:19,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19 WrapperNode [2024-12-02 08:37:19,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:19,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:19,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:37:19,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:37:19,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,606 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4979 [2024-12-02 08:37:19,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:19,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:37:19,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:37:19,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:37:19,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,799 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 08:37:19,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,900 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:37:19,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:37:19,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:37:19,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:37:19,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (1/1) ... [2024-12-02 08:37:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:20,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:20,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:37:20,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:37:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:37:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:37:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:37:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:37:20,118 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:37:20,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:37:24,417 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-12-02 08:37:24,418 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:37:24,445 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:37:24,445 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 08:37:24,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:24 BoogieIcfgContainer [2024-12-02 08:37:24,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:37:24,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:37:24,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:37:24,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:37:24,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:37:17" (1/3) ... [2024-12-02 08:37:24,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3775f686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:24, skipping insertion in model container [2024-12-02 08:37:24,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:19" (2/3) ... [2024-12-02 08:37:24,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3775f686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:24, skipping insertion in model container [2024-12-02 08:37:24,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:24" (3/3) ... [2024-12-02 08:37:24,455 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-12-02 08:37:24,469 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:37:24,472 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c that has 1 procedures, 872 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 08:37:24,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:37:24,556 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;@72c9bc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:37:24,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 08:37:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:37:24,568 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:24,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:24,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:24,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2024-12-02 08:37:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:24,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658682859] [2024-12-02 08:37:24,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:24,747 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 08:37:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:24,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658682859] [2024-12-02 08:37:24,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658682859] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:37:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060692909] [2024-12-02 08:37:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:24,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:37:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:24,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:37:24,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:37:24,770 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:24,832 INFO L93 Difference]: Finished difference Result 1720 states and 3272 transitions. [2024-12-02 08:37:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:37:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 08:37:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:24,846 INFO L225 Difference]: With dead ends: 1720 [2024-12-02 08:37:24,846 INFO L226 Difference]: Without dead ends: 806 [2024-12-02 08:37:24,851 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 08:37:24,853 INFO L435 NwaCegarLoop]: 1588 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, 1588 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 08:37:24,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-12-02 08:37:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-12-02 08:37:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-12-02 08:37:24,911 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-12-02 08:37:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:24,911 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-12-02 08:37:24,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-12-02 08:37:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:37:24,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:24,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:24,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:37:24,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:24,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2024-12-02 08:37:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264340495] [2024-12-02 08:37:24,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:25,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:25,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264340495] [2024-12-02 08:37:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264340495] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:25,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142853279] [2024-12-02 08:37:25,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:25,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:25,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:25,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:25,106 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:25,215 INFO L93 Difference]: Finished difference Result 840 states and 1575 transitions. [2024-12-02 08:37:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-12-02 08:37:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:25,219 INFO L225 Difference]: With dead ends: 840 [2024-12-02 08:37:25,219 INFO L226 Difference]: Without dead ends: 806 [2024-12-02 08:37:25,220 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 08:37:25,221 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:25,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6067 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-12-02 08:37:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-12-02 08:37:25,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-12-02 08:37:25,244 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-12-02 08:37:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:25,244 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-12-02 08:37:25,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-12-02 08:37:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 08:37:25,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:25,246 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] [2024-12-02 08:37:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:37:25,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:25,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2024-12-02 08:37:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145640430] [2024-12-02 08:37:25,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:25,363 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 08:37:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:25,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145640430] [2024-12-02 08:37:25,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145640430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:25,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:25,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908947077] [2024-12-02 08:37:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:25,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:25,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:25,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:25,365 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:25,497 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-12-02 08:37:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:37:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-12-02 08:37:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:25,502 INFO L225 Difference]: With dead ends: 986 [2024-12-02 08:37:25,502 INFO L226 Difference]: Without dead ends: 956 [2024-12-02 08:37:25,503 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 08:37:25,504 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:25,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:37:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-12-02 08:37:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-12-02 08:37:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-12-02 08:37:25,550 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-12-02 08:37:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:25,551 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-12-02 08:37:25,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-12-02 08:37:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 08:37:25,552 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:25,552 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] [2024-12-02 08:37:25,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:37:25,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:25,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2024-12-02 08:37:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:25,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823420419] [2024-12-02 08:37:25,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:25,632 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 08:37:25,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:25,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823420419] [2024-12-02 08:37:25,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823420419] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:25,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:25,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584467255] [2024-12-02 08:37:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:25,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:25,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:25,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:25,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:25,634 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:25,669 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-12-02 08:37:25,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-12-02 08:37:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:25,673 INFO L225 Difference]: With dead ends: 939 [2024-12-02 08:37:25,673 INFO L226 Difference]: Without dead ends: 881 [2024-12-02 08:37:25,674 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 08:37:25,675 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 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 08:37:25,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-12-02 08:37:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-12-02 08:37:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-12-02 08:37:25,699 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-12-02 08:37:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:25,699 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-12-02 08:37:25,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-12-02 08:37:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 08:37:25,700 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:25,700 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] [2024-12-02 08:37:25,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:37:25,701 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:25,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:25,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2024-12-02 08:37:25,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:25,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648198529] [2024-12-02 08:37:25,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:25,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:25,875 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 08:37:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648198529] [2024-12-02 08:37:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648198529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:25,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:25,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137709466] [2024-12-02 08:37:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:25,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:25,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:25,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:25,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:25,877 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:25,948 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-12-02 08:37:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-12-02 08:37:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:25,951 INFO L225 Difference]: With dead ends: 984 [2024-12-02 08:37:25,951 INFO L226 Difference]: Without dead ends: 881 [2024-12-02 08:37:25,952 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 08:37:25,952 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:25,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-12-02 08:37:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-12-02 08:37:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-12-02 08:37:25,967 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-12-02 08:37:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:25,967 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-12-02 08:37:25,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-12-02 08:37:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 