./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/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 f34e139d311e566fb184ea47633b96986afa15e7a6ae2ebeede6340c715d2189 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:14:55,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:14:55,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:14:55,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:14:55,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:14:55,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:14:55,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:14:55,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:14:55,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:14:55,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:14:55,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:14:55,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:14:55,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:14:55,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:14:55,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:14:55,713 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:14:55,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:14:55,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:14:55,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:14:55,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:14:55,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:14:55,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:14:55,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:14:55,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:14:55,715 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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/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 -> f34e139d311e566fb184ea47633b96986afa15e7a6ae2ebeede6340c715d2189 [2024-12-02 15:14:55,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:14:55,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:14:55,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:14:55,965 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:14:55,965 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:14:55,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-12-02 15:14:58,579 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/data/279c5ccfd/419c8f7cc96b4058b8bf66bff30e6cc0/FLAGf6a982be8 [2024-12-02 15:14:58,970 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:14:58,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-12-02 15:14:58,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/data/279c5ccfd/419c8f7cc96b4058b8bf66bff30e6cc0/FLAGf6a982be8 [2024-12-02 15:14:59,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/data/279c5ccfd/419c8f7cc96b4058b8bf66bff30e6cc0 [2024-12-02 15:14:59,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:14:59,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:14:59,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:14:59,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:14:59,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:14:59,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:59" (1/1) ... [2024-12-02 15:14:59,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f112930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:14:59, skipping insertion in model container [2024-12-02 15:14:59,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:14:59" (1/1) ... [2024-12-02 15:14:59,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:14:59,443 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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2024-12-02 15:14:59,493 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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2024-12-02 15:15:00,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:15:00,070 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:15:00,095 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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[8653,8666] [2024-12-02 15:15:00,105 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_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c[14208,14221] [2024-12-02 15:15:00,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:15:00,517 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:15:00,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00 WrapperNode [2024-12-02 15:15:00,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:15:00,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:15:00,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:15:00,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:15:00,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,798 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5038 [2024-12-02 15:15:00,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:15:00,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:15:00,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:15:00,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:15:00,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,957 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 15:15:00,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:00,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,149 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:15:01,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:15:01,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:15:01,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:15:01,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (1/1) ... [2024-12-02 15:15:01,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:15:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:01,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:15:01,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:15:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:15:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:15:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:15:01,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:15:01,310 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:15:01,311 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:15:05,496 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-12-02 15:15:05,496 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:15:05,524 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:15:05,524 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 15:15:05,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:15:05 BoogieIcfgContainer [2024-12-02 15:15:05,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:15:05,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:15:05,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:15:05,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:15:05,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:14:59" (1/3) ... [2024-12-02 15:15:05,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379f5131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:15:05, skipping insertion in model container [2024-12-02 15:15:05,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:15:00" (2/3) ... [2024-12-02 15:15:05,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379f5131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:15:05, skipping insertion in model container [2024-12-02 15:15:05,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:15:05" (3/3) ... [2024-12-02 15:15:05,534 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c [2024-12-02 15:15:05,545 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:15:05,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals+Problem12_label01.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 15:15:05,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:15:05,623 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;@6f9569db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:15:05,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 15:15:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:05,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 15:15:05,634 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:05,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:05,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1782369673, now seen corresponding path program 1 times [2024-12-02 15:15:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403194825] [2024-12-02 15:15:05,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:05,839 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 15:15:05,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403194825] [2024-12-02 15:15:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403194825] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:05,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:05,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:15:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363619007] [2024-12-02 15:15:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:05,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:15:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:05,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:15:05,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:15:05,864 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:05,932 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-12-02 15:15:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:15:05,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 15:15:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:05,946 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 15:15:05,946 INFO L226 Difference]: Without dead ends: 820 [2024-12-02 15:15:05,951 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 15:15:05,953 INFO L435 NwaCegarLoop]: 1616 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, 1616 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 15:15:05,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-12-02 15:15:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-12-02 15:15:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-12-02 15:15:06,020 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-12-02 15:15:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:06,021 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-12-02 15:15:06,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-12-02 15:15:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 15:15:06,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:06,022 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:06,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:15:06,023 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:06,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-12-02 15:15:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772444196] [2024-12-02 15:15:06,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:06,217 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 15:15:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772444196] [2024-12-02 15:15:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772444196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:15:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545374900] [2024-12-02 15:15:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:06,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:15:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:06,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:15:06,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:15:06,220 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:06,347 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-12-02 15:15:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:15:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 15:15:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:06,352 INFO L225 Difference]: With dead ends: 898 [2024-12-02 15:15:06,352 INFO L226 Difference]: Without dead ends: 857 [2024-12-02 15:15:06,352 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 15:15:06,353 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:06,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:15:06,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-12-02 15:15:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-12-02 15:15:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-12-02 15:15:06,382 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-12-02 15:15:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:06,383 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-12-02 15:15:06,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-12-02 15:15:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 15:15:06,384 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:06,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:06,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:15:06,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:06,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-12-02 15:15:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:06,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111304564] [2024-12-02 15:15:06,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:06,570 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 15:15:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111304564] [2024-12-02 15:15:06,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111304564] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:06,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826574664] [2024-12-02 15:15:06,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:06,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:06,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:06,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:06,572 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:06,765 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-12-02 15:15:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:15:06,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-12-02 15:15:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:06,770 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 15:15:06,770 INFO L226 Difference]: Without dead ends: 1079 [2024-12-02 15:15:06,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:15:06,771 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:06,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:15:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-12-02 15:15:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-12-02 15:15:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-12-02 15:15:06,794 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-12-02 15:15:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:06,794 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-12-02 15:15:06,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-12-02 15:15:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 15:15:06,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:06,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:06,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:15:06,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:06,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-12-02 15:15:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:06,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821964937] [2024-12-02 15:15:06,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:06,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:06,874 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 15:15:06,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:06,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821964937] [2024-12-02 15:15:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821964937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:06,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:06,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572445604] [2024-12-02 15:15:06,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:06,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:06,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:06,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:06,875 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:06,907 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-12-02 15:15:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:06,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-12-02 15:15:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:06,911 INFO L225 Difference]: With dead ends: 988 [2024-12-02 15:15:06,911 INFO L226 Difference]: Without dead ends: 916 [2024-12-02 15:15:06,911 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 15:15:06,912 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:06,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-12-02 15:15:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-12-02 15:15:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-12-02 15:15:06,933 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-12-02 15:15:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:06,933 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-12-02 15:15:06,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-12-02 15:15:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 15:15:06,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:06,935 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:06,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:15:06,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:06,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-12-02 15:15:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:06,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820550014] [2024-12-02 15:15:06,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:07,172 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 15:15:07,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:07,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820550014] [2024-12-02 15:15:07,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820550014] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:07,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:07,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:07,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343157501] [2024-12-02 15:15:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:07,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:07,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:07,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:07,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:07,173 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:07,313 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-12-02 15:15:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:15:07,314 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-12-02 15:15:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:07,318 INFO L225 Difference]: With dead ends: 1047 [2024-12-02 15:15:07,318 INFO L226 Difference]: Without