08:37:25,968 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:25,969 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 08:37:25,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:37:25,969 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:25,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:25,969 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2024-12-02 08:37:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704603491] [2024-12-02 08:37:25,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,149 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 08:37:26,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704603491] [2024-12-02 08:37:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704603491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:37:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382518501] [2024-12-02 08:37:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:37:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:37:26,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:37:26,150 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 08:37:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,210 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-12-02 08:37:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:37:26,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 08:37:26,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,215 INFO L225 Difference]: With dead ends: 887 [2024-12-02 08:37:26,215 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 08:37:26,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:37:26,216 INFO L435 NwaCegarLoop]: 1502 mSDtfsCounter, 0 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10501 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:26,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10501 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 08:37:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-12-02 08:37:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-12-02 08:37:26,232 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-12-02 08:37:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,232 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-12-02 08:37:26,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 08:37:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-12-02 08:37:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:37:26,233 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,233 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 08:37:26,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:37:26,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2024-12-02 08:37:26,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412193496] [2024-12-02 08:37:26,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,272 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 08:37:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412193496] [2024-12-02 08:37:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412193496] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078871656] [2024-12-02 08:37:26,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:26,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:26,273 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,294 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-12-02 08:37:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:26,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,297 INFO L225 Difference]: With dead ends: 1007 [2024-12-02 08:37:26,297 INFO L226 Difference]: Without dead ends: 943 [2024-12-02 08:37:26,298 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 08:37:26,298 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 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 08:37:26,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 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 08:37:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-12-02 08:37:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-12-02 08:37:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-12-02 08:37:26,314 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-12-02 08:37:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,315 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-12-02 08:37:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-12-02 08:37:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:37:26,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,316 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 08:37:26,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:37:26,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2024-12-02 08:37:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748427272] [2024-12-02 08:37:26,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:26,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748427272] [2024-12-02 08:37:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748427272] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463889964] [2024-12-02 08:37:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:26,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:26,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:26,353 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,375 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-12-02 08:37:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,378 INFO L225 Difference]: With dead ends: 1243 [2024-12-02 08:37:26,378 INFO L226 Difference]: Without dead ends: 1080 [2024-12-02 08:37:26,379 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 08:37:26,379 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 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 08:37:26,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-12-02 08:37:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-12-02 08:37:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-12-02 08:37:26,396 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-12-02 08:37:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,396 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-12-02 08:37:26,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-12-02 08:37:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:37:26,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,397 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 08:37:26,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:37:26,397 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,397 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2024-12-02 08:37:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62456592] [2024-12-02 08:37:26,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,428 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 08:37:26,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62456592] [2024-12-02 08:37:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62456592] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749532663] [2024-12-02 08:37:26,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:26,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:26,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:26,429 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,455 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-12-02 08:37:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:26,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,459 INFO L225 Difference]: With dead ends: 1630 [2024-12-02 08:37:26,459 INFO L226 Difference]: Without dead ends: 1330 [2024-12-02 08:37:26,459 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 08:37:26,460 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 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 08:37:26,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-12-02 08:37:26,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-12-02 08:37:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-12-02 08:37:26,484 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-12-02 08:37:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,484 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-12-02 08:37:26,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 08:37:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-12-02 08:37:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 08:37:26,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,485 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] [2024-12-02 08:37:26,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:37:26,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2024-12-02 08:37:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802342473] [2024-12-02 08:37:26,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 08:37:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802342473] [2024-12-02 08:37:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802342473] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:26,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3887867] [2024-12-02 08:37:26,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:26,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:26,578 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,668 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2024-12-02 08:37:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 54 [2024-12-02 08:37:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,675 INFO L225 Difference]: With dead ends: 2960 [2024-12-02 08:37:26,676 INFO L226 Difference]: Without dead ends: 2558 [2024-12-02 08:37:26,676 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 08:37:26,677 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3039 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3160 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 08:37:26,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-12-02 08:37:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2024-12-02 08:37:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2024-12-02 08:37:26,713 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2024-12-02 08:37:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,713 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2024-12-02 08:37:26,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2024-12-02 08:37:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 08:37:26,715 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,715 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] [2024-12-02 08:37:26,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:37:26,715 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,715 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2024-12-02 08:37:26,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580702075] [2024-12-02 08:37:26,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 08:37:26,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:26,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580702075] [2024-12-02 08:37:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580702075] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:26,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:26,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457530887] [2024-12-02 08:37:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:26,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:26,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:26,818 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:26,909 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2024-12-02 08:37:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2024-12-02 08:37:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:26,915 INFO L225 Difference]: With dead ends: 3508 [2024-12-02 08:37:26,915 INFO L226 Difference]: Without dead ends: 2958 [2024-12-02 08:37:26,916 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 08:37:26,917 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:26,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-12-02 08:37:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2024-12-02 08:37:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2024-12-02 08:37:26,966 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2024-12-02 08:37:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:26,967 INFO L471 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2024-12-02 08:37:26,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2024-12-02 08:37:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 08:37:26,967 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:26,967 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] [2024-12-02 08:37:26,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:37:26,968 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:26,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2024-12-02 08:37:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833312279] [2024-12-02 08:37:26,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:37:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833312279] [2024-12-02 08:37:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833312279] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:27,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736766381] [2024-12-02 08:37:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:27,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:27,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:27,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:27,049 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:27,141 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2024-12-02 08:37:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 08:37:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:27,149 INFO L225 Difference]: With dead ends: 4056 [2024-12-02 08:37:27,149 INFO L226 Difference]: Without dead ends: 3506 [2024-12-02 08:37:27,151 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 08:37:27,151 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:27,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-12-02 08:37:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2024-12-02 08:37:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2024-12-02 08:37:27,208 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2024-12-02 08:37:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:27,208 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2024-12-02 08:37:27,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2024-12-02 08:37:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 08:37:27,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:27,210 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] [2024-12-02 08:37:27,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:37:27,210 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:27,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2024-12-02 08:37:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778767846] [2024-12-02 08:37:27,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:27,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778767846] [2024-12-02 08:37:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778767846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:27,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440563417] [2024-12-02 08:37:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:27,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:27,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:27,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:27,272 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:27,321 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2024-12-02 08:37:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:27,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-12-02 08:37:27,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:27,327 INFO L225 Difference]: With dead ends: 5424 [2024-12-02 08:37:27,328 INFO L226 Difference]: Without dead ends: 3102 [2024-12-02 08:37:27,330 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 08:37:27,330 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 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 08:37:27,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 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 08:37:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-12-02 08:37:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2024-12-02 08:37:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2024-12-02 08:37:27,386 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2024-12-02 08:37:27,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:27,386 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2024-12-02 08:37:27,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2024-12-02 08:37:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 08:37:27,387 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:27,387 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] [2024-12-02 08:37:27,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:37:27,387 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:27,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2024-12-02 08:37:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636705200] [2024-12-02 08:37:27,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:27,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636705200] [2024-12-02 08:37:27,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636705200] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:27,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:27,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849755896] [2024-12-02 08:37:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:27,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:27,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:27,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:27,448 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:27,484 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2024-12-02 08:37:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 08:37:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:27,489 INFO L225 Difference]: With dead ends: 4019 [2024-12-02 08:37:27,489 INFO L226 Difference]: Without dead ends: 1697 [2024-12-02 08:37:27,491 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 08:37:27,491 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 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 08:37:27,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-12-02 08:37:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2024-12-02 08:37:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2024-12-02 08:37:27,520 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2024-12-02 08:37:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:27,520 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2024-12-02 08:37:27,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2024-12-02 08:37:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 08:37:27,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:27,522 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] [2024-12-02 08:37:27,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:37:27,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2024-12-02 08:37:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843747604] [2024-12-02 08:37:27,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:27,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843747604] [2024-12-02 08:37:27,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843747604] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:27,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:27,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:37:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162045249] [2024-12-02 08:37:27,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:27,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:27,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:27,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:27,601 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 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 08:37:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:27,625 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2024-12-02 08:37:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:27,626 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 08:37:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:27,630 INFO L225 Difference]: With dead ends: 2143 [2024-12-02 08:37:27,630 INFO L226 Difference]: Without dead ends: 1241 [2024-12-02 08:37:27,631 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 08:37:27,632 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 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 08:37:27,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-12-02 08:37:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2024-12-02 08:37:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2024-12-02 08:37:27,657 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2024-12-02 08:37:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:27,657 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2024-12-02 08:37:27,657 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 08:37:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2024-12-02 08:37:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 08:37:27,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:27,658 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] [2024-12-02 08:37:27,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:37:27,659 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:27,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2024-12-02 08:37:27,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:27,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361957330] [2024-12-02 08:37:27,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:27,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361957330] [2024-12-02 08:37:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361957330] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:37:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301545517] [2024-12-02 08:37:28,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:28,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:28,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:37:28,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:37:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:28,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 08:37:28,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 08:37:29,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:37:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 08:37:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301545517] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:37:29,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:37:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-12-02 08:37:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887858302] [2024-12-02 08:37:29,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:37:29,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:37:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:29,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:37:29,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:37:29,376 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:31,494 INFO L93 Difference]: Finished difference Result 3541 states and 5099 transitions. [2024-12-02 08:37:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-02 08:37:31,495 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 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 08:37:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:31,503 INFO L225 Difference]: With dead ends: 3541 [2024-12-02 08:37:31,503 INFO L226 Difference]: Without dead ends: 3089 [2024-12-02 08:37:31,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 08:37:31,506 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 15728 mSDsluCounter, 7675 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15728 SdHoareTripleChecker+Valid, 9170 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:31,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15728 Valid, 9170 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:37:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2024-12-02 08:37:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2971. [2024-12-02 08:37:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.4277534523408555) internal successors, (4239), 2970 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4239 transitions. [2024-12-02 08:37:31,610 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4239 transitions. Word has length 59 [2024-12-02 08:37:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:31,610 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4239 transitions. [2024-12-02 08:37:31,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4239 transitions. [2024-12-02 08:37:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 08:37:31,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:31,612 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] [2024-12-02 08:37:31,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:37:31,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 08:37:31,812 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:31,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2024-12-02 08:37:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071524857] [2024-12-02 08:37:31,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071524857] [2024-12-02 08:37:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071524857] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:37:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866100716] [2024-12-02 08:37:33,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:33,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:33,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:37:33,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:37:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:33,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:37:33,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:33,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:37:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866100716] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:37:34,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:37:34,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-12-02 08:37:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560177145] [2024-12-02 08:37:34,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:37:34,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 08:37:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:34,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 08:37:34,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:37:34,518 INFO L87 Difference]: Start difference. First operand 2971 states and 4239 transitions. Second operand has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:35,026 INFO L93 Difference]: Finished difference Result 6894 states and 9256 transitions. [2024-12-02 08:37:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:37:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 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 60 [2024-12-02 08:37:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:35,037 INFO L225 Difference]: With dead ends: 6894 [2024-12-02 08:37:35,037 INFO L226 Difference]: Without dead ends: 5105 [2024-12-02 08:37:35,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 08:37:35,041 INFO L435 NwaCegarLoop]: 1491 mSDtfsCounter, 15174 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15174 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:35,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15174 Valid, 4762 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:37:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2024-12-02 08:37:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 5039. [2024-12-02 08:37:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 5037 states have (on average 1.345245185626365) internal successors, (6776), 5038 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 6776 transitions. [2024-12-02 08:37:35,181 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 6776 transitions. Word has length 60 [2024-12-02 08:37:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:35,181 INFO L471 AbstractCegarLoop]: Abstraction has 5039 states and 6776 transitions. [2024-12-02 08:37:35,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 6776 transitions. [2024-12-02 08:37:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 08:37:35,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:35,182 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:35,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:37:35,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 08:37:35,383 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:35,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1955522029, now seen corresponding path program 1 times [2024-12-02 08:37:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573407532] [2024-12-02 08:37:35,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573407532] [2024-12-02 08:37:35,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573407532] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:37:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401733339] [2024-12-02 08:37:35,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:35,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:37:35,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:37:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:35,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 08:37:35,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:37,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:37:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:37:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401733339] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:37:38,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:37:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 16] total 38 [2024-12-02 08:37:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252614413] [2024-12-02 08:37:38,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:37:38,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 08:37:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:38,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 08:37:38,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 08:37:38,924 INFO L87 Difference]: Start difference. First operand 5039 states and 6776 transitions. Second operand has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:00,026 INFO L93 Difference]: Finished difference Result 15921 states and 20643 transitions. [2024-12-02 08:38:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-12-02 08:38:00,027 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 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 60 [2024-12-02 08:38:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:00,041 INFO L225 Difference]: With dead ends: 15921 [2024-12-02 08:38:00,041 INFO L226 Difference]: Without dead ends: 11980 [2024-12-02 08:38:00,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11487 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=5606, Invalid=24844, Unknown=0, NotChecked=0, Total=30450 [2024-12-02 08:38:00,048 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 16301 mSDsluCounter, 17762 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16301 SdHoareTripleChecker+Valid, 19309 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:00,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16301 Valid, 19309 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 08:38:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2024-12-02 08:38:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 9110. [2024-12-02 08:38:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9108 states have (on average 1.3072024593763725) internal successors, (11906), 9109 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 11906 transitions. [2024-12-02 08:38:00,308 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 11906 transitions. Word has length 60 [2024-12-02 08:38:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:00,308 INFO L471 AbstractCegarLoop]: Abstraction has 9110 states and 11906 transitions. [2024-12-02 08:38:00,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 11906 transitions. [2024-12-02 08:38:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 08:38:00,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:00,309 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 08:38:00,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:38:00,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 08:38:00,509 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:00,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash -909285249, now seen corresponding path program 1 times [2024-12-02 08:38:00,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923492299] [2024-12-02 08:38:00,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:00,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923492299] [2024-12-02 08:38:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923492299] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:38:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396934723] [2024-12-02 08:38:00,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:00,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:00,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:00,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:38:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:38:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:00,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 08:38:00,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:02,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:38:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396934723] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:38:02,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:38:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-12-02 08:38:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498084233] [2024-12-02 08:38:02,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:38:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 08:38:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:02,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 08:38:02,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-12-02 08:38:02,917 INFO L87 Difference]: Start difference. First operand 9110 states and 11906 transitions. Second operand has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:04,489 INFO L93 Difference]: Finished difference Result 18270 states and 23432 transitions. [2024-12-02 08:38:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 08:38:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 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 08:38:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:04,499 INFO L225 Difference]: With dead ends: 18270 [2024-12-02 08:38:04,500 INFO L226 Difference]: Without dead ends: 10620 [2024-12-02 08:38:04,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=628, Invalid=2024, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 08:38:04,505 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 16831 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16831 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:04,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16831 Valid, 6515 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:38:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2024-12-02 08:38:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 10152. [2024-12-02 08:38:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 10150 states have (on average 1.2829556650246305) internal successors, (13022), 10151 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 13022 transitions. [2024-12-02 08:38:04,847 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 13022 transitions. Word has length 61 [2024-12-02 08:38:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:04,847 INFO L471 AbstractCegarLoop]: Abstraction has 10152 states and 13022 transitions. [2024-12-02 08:38:04,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 13022 transitions. [2024-12-02 08:38:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 08:38:04,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:04,848 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:38:04,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:38:05,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:05,049 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:05,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 705601745, now seen corresponding path program 1 times [2024-12-02 08:38:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804664850] [2024-12-02 08:38:05,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:05,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:05,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804664850] [2024-12-02 08:38:05,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804664850] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:38:05,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403103724] [2024-12-02 08:38:05,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:05,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:38:05,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:38:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:05,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:38:05,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:07,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:38:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403103724] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:38:10,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:38:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 16] total 45 [2024-12-02 08:38:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374127978] [2024-12-02 08:38:10,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:38:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 08:38:10,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:10,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 08:38:10,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 08:38:10,737 INFO L87 Difference]: Start difference. First operand 10152 states and 13022 transitions. Second operand has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 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 08:38:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:21,969 INFO L93 Difference]: Finished difference Result 15852 states and 20164 transitions. [2024-12-02 08:38:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-12-02 08:38:21,970 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 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 08:38:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:21,977 INFO L225 Difference]: With dead ends: 15852 [2024-12-02 08:38:21,978 INFO L226 Difference]: Without dead ends: 10736 [2024-12-02 08:38:21,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3777 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2761, Invalid=11281, Unknown=0, NotChecked=0, Total=14042 [2024-12-02 08:38:21,983 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 17444 mSDsluCounter, 24485 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17444 SdHoareTripleChecker+Valid, 26011 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:21,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17444 Valid, 26011 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:38:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2024-12-02 08:38:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 8486. [2024-12-02 08:38:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8486 states, 8484 states have (on average 1.2899575671852899) internal successors, (10944), 8485 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 10944 transitions. [2024-12-02 08:38:22,277 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 10944 transitions. Word has length 62 [2024-12-02 08:38:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:22,277 INFO L471 AbstractCegarLoop]: Abstraction has 8486 states and 10944 transitions. [2024-12-02 08:38:22,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 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 08:38:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 10944 transitions. [2024-12-02 08:38:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:38:22,277 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:22,277 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 08:38:22,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:38:22,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:22,478 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:22,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash 572872140, now seen corresponding path program 1 times [2024-12-02 08:38:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610534946] [2024-12-02 08:38:22,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:22,582 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 08:38:22,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610534946] [2024-12-02 08:38:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610534946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:38:22,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:38:22,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:38:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994660521] [2024-12-02 08:38:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:38:22,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:38:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:22,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:38:22,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:38:22,584 INFO L87 Difference]: Start difference. First operand 8486 states and 10944 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 08:38:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:28,282 INFO L93 Difference]: Finished difference Result 10741 states and 15253 transitions. [2024-12-02 08:38:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:38:28,283 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 08:38:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:28,288 INFO L225 Difference]: With dead ends: 10741 [2024-12-02 08:38:28,288 INFO L226 Difference]: Without dead ends: 9988 [2024-12-02 08:38:28,289 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 08:38:28,289 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 2317 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:28,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 762 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 08:38:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9988 states. [2024-12-02 08:38:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9988 to 9988. [2024-12-02 08:38:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9986 states have (on average 1.3076306829561386) internal successors, (13058), 9987 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 13058 transitions. [2024-12-02 08:38:28,609 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 13058 transitions. Word has length 67 [2024-12-02 08:38:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:28,609 INFO L471 AbstractCegarLoop]: Abstraction has 9988 states and 13058 transitions. [2024-12-02 08:38:28,609 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 08:38:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 13058 transitions. [2024-12-02 08:38:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 08:38:28,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:28,611 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 08:38:28,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:38:28,611 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:28,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 115923907, now seen corresponding path program 1 times [2024-12-02 08:38:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:28,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512748051] [2024-12-02 08:38:28,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:29,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512748051] [2024-12-02 08:38:29,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512748051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:38:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995719713] [2024-12-02 08:38:29,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:29,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:29,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:38:29,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:38:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:29,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:38:29,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:30,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:38:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995719713] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:38:31,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:38:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2024-12-02 08:38:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407592499] [2024-12-02 08:38:31,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:38:31,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 08:38:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:31,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 08:38:31,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 08:38:31,364 INFO L87 Difference]: Start difference. First operand 9988 states and 13058 transitions. Second operand has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 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 08:38:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:38:38,800 INFO L93 Difference]: Finished difference Result 28814 states and 36255 transitions. [2024-12-02 08:38:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-12-02 08:38:38,800 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 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 100 [2024-12-02 08:38:38,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:38:38,816 INFO L225 Difference]: With dead ends: 28814 [2024-12-02 08:38:38,816 INFO L226 Difference]: Without dead ends: 22797 [2024-12-02 08:38:38,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5353 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3030, Invalid=15060, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 08:38:38,823 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 20433 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20433 SdHoareTripleChecker+Valid, 19288 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:38:38,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20433 Valid, 19288 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:38:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2024-12-02 08:38:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 13367. [2024-12-02 08:38:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13365 states have (on average 1.2794612794612794) internal successors, (17100), 13366 states have internal predecessors, (17100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:38:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 17100 transitions. [2024-12-02 08:38:39,366 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 17100 transitions. Word has length 100 [2024-12-02 08:38:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:38:39,366 INFO L471 AbstractCegarLoop]: Abstraction has 13367 states and 17100 transitions. [2024-12-02 08:38:39,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 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 08:38:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 17100 transitions. [2024-12-02 08:38:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 08:38:39,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:38:39,368 INFO L218 NwaCegarLoop]: trace histogram [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 08:38:39,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:38:39,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:39,568 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:38:39,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:38:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1392468563, now seen corresponding path program 1 times [2024-12-02 08:38:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:38:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166239433] [2024-12-02 08:38:39,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:38:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166239433] [2024-12-02 08:38:40,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166239433] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:38:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105099678] [2024-12-02 08:38:40,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:40,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:40,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:38:40,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:38:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:40,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 08:38:40,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:43,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:38:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:49,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105099678] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:38:49,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:38:49,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 25] total 69 [2024-12-02 08:38:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526550377] [2024-12-02 08:38:49,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:38:49,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 08:38:49,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:49,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 08:38:49,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4305, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 08:38:49,440 INFO L87 Difference]: Start difference. First operand 13367 states and 17100 transitions. Second operand has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:41:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:41:34,190 INFO L93 Difference]: Finished difference Result 65545 states and 80558 transitions. [2024-12-02 08:41:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 372 states. [2024-12-02 08:41:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-12-02 08:41:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:41:34,229 INFO L225 Difference]: With dead ends: 65545 [2024-12-02 08:41:34,229 INFO L226 Difference]: Without dead ends: 57198 [2024-12-02 08:41:34,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80021 ImplicationChecksByTransitivity, 156.1s TimeCoverageRelationStatistics Valid=24221, Invalid=166311, Unknown=0, NotChecked=0, Total=190532 [2024-12-02 08:41:34,247 INFO L435 NwaCegarLoop]: 1718 mSDtfsCounter, 28034 mSDsluCounter, 39278 mSDsCounter, 0 mSdLazyCounter, 7038 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28034 SdHoareTripleChecker+Valid, 40996 SdHoareTripleChecker+Invalid, 7412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:41:34,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28034 Valid, 40996 Invalid, 7412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [374 Valid, 7038 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 08:41:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57198 states. [2024-12-02 08:41:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57198 to 17489. [2024-12-02 08:41:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17489 states, 17487 states have (on average 1.2637387773774804) internal successors, (22099), 17488 states have internal predecessors, (22099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:41:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 22099 transitions. [2024-12-02 08:41:35,467 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 22099 transitions. Word has length 101 [2024-12-02 08:41:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:41:35,468 INFO L471 AbstractCegarLoop]: Abstraction has 17489 states and 22099 transitions. [2024-12-02 08:41:35,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:41:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 22099 transitions. [2024-12-02 08:41:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 08:41:35,469 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:41:35,469 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:41:35,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 08:41:35,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 08:41:35,670 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:41:35,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:41:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 544820049, now seen corresponding path program 1 times [2024-12-02 08:41:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:41:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705730806] [2024-12-02 08:41:35,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:41:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:41:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:41:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:41:36,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:41:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705730806] [2024-12-02 08:41:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705730806] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:41:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017152575] [2024-12-02 08:41:36,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:41:36,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:41:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:41:36,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:41:36,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:41:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:41:36,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 08:41:36,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:41:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:41:39,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:41:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:41:41,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017152575] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:41:41,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:41:41,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-12-02 08:41:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677701340] [2024-12-02 08:41:41,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:41:41,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 08:41:41,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:41:41,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 08:41:41,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 08:41:41,956 INFO L87 Difference]: Start difference. First operand 17489 states and 22099 transitions. Second operand has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:00,544 INFO L93 Difference]: Finished difference Result 35503 states and 44148 transitions. [2024-12-02 08:42:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-12-02 08:42:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-12-02 08:42:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:00,562 INFO L225 Difference]: With dead ends: 35503 [2024-12-02 08:42:00,562 INFO L226 Difference]: Without dead ends: 25190 [2024-12-02 08:42:00,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=3447, Invalid=18015, Unknown=0, NotChecked=0, Total=21462 [2024-12-02 08:42:00,568 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 30870 mSDsluCounter, 24067 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30870 SdHoareTripleChecker+Valid, 25625 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:00,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30870 Valid, 25625 Invalid, 2735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 08:42:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25190 states. [2024-12-02 08:42:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25190 to 18618. [2024-12-02 08:42:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18618 states, 18616 states have (on average 1.2628384185646755) internal successors, (23509), 18617 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18618 states to 18618 states and 23509 transitions. [2024-12-02 08:42:01,961 INFO L78 Accepts]: Start accepts. Automaton has 18618 states and 23509 transitions. Word has length 101 [2024-12-02 08:42:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:01,961 INFO L471 AbstractCegarLoop]: Abstraction has 18618 states and 23509 transitions. [2024-12-02 08:42:01,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 18618 states and 23509 transitions. [2024-12-02 08:42:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 08:42:01,962 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:01,962 INFO L218 NwaCegarLoop]: trace histogram [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 08:42:01,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:42:02,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 08:42:02,163 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:02,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2091286795, now seen corresponding path program 1 times [2024-12-02 08:42:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910793067] [2024-12-02 08:42:02,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:42:02,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910793067] [2024-12-02 08:42:02,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910793067] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:42:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549668236] [2024-12-02 08:42:02,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:02,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:02,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:02,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:42:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:02,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:42:02,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:03,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549668236] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:05,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:42:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-12-02 08:42:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596169256] [2024-12-02 08:42:05,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:05,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 08:42:05,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:05,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 08:42:05,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:42:05,375 INFO L87 Difference]: Start difference. First operand 18618 states and 23509 transitions. Second operand has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:09,995 INFO L93 Difference]: Finished difference Result 38428 states and 47858 transitions. [2024-12-02 08:42:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 08:42:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-12-02 08:42:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:10,014 INFO L225 Difference]: With dead ends: 38428 [2024-12-02 08:42:10,014 INFO L226 Difference]: Without dead ends: 25759 [2024-12-02 08:42:10,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=780, Invalid=2880, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 08:42:10,022 INFO L435 NwaCegarLoop]: 1527 mSDtfsCounter, 14065 mSDsluCounter, 14141 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14065 SdHoareTripleChecker+Valid, 15668 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:10,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14065 Valid, 15668 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:42:10,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25759 states. [2024-12-02 08:42:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25759 to 16080. [2024-12-02 08:42:11,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16078 states have (on average 1.2641497698718747) internal successors, (20325), 16079 states have internal predecessors, (20325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 20325 transitions. [2024-12-02 08:42:11,318 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 20325 transitions. Word has length 101 [2024-12-02 08:42:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:11,318 INFO L471 AbstractCegarLoop]: Abstraction has 16080 states and 20325 transitions. [2024-12-02 08:42:11,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:11,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 20325 transitions. [2024-12-02 08:42:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:42:11,320 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:11,320 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:11,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:42:11,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 08:42:11,520 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:42:11,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:11,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1624422541, now seen corresponding path program 1 times [2024-12-02 08:42:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:42:11,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604482858] [2024-12-02 08:42:11,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:11,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:42:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:42:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604482858] [2024-12-02 08:42:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604482858] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:42:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367056630] [2024-12-02 08:42:12,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:12,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:12,584 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:12,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:42:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:12,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 08:42:12,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:16,184 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:16,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367056630] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:21,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:42:21,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 68 [2024-12-02 08:42:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640068214] [2024-12-02 08:42:21,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:21,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 08:42:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:42:21,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 08:42:21,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=4178, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 08:42:21,397 INFO L87 Difference]: Start difference. First operand 16080 states and 20325 transitions. Second operand has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:53,339 INFO L93 Difference]: Finished difference Result 31819 states and 39384 transitions. [2024-12-02 08:43:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-12-02 08:43:53,340 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 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 102 [2024-12-02 08:43:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:53,356 INFO L225 Difference]: With dead ends: 31819 [2024-12-02 08:43:53,356 INFO L226 Difference]: Without dead ends: 22826 [2024-12-02 08:43:53,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25356 ImplicationChecksByTransitivity, 87.7s TimeCoverageRelationStatistics Valid=9867, Invalid=64389, Unknown=0, NotChecked=0, Total=74256 [2024-12-02 08:43:53,364 INFO L435 NwaCegarLoop]: 1650 mSDtfsCounter, 33417 mSDsluCounter, 39370 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33417 SdHoareTripleChecker+Valid, 41020 SdHoareTripleChecker+Invalid, 5773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:53,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33417 Valid, 41020 Invalid, 5773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [292 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 08:43:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22826 states. [2024-12-02 08:43:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22826 to 19112. [2024-12-02 08:43:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19112 states, 19110 states have (on average 1.2545787545787546) internal successors, (23975), 19111 states have internal predecessors, (23975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19112 states to 19112 states and 23975 transitions. [2024-12-02 08:43:55,185 INFO L78 Accepts]: Start accepts. Automaton has 19112 states and 23975 transitions. Word has length 102 [2024-12-02 08:43:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:55,185 INFO L471 AbstractCegarLoop]: Abstraction has 19112 states and 23975 transitions. [2024-12-02 08:43:55,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19112 states and 23975 transitions. [2024-12-02 08:43:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 08:43:55,186 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:55,186 INFO L218 NwaCegarLoop]: trace histogram [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 08:43:55,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 08:43:55,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 08:43:55,387 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:43:55,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1670855763, now seen corresponding path program 1 times [2024-12-02 08:43:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:43:55,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647458227] [2024-12-02 08:43:55,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:43:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:56,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:43:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647458227] [2024-12-02 08:43:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647458227] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:43:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612359231] [2024-12-02 08:43:56,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:56,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:56,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:56,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:56,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:43:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:56,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 08:43:56,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:59,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:03,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612359231] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:03,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 21] total 62 [2024-12-02 08:44:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610858653] [2024-12-02 08:44:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:03,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 08:44:03,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:03,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 08:44:03,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3392, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 08:44:03,445 INFO L87 Difference]: Start difference. First operand 19112 states and 23975 transitions. Second operand has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 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 08:44:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:22,194 INFO L93 Difference]: Finished difference Result 28535 states and 35349 transitions. [2024-12-02 08:44:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-12-02 08:44:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 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 102 [2024-12-02 08:44:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:22,209 INFO L225 Difference]: With dead ends: 28535 [2024-12-02 08:44:22,209 INFO L226 Difference]: Without dead ends: 22732 [2024-12-02 08:44:22,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5867 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=3437, Invalid=18025, Unknown=0, NotChecked=0, Total=21462 [2024-12-02 08:44:22,214 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 10836 mSDsluCounter, 33294 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10836 SdHoareTripleChecker+Valid, 34863 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:22,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10836 Valid, 34863 Invalid, 2833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2752 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 08:44:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2024-12-02 08:44:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 20625. [2024-12-02 08:44:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20625 states, 20623 states have (on average 1.2486059254230713) internal successors, (25750), 20624 states have internal predecessors, (25750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20625 states to 20625 states and 25750 transitions. [2024-12-02 08:44:24,298 INFO L78 Accepts]: Start accepts. Automaton has 20625 states and 25750 transitions. Word has length 102 [2024-12-02 08:44:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:24,298 INFO L471 AbstractCegarLoop]: Abstraction has 20625 states and 25750 transitions. [2024-12-02 08:44:24,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 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 08:44:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 20625 states and 25750 transitions. [2024-12-02 08:44:24,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 08:44:24,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:24,299 INFO L218 NwaCegarLoop]: trace histogram [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 08:44:24,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:44:24,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 08:44:24,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:24,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1363694125, now seen corresponding path program 1 times [2024-12-02 08:44:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774595628] [2024-12-02 08:44:24,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:24,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774595628] [2024-12-02 08:44:24,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774595628] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309343733] [2024-12-02 08:44:24,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:24,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:24,883 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:24,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:44:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:25,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 08:44:25,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:26,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309343733] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:29,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2024-12-02 08:44:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657402255] [2024-12-02 08:44:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:29,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 08:44:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:29,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 08:44:29,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 08:44:29,643 INFO L87 Difference]: Start difference. First operand 20625 states and 25750 transitions. Second operand has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:40,197 INFO L93 Difference]: Finished difference Result 56694 states and 69916 transitions. [2024-12-02 08:44:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 08:44:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 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 08:44:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:40,225 INFO L225 Difference]: With dead ends: 56694 [2024-12-02 08:44:40,225 INFO L226 Difference]: Without dead ends: 40650 [2024-12-02 08:44:40,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2095 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1857, Invalid=7845, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 08:44:40,235 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 27570 mSDsluCounter, 23574 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27570 SdHoareTripleChecker+Valid, 25127 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:40,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27570 Valid, 25127 Invalid, 1845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 08:44:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40650 states. [2024-12-02 08:44:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40650 to 21268. [2024-12-02 08:44:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21266 states have (on average 1.2464497319665193) internal successors, (26507), 21267 states have internal predecessors, (26507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 26507 transitions. [2024-12-02 08:44:42,863 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 26507 transitions. Word has length 103 [2024-12-02 08:44:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:42,864 INFO L471 AbstractCegarLoop]: Abstraction has 21268 states and 26507 transitions. [2024-12-02 08:44:42,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:44:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 26507 transitions. [2024-12-02 08:44:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:44:42,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:42,864 INFO L218 NwaCegarLoop]: trace histogram [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 08:44:42,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:44:43,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 08:44:43,065 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:44:43,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash -607646385, now seen corresponding path program 1 times [2024-12-02 08:44:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:44:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358878489] [2024-12-02 08:44:43,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:44:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:45,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:44:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358878489] [2024-12-02 08:44:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358878489] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267349475] [2024-12-02 08:44:45,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:45,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:45,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:45,622 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:45,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:44:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:45,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 08:44:45,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:48,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:50,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267349475] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:50,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:50,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 19, 18] total 63 [2024-12-02 08:44:50,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279968657] [2024-12-02 08:44:50,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:50,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 08:44:50,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:44:50,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 08:44:50,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3651, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 08:44:50,634 INFO L87 Difference]: Start difference. First operand 21268 states and 26507 transitions. Second operand has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:45:16,305 INFO L93 Difference]: Finished difference Result 35793 states and 44166 transitions. [2024-12-02 08:45:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-12-02 08:45:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 08:45:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:45:16,324 INFO L225 Difference]: With dead ends: 35793 [2024-12-02 08:45:16,324 INFO L226 Difference]: Without dead ends: 27194 [2024-12-02 08:45:16,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5790 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=3580, Invalid=18770, Unknown=0, NotChecked=0, Total=22350 [2024-12-02 08:45:16,331 INFO L435 NwaCegarLoop]: 1597 mSDtfsCounter, 24572 mSDsluCounter, 45669 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24572 SdHoareTripleChecker+Valid, 47266 SdHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:45:16,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24572 Valid, 47266 Invalid, 4062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 08:45:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2024-12-02 08:45:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24120. [2024-12-02 08:45:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24120 states, 24118 states have (on average 1.2413135417530474) internal successors, (29938), 24119 states have internal predecessors, (29938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24120 states to 24120 states and 29938 transitions. [2024-12-02 08:45:19,274 INFO L78 Accepts]: Start accepts. Automaton has 24120 states and 29938 transitions. Word has length 104 [2024-12-02 08:45:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:45:19,274 INFO L471 AbstractCegarLoop]: Abstraction has 24120 states and 29938 transitions. [2024-12-02 08:45:19,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:45:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24120 states and 29938 transitions. [2024-12-02 08:45:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:45:19,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:45:19,276 INFO L218 NwaCegarLoop]: trace histogram [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 08:45:19,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 08:45:19,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 08:45:19,476 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:45:19,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:45:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1929475957, now seen corresponding path program 1 times [2024-12-02 08:45:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:45:19,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890263269] [2024-12-02 08:45:19,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:45:19,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:45:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:45:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:45:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:45:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890263269] [2024-12-02 08:45:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890263269] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:45:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131452997] [2024-12-02 08:45:20,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:45:20,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:45:20,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:45:20,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:45:20,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 08:45:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:45:21,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 08:45:21,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:45:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:45:24,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:45:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 31 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:45:33,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131452997] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:45:33,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:45:33,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 27] total 77 [2024-12-02 08:45:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433654665] [2024-12-02 08:45:33,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:45:33,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 08:45:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:45:33,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 08:45:33,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=5446, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 08:45:33,559 INFO L87 Difference]: Start difference. First operand 24120 states and 29938 transitions. Second operand has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:46:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:46:43,943 INFO L93 Difference]: Finished difference Result 43838 states and 53621 transitions. [2024-12-02 08:46:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-12-02 08:46:43,944 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 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 08:46:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:46:43,967 INFO L225 Difference]: With dead ends: 43838 [2024-12-02 08:46:43,967 INFO L226 Difference]: Without dead ends: 28770 [2024-12-02 08:46:43,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16626 ImplicationChecksByTransitivity, 65.9s TimeCoverageRelationStatistics Valid=7757, Invalid=45373, Unknown=0, NotChecked=0, Total=53130 [2024-12-02 08:46:43,975 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 38469 mSDsluCounter, 45406 mSDsCounter, 0 mSdLazyCounter, 6107 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38469 SdHoareTripleChecker+Valid, 47023 SdHoareTripleChecker+Invalid, 6310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 6107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:46:43,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38469 Valid, 47023 Invalid, 6310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [203 Valid, 6107 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 08:46:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28770 states. [2024-12-02 08:46:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28770 to 23432. [2024-12-02 08:46:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23432 states, 23430 states have (on average 1.2444302176696542) internal successors, (29157), 23431 states have internal predecessors, (29157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:46:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23432 states to 23432 states and 29157 transitions. [2024-12-02 08:46:46,998 INFO L78 Accepts]: Start accepts. Automaton has 23432 states and 29157 transitions. Word has length 104 [2024-12-02 08:46:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:46:46,998 INFO L471 AbstractCegarLoop]: Abstraction has 23432 states and 29157 transitions. [2024-12-02 08:46:46,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:46:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23432 states and 29157 transitions. [2024-12-02 08:46:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 08:46:47,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:46:47,000 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 08:46:47,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 08:46:47,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:47,201 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:46:47,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2034606157, now seen corresponding path program 1 times [2024-12-02 08:46:47,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:47,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874772946] [2024-12-02 08:46:47,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:47,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:47,336 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 08:46:47,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874772946] [2024-12-02 08:46:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874772946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:46:47,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:46:47,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:46:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760480997] [2024-12-02 08:46:47,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:46:47,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:46:47,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:47,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:46:47,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:46:47,337 INFO L87 Difference]: Start difference. First operand 23432 states and 29157 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 08:46:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:46:53,971 INFO L93 Difference]: Finished difference Result 27226 states and 35520 transitions. [2024-12-02 08:46:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:46:53,971 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 08:46:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:46:53,988 INFO L225 Difference]: With dead ends: 27226 [2024-12-02 08:46:53,988 INFO L226 Difference]: Without dead ends: 24934 [2024-12-02 08:46:53,992 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 08:46:53,992 INFO L435 NwaCegarLoop]: 743 mSDtfsCounter, 771 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:46:53,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 826 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 08:46:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24934 states. [2024-12-02 08:46:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24934 to 24183. [2024-12-02 08:46:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24183 states, 24181 states have (on average 1.2369215499772548) internal successors, (29910), 24182 states have internal predecessors, (29910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:46:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24183 states to 24183 states and 29910 transitions. [2024-12-02 08:46:57,053 INFO L78 Accepts]: Start accepts. Automaton has 24183 states and 29910 transitions. Word has length 138 [2024-12-02 08:46:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:46:57,053 INFO L471 AbstractCegarLoop]: Abstraction has 24183 states and 29910 transitions. [2024-12-02 08:46:57,053 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 08:46:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 24183 states and 29910 transitions. [2024-12-02 08:46:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 08:46:57,055 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:46:57,055 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:46:57,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 08:46:57,055 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:46:57,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash -182996407, now seen corresponding path program 1 times [2024-12-02 08:46:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639999234] [2024-12-02 08:46:57,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 71 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 08:46:58,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639999234] [2024-12-02 08:46:58,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639999234] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:58,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279168467] [2024-12-02 08:46:58,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:58,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:46:58,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:46:58,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 08:46:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:58,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:46:58,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 78 proven. 143 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 08:46:59,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 37 proven. 