dead ends: 916 [2024-12-02 15:15:07,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:15:07,319 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:07,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-12-02 15:15:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-12-02 15:15:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-12-02 15:15:07,370 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-12-02 15:15:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:07,370 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-12-02 15:15:07,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-12-02 15:15:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:15:07,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:07,372 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:07,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:15:07,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-12-02 15:15:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190521625] [2024-12-02 15:15:07,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:07,554 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 15:15:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190521625] [2024-12-02 15:15:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190521625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:15:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252908863] [2024-12-02 15:15:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:07,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:15:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:07,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:15:07,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:15:07,555 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:07,597 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-12-02 15:15:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:15:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:15:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:07,602 INFO L225 Difference]: With dead ends: 922 [2024-12-02 15:15:07,602 INFO L226 Difference]: Without dead ends: 920 [2024-12-02 15:15:07,602 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 15:15:07,603 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:07,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-12-02 15:15:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-12-02 15:15:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-12-02 15:15:07,626 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-12-02 15:15:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:07,627 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-12-02 15:15:07,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-12-02 15:15:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 15:15:07,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:07,628 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:07,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:15:07,628 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:07,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 470915509, now seen corresponding path program 1 times [2024-12-02 15:15:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091341092] [2024-12-02 15:15:07,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:07,683 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 15:15:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:07,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091341092] [2024-12-02 15:15:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091341092] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:07,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:15:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608639121] [2024-12-02 15:15:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:07,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:07,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:07,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:07,684 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:10,597 INFO L93 Difference]: Finished difference Result 2424 states and 4547 transitions. [2024-12-02 15:15:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 15:15:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:10,602 INFO L225 Difference]: With dead ends: 2424 [2024-12-02 15:15:10,602 INFO L226 Difference]: Without dead ends: 1671 [2024-12-02 15:15:10,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:10,604 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 854 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:10,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 164 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 15:15:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2024-12-02 15:15:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2024-12-02 15:15:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1669 states have (on average 1.8268424206111444) internal successors, (3049), 1670 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 3049 transitions. [2024-12-02 15:15:10,626 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 3049 transitions. Word has length 48 [2024-12-02 15:15:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:10,626 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 3049 transitions. [2024-12-02 15:15:10,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 3049 transitions. [2024-12-02 15:15:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:15:10,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:10,627 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:10,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:15:10,628 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:10,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-12-02 15:15:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144183791] [2024-12-02 15:15:10,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:10,671 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 15:15:10,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:10,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144183791] [2024-12-02 15:15:10,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144183791] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:10,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:10,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68598341] [2024-12-02 15:15:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:10,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:10,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:10,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:10,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:10,673 INFO L87 Difference]: Start difference. First operand 1671 states and 3049 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:10,694 INFO L93 Difference]: Finished difference Result 1822 states and 3275 transitions. [2024-12-02 15:15:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:10,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 15:15:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:10,700 INFO L225 Difference]: With dead ends: 1822 [2024-12-02 15:15:10,700 INFO L226 Difference]: Without dead ends: 1744 [2024-12-02 15:15:10,700 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 15:15:10,701 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:10,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2024-12-02 15:15:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2024-12-02 15:15:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.8120689655172413) internal successors, (3153), 1741 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 3153 transitions. [2024-12-02 15:15:10,725 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 3153 transitions. Word has length 49 [2024-12-02 15:15:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:10,726 INFO L471 AbstractCegarLoop]: Abstraction has 1742 states and 3153 transitions. [2024-12-02 15:15:10,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 3153 transitions. [2024-12-02 15:15:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:15:10,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:10,726 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:10,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:15:10,727 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:10,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-12-02 15:15:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415041509] [2024-12-02 15:15:10,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:10,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:10,766 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 15:15:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415041509] [2024-12-02 15:15:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415041509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910277700] [2024-12-02 15:15:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:10,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:10,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:10,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:10,768 INFO L87 Difference]: Start difference. First operand 1742 states and 3153 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:10,790 INFO L93 Difference]: Finished difference Result 2128 states and 3725 transitions. [2024-12-02 15:15:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 15:15:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:10,795 INFO L225 Difference]: With dead ends: 2128 [2024-12-02 15:15:10,795 INFO L226 Difference]: Without dead ends: 1923 [2024-12-02 15:15:10,796 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 15:15:10,796 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:10,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2024-12-02 15:15:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1921. [2024-12-02 15:15:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1919 states have (on average 1.7774882751433039) internal successors, (3411), 1920 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3411 transitions. [2024-12-02 15:15:10,823 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3411 transitions. Word has length 49 [2024-12-02 15:15:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:10,823 INFO L471 AbstractCegarLoop]: Abstraction has 1921 states and 3411 transitions. [2024-12-02 15:15:10,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3411 transitions. [2024-12-02 15:15:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:15:10,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:10,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:10,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:15:10,824 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:10,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-12-02 15:15:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353466625] [2024-12-02 15:15:10,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:10,866 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 15:15:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353466625] [2024-12-02 15:15:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353466625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:10,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887791131] [2024-12-02 15:15:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:10,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:10,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:10,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:10,868 INFO L87 Difference]: Start difference. First operand 1921 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:10,891 INFO L93 Difference]: Finished difference Result 2641 states and 4457 transitions. [2024-12-02 15:15:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:10,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 15:15:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:10,896 INFO L225 Difference]: With dead ends: 2641 [2024-12-02 15:15:10,896 INFO L226 Difference]: Without dead ends: 2257 [2024-12-02 15:15:10,897 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 15:15:10,897 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:10,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-12-02 15:15:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2255. [2024-12-02 15:15:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2253 states have (on average 1.7217043941411452) internal successors, (3879), 2254 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3879 transitions. [2024-12-02 15:15:10,957 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3879 transitions. Word has length 49 [2024-12-02 15:15:10,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:10,958 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3879 transitions. [2024-12-02 15:15:10,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:10,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3879 transitions. [2024-12-02 15:15:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 15:15:10,958 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:10,958 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:10,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:15:10,959 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:10,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-12-02 15:15:10,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:10,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008704612] [2024-12-02 15:15:10,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:10,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:10,994 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 15:15:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008704612] [2024-12-02 15:15:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008704612] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:10,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102282512] [2024-12-02 15:15:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:10,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:10,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:10,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:10,996 INFO L87 Difference]: Start difference. First operand 2255 states and 3879 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:11,022 INFO L93 Difference]: Finished difference Result 3595 states and 5777 transitions. [2024-12-02 15:15:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-12-02 15:15:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:11,029 INFO L225 Difference]: With dead ends: 3595 [2024-12-02 15:15:11,029 INFO L226 Difference]: Without dead ends: 2877 [2024-12-02 15:15:11,030 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 15:15:11,030 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:11,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-12-02 15:15:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2875. [2024-12-02 15:15:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2873 states have (on average 1.6425339366515836) internal successors, (4719), 2874 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4719 transitions. [2024-12-02 15:15:11,070 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4719 transitions. Word has length 49 [2024-12-02 15:15:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4719 transitions. [2024-12-02 15:15:11,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4719 transitions. [2024-12-02 15:15:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 15:15:11,071 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:11,071 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:11,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:15:11,072 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:11,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:11,072 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-12-02 15:15:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368932374] [2024-12-02 15:15:11,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:11,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 15:15:11,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:11,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368932374] [2024-12-02 15:15:11,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368932374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:11,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:11,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691672134] [2024-12-02 15:15:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:11,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:11,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:11,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:11,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:11,174 INFO L87 Difference]: Start difference. First operand 2875 states and 4719 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:11,303 INFO L93 Difference]: Finished difference Result 8149 states and 12092 transitions. [2024-12-02 15:15:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:15:11,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 15:15:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:11,320 INFO L225 Difference]: With dead ends: 8149 [2024-12-02 15:15:11,320 INFO L226 Difference]: Without dead ends: 7187 [2024-12-02 15:15:11,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:15:11,323 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4652 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:11,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2024-12-02 15:15:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 4027. [2024-12-02 15:15:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4027 states, 4025 states have (on average 1.5679503105590062) internal successors, (6311), 4026 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 6311 transitions. [2024-12-02 15:15:11,402 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 6311 transitions. Word has length 67 [2024-12-02 15:15:11,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:11,403 INFO L471 AbstractCegarLoop]: Abstraction has 4027 states and 6311 transitions. [2024-12-02 15:15:11,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 6311 transitions. [2024-12-02 15:15:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 15:15:11,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:11,404 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:11,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:15:11,405 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:11,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-12-02 15:15:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:11,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042234613] [2024-12-02 15:15:11,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 