184 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 08:47:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279168467] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:47:01,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:47:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 45 [2024-12-02 08:47:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349576743] [2024-12-02 08:47:01,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:47:01,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 08:47:01,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:01,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 08:47:01,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 08:47:01,546 INFO L87 Difference]: Start difference. First operand 24183 states and 29910 transitions. Second operand has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:47:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:13,400 INFO L93 Difference]: Finished difference Result 39476 states and 48521 transitions. [2024-12-02 08:47:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-12-02 08:47:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 0 states have call successors, (0), 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 140 [2024-12-02 08:47:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:13,419 INFO L225 Difference]: With dead ends: 39476 [2024-12-02 08:47:13,419 INFO L226 Difference]: Without dead ends: 25302 [2024-12-02 08:47:13,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5152 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2944, Invalid=16516, Unknown=0, NotChecked=0, Total=19460 [2024-12-02 08:47:13,426 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 20296 mSDsluCounter, 29104 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20296 SdHoareTripleChecker+Valid, 30627 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:13,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20296 Valid, 30627 Invalid, 2761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:47:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25302 states. [2024-12-02 08:47:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25302 to 24175. [2024-12-02 08:47:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24175 states, 24173 states have (on average 1.2284366855582676) internal successors, (29695), 24174 states have internal predecessors, (29695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:47:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24175 states to 24175 states and 29695 transitions. [2024-12-02 08:47:16,633 INFO L78 Accepts]: Start accepts. Automaton has 24175 states and 29695 transitions. Word has length 140 [2024-12-02 08:47:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:16,634 INFO L471 AbstractCegarLoop]: Abstraction has 24175 states and 29695 transitions. [2024-12-02 08:47:16,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.760869565217392) internal successors, (357), 45 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:47:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 24175 states and 29695 transitions. [2024-12-02 08:47:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:47:16,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:16,635 INFO L218 NwaCegarLoop]: trace histogram [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 08:47:16,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 08:47:16,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:16,836 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:47:16,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 78621841, now seen corresponding path program 2 times [2024-12-02 08:47:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239631778] [2024-12-02 08:47:16,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:47:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:16,869 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:47:16,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:47:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 56 proven. 177 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 08:47:17,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239631778] [2024-12-02 08:47:17,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239631778] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:17,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482355673] [2024-12-02 08:47:17,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:47:17,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:17,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:17,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 08:47:17,688 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:47:17,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:47:17,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 08:47:17,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 51 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:19,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 45 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482355673] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:47:24,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:47:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 19] total 60 [2024-12-02 08:47:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866343112] [2024-12-02 08:47:24,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:47:24,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 08:47:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:24,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 08:47:24,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3238, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 08:47:24,484 INFO L87 Difference]: Start difference. First operand 24175 states and 29695 transitions. Second operand has 60 states, 60 states have (on average 6.583333333333333) internal successors, (395), 60 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:48:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:48:34,446 INFO L93 Difference]: Finished difference Result 86896 states and 105367 transitions. [2024-12-02 08:48:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2024-12-02 08:48:34,446 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.583333333333333) internal successors, (395), 60 states have internal predecessors, (395), 0 states have call successors, (0), 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 141 [2024-12-02 08:48:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:48:34,505 INFO L225 Difference]: With dead ends: 86896 [2024-12-02 08:48:34,505 INFO L226 Difference]: Without dead ends: 70609 [2024-12-02 08:48:34,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56714 ImplicationChecksByTransitivity, 52.7s TimeCoverageRelationStatistics Valid=19397, Invalid=133093, Unknown=0, NotChecked=0, Total=152490 [2024-12-02 08:48:34,520 INFO L435 NwaCegarLoop]: 1722 mSDtfsCounter, 27922 mSDsluCounter, 45159 mSDsCounter, 0 mSdLazyCounter, 8861 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27922 SdHoareTripleChecker+Valid, 46881 SdHoareTripleChecker+Invalid, 9200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 8861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:48:34,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27922 Valid, 46881 Invalid, 9200 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [339 Valid, 8861 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 08:48:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70609 states. [2024-12-02 08:48:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70609 to 34159. [2024-12-02 08:48:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34159 states, 34157 states have (on average 1.2182275961003601) internal successors, (41611), 34158 states have internal predecessors, (41611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:48:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34159 states to 34159 states and 41611 transitions. [2024-12-02 08:48:40,412 INFO L78 Accepts]: Start accepts. Automaton has 34159 states and 41611 transitions. Word has length 141 [2024-12-02 08:48:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:48:40,413 INFO L471 AbstractCegarLoop]: Abstraction has 34159 states and 41611 transitions. [2024-12-02 08:48:40,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.583333333333333) internal successors, (395), 60 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:48:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 34159 states and 41611 transitions. [2024-12-02 08:48:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 08:48:40,414 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:48:40,414 INFO L218 NwaCegarLoop]: trace histogram [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 08:48:40,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 08:48:40,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:40,614 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:48:40,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 785881353, now seen corresponding path program 1 times [2024-12-02 08:48:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384846512] [2024-12-02 08:48:40,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 87 proven. 146 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 08:48:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384846512] [2024-12-02 08:48:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384846512] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:48:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164855512] [2024-12-02 08:48:41,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:41,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:48:41,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:48:41,413 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:48:41,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 08:48:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:41,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 08:48:41,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 65 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:48:44,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:48:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 57 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:48:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164855512] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:48:50,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:48:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 23] total 63 [2024-12-02 08:48:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875761708] [2024-12-02 08:48:50,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:48:50,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 08:48:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:50,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 08:48:50,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=3588, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 08:48:50,194 INFO L87 Difference]: Start difference. First operand 34159 states and 41611 transitions. Second operand has 63 states, 63 states have (on average 6.222222222222222) internal successors, (392), 63 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:49:36,867 INFO L93 Difference]: Finished difference Result 88481 states and 107105 transitions. [2024-12-02 08:49:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-12-02 08:49:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.222222222222222) internal successors, (392), 63 states have internal predecessors, (392), 0 states have call successors, (0), 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 141 [2024-12-02 08:49:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:49:36,924 INFO L225 Difference]: With dead ends: 88481 [2024-12-02 08:49:36,924 INFO L226 Difference]: Without dead ends: 63562 [2024-12-02 08:49:36,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13682 ImplicationChecksByTransitivity, 34.4s TimeCoverageRelationStatistics Valid=7235, Invalid=35407, Unknown=0, NotChecked=0, Total=42642 [2024-12-02 08:49:36,937 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 27695 mSDsluCounter, 42976 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27695 SdHoareTripleChecker+Valid, 44493 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:49:36,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27695 Valid, 44493 Invalid, 4330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [201 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 08:49:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63562 states. [2024-12-02 08:49:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63562 to 53618. [2024-12-02 08:49:47,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53618 states, 53616 states have (on average 1.214600119367353) internal successors, (65122), 53617 states have internal predecessors, (65122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53618 states to 53618 states and 65122 transitions. [2024-12-02 08:49:47,425 INFO L78 Accepts]: Start accepts. Automaton has 53618 states and 65122 transitions. Word has length 141 [2024-12-02 08:49:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:49:47,425 INFO L471 AbstractCegarLoop]: Abstraction has 53618 states and 65122 transitions. [2024-12-02 08:49:47,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.222222222222222) internal successors, (392), 63 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:49:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 53618 states and 65122 transitions. [2024-12-02 08:49:47,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 08:49:47,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:49:47,426 INFO L218 NwaCegarLoop]: trace histogram [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, 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 08:49:47,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 08:49:47,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 08:49:47,627 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:49:47,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:49:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 890145061, now seen corresponding path program 1 times [2024-12-02 08:49:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:49:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881397314] [2024-12-02 08:49:47,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:49:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 37 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:49:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:49:48,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881397314] [2024-12-02 08:49:48,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881397314] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:49:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829189066] [2024-12-02 08:49:48,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:49:48,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:49:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:49:48,955 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:49:48,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d59a6d-b801-4dda-bb80-1bdc6a80ff3a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 08:49:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:49:49,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-12-02 08:49:49,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:49:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 37 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:49:54,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:50:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 37 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:50:04,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829189066] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:50:04,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:50:04,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 30] total 83 [2024-12-02 08:50:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380197090] [2024-12-02 08:50:04,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:50:04,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-12-02 08:50:04,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:50:04,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-12-02 08:50:04,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=6166, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 08:50:04,139 INFO L87 Difference]: Start difference. First operand 53618 states and 65122 transitions. Second operand has 83 states, 83 states have (on average 4.771084337349397) internal successors, (396), 83 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:50:16,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:50:53,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]