15:15:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:11,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042234613] [2024-12-02 15:15:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042234613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:11,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:11,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223582784] [2024-12-02 15:15:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:11,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:11,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:11,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:11,497 INFO L87 Difference]: Start difference. First operand 4027 states and 6311 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:11,639 INFO L93 Difference]: Finished difference Result 9485 states and 13948 transitions. [2024-12-02 15:15:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:15:11,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 15:15:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:11,656 INFO L225 Difference]: With dead ends: 9485 [2024-12-02 15:15:11,656 INFO L226 Difference]: Without dead ends: 8147 [2024-12-02 15:15:11,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:15:11,659 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4654 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:11,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 3358 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8147 states. [2024-12-02 15:15:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8147 to 5843. [2024-12-02 15:15:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 5841 states have (on average 1.5091593905153227) internal successors, (8815), 5842 states have internal predecessors, (8815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 8815 transitions. [2024-12-02 15:15:11,772 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 8815 transitions. Word has length 67 [2024-12-02 15:15:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:11,773 INFO L471 AbstractCegarLoop]: Abstraction has 5843 states and 8815 transitions. [2024-12-02 15:15:11,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 8815 transitions. [2024-12-02 15:15:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 15:15:11,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:11,775 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:11,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:15:11,775 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:11,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:11,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-12-02 15:15:11,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:11,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317663153] [2024-12-02 15:15:11,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:15:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317663153] [2024-12-02 15:15:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317663153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:11,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:11,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076739628] [2024-12-02 15:15:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:11,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:11,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:11,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:11,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:11,866 INFO L87 Difference]: Start difference. First operand 5843 states and 8815 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:12,055 INFO L93 Difference]: Finished difference Result 10821 states and 15796 transitions. [2024-12-02 15:15:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:15:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 15:15:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:12,067 INFO L225 Difference]: With dead ends: 10821 [2024-12-02 15:15:12,067 INFO L226 Difference]: Without dead ends: 9483 [2024-12-02 15:15:12,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:15:12,069 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4677 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:12,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2024-12-02 15:15:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 7179. [2024-12-02 15:15:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7177 states have (on average 1.4857182666852444) internal successors, (10663), 7178 states have internal predecessors, (10663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10663 transitions. [2024-12-02 15:15:12,188 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10663 transitions. Word has length 67 [2024-12-02 15:15:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:12,188 INFO L471 AbstractCegarLoop]: Abstraction has 7179 states and 10663 transitions. [2024-12-02 15:15:12,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10663 transitions. [2024-12-02 15:15:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 15:15:12,190 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:12,190 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:12,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:15:12,190 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:12,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:12,191 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-12-02 15:15:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858247599] [2024-12-02 15:15:12,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 15:15:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858247599] [2024-12-02 15:15:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858247599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:12,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:12,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:15:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326569919] [2024-12-02 15:15:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:12,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:15:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:12,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:15:12,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:15:12,282 INFO L87 Difference]: Start difference. First operand 7179 states and 10663 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:12,449 INFO L93 Difference]: Finished difference Result 12157 states and 17644 transitions. [2024-12-02 15:15:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:15:12,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 15:15:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:12,463 INFO L225 Difference]: With dead ends: 12157 [2024-12-02 15:15:12,464 INFO L226 Difference]: Without dead ends: 10819 [2024-12-02 15:15:12,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:15:12,468 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4666 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:12,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 3368 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2024-12-02 15:15:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 8515. [2024-12-02 15:15:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4696346763773054) internal successors, (12511), 8514 states have internal predecessors, (12511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12511 transitions. [2024-12-02 15:15:12,595 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12511 transitions. Word has length 67 [2024-12-02 15:15:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:12,595 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12511 transitions. [2024-12-02 15:15:12,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12511 transitions. [2024-12-02 15:15:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 15:15:12,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:12,597 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:12,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:15:12,597 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:12,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-12-02 15:15:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127451921] [2024-12-02 15:15:12,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127451921] [2024-12-02 15:15:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127451921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:12,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:12,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476365302] [2024-12-02 15:15:12,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:12,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:12,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:12,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:12,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:12,666 INFO L87 Difference]: Start difference. First operand 8515 states and 12511 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:12,757 INFO L93 Difference]: Finished difference Result 15495 states and 22177 transitions. [2024-12-02 15:15:12,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-12-02 15:15:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:12,766 INFO L225 Difference]: With dead ends: 15495 [2024-12-02 15:15:12,766 INFO L226 Difference]: Without dead ends: 8517 [2024-12-02 15:15:12,771 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 15:15:12,772 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:12,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-12-02 15:15:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-12-02 15:15:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4550687184306355) internal successors, (12387), 8514 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12387 transitions. [2024-12-02 15:15:12,918 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12387 transitions. Word has length 68 [2024-12-02 15:15:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:12,919 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12387 transitions. [2024-12-02 15:15:12,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12387 transitions. [2024-12-02 15:15:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 15:15:12,920 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:12,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:12,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:15:12,920 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:12,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-12-02 15:15:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:12,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531853932] [2024-12-02 15:15:12,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531853932] [2024-12-02 15:15:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531853932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:12,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862456903] [2024-12-02 15:15:12,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:12,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:12,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:12,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:12,987 INFO L87 Difference]: Start difference. First operand 8515 states and 12387 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:13,037 INFO L93 Difference]: Finished difference Result 11177 states and 16060 transitions. [2024-12-02 15:15:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 15:15:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:13,044 INFO L225 Difference]: With dead ends: 11177 [2024-12-02 15:15:13,045 INFO L226 Difference]: Without dead ends: 4199 [2024-12-02 15:15:13,048 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 15:15:13,049 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:13,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-12-02 15:15:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-12-02 15:15:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.5439350525310411) internal successors, (6466), 4189 states have internal predecessors, (6466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6466 transitions. [2024-12-02 15:15:13,100 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6466 transitions. Word has length 69 [2024-12-02 15:15:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:13,100 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6466 transitions. [2024-12-02 15:15:13,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6466 transitions. [2024-12-02 15:15:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 15:15:13,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:13,101 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:13,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:15:13,101 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:13,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-12-02 15:15:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286643432] [2024-12-02 15:15:13,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286643432] [2024-12-02 15:15:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286643432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:13,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687084361] [2024-12-02 15:15:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:13,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:13,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:13,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:13,166 INFO L87 Difference]: Start difference. First operand 4190 states and 6466 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:13,199 INFO L93 Difference]: Finished difference Result 5514 states and 8272 transitions. [2024-12-02 15:15:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 15:15:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:13,204 INFO L225 Difference]: With dead ends: 5514 [2024-12-02 15:15:13,204 INFO L226 Difference]: Without dead ends: 2872 [2024-12-02 15:15:13,206 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 15:15:13,206 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:13,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-12-02 15:15:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-12-02 15:15:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.6178521617852162) internal successors, (4640), 2869 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4640 transitions. [2024-12-02 15:15:13,238 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4640 transitions. Word has length 70 [2024-12-02 15:15:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:13,238 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4640 transitions. [2024-12-02 15:15:13,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4640 transitions. [2024-12-02 15:15:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 15:15:13,239 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:13,239 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:13,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:15:13,239 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:13,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-12-02 15:15:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168248573] [2024-12-02 15:15:13,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:13,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168248573] [2024-12-02 15:15:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168248573] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:15:13,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:15:13,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:15:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024274439] [2024-12-02 15:15:13,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:15:13,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:15:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:13,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:15:13,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:15:13,301 INFO L87 Difference]: Start difference. First operand 2870 states and 4640 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:13,325 INFO L93 Difference]: Finished difference Result 3534 states and 5533 transitions. [2024-12-02 15:15:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:15:13,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-12-02 15:15:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:13,330 INFO L225 Difference]: With dead ends: 3534 [2024-12-02 15:15:13,330 INFO L226 Difference]: Without dead ends: 2212 [2024-12-02 15:15:13,331 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 15:15:13,331 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:13,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:15:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-12-02 15:15:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-12-02 15:15:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.6929347826086956) internal successors, (3738), 2209 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3738 transitions. [2024-12-02 15:15:13,353 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3738 transitions. Word has length 72 [2024-12-02 15:15:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:13,353 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3738 transitions. [2024-12-02 15:15:13,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3738 transitions. [2024-12-02 15:15:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 15:15:13,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:13,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:13,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:15:13,354 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:13,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-12-02 15:15:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:13,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275033066] [2024-12-02 15:15:13,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:14,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:14,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275033066] [2024-12-02 15:15:14,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275033066] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:15:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936402206] [2024-12-02 15:15:14,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:14,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:14,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:15:14,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:15:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:14,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:15:14,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:15:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:15,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:15:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:15,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936402206] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:15:15,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:15:15,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-12-02 15:15:15,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964904744] [2024-12-02 15:15:15,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:15:15,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 15:15:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:15,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 15:15:15,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:15:15,557 INFO L87 Difference]: Start difference. First operand 2210 states and 3738 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:20,393 INFO L93 Difference]: Finished difference Result 7458 states and 10573 transitions. [2024-12-02 15:15:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 15:15:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-12-02 15:15:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:20,404 INFO L225 Difference]: With dead ends: 7458 [2024-12-02 15:15:20,404 INFO L226 Difference]: Without dead ends: 6730 [2024-12-02 15:15:20,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1650, Invalid=8450, Unknown=0, NotChecked=0, Total=10100 [2024-12-02 15:15:20,408 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 18363 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18363 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:20,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18363 Valid, 7916 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:15:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6730 states. [2024-12-02 15:15:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6730 to 6143. [2024-12-02 15:15:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6141 states have (on average 1.426803452206481) internal successors, (8762), 6142 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 8762 transitions. [2024-12-02 15:15:20,523 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 8762 transitions. Word has length 74 [2024-12-02 15:15:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:20,523 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 8762 transitions. [2024-12-02 15:15:20,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 8762 transitions. [2024-12-02 15:15:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 15:15:20,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:20,524 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:20,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:15:20,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:20,725 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:20,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash 619603757, now seen corresponding path program 1 times [2024-12-02 15:15:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375215652] [2024-12-02 15:15:20,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375215652] [2024-12-02 15:15:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375215652] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:15:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079373363] [2024-12-02 15:15:21,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:21,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:15:21,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:15:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:22,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:15:22,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:15:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:22,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:15:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079373363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:15:23,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:15:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-12-02 15:15:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458531646] [2024-12-02 15:15:23,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:15:23,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 15:15:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:23,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 15:15:23,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-12-02 15:15:23,260 INFO L87 Difference]: Start difference. First operand 6143 states and 8762 transitions. Second operand has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:25,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:25,358 INFO L93 Difference]: Finished difference Result 24391 states and 32369 transitions. [2024-12-02 15:15:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 15:15:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-12-02 15:15:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:25,372 INFO L225 Difference]: With dead ends: 24391 [2024-12-02 15:15:25,372 INFO L226 Difference]: Without dead ends: 20131 [2024-12-02 15:15:25,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 15:15:25,377 INFO L435 NwaCegarLoop]: 1496 mSDtfsCounter, 18831 mSDsluCounter, 6473 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18831 SdHoareTripleChecker+Valid, 7969 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:25,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18831 Valid, 7969 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:15:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2024-12-02 15:15:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 19891. [2024-12-02 15:15:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19891 states, 19889 states have (on average 1.3032329428327216) internal successors, (25920), 19890 states have internal predecessors, (25920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19891 states to 19891 states and 25920 transitions. [2024-12-02 15:15:25,761 INFO L78 Accepts]: Start accepts. Automaton has 19891 states and 25920 transitions. Word has length 75 [2024-12-02 15:15:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:25,761 INFO L471 AbstractCegarLoop]: Abstraction has 19891 states and 25920 transitions. [2024-12-02 15:15:25,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.793103448275862) internal successors, (197), 28 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 19891 states and 25920 transitions. [2024-12-02 15:15:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 15:15:25,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:25,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:25,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:15:25,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 15:15:25,964 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:25,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2128735329, now seen corresponding path program 1 times [2024-12-02 15:15:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687359298] [2024-12-02 15:15:25,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:25,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:26,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:26,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687359298] [2024-12-02 15:15:26,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687359298] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:15:26,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022789350] [2024-12-02 15:15:26,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:26,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:26,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:26,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:15:26,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:15:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:26,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:15:26,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:15:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:27,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:15:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022789350] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:15:28,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:15:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 31 [2024-12-02 15:15:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565385056] [2024-12-02 15:15:28,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:15:28,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:15:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:28,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:15:28,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:15:28,005 INFO L87 Difference]: Start difference. First operand 19891 states and 25920 transitions. Second operand has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:30,222 INFO L93 Difference]: Finished difference Result 38211 states and 49259 transitions. [2024-12-02 15:15:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 15:15:30,222 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-12-02 15:15:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:30,240 INFO L225 Difference]: With dead ends: 38211 [2024-12-02 15:15:30,240 INFO L226 Difference]: Without dead ends: 23993 [2024-12-02 15:15:30,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 15:15:30,250 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 16855 mSDsluCounter, 6601 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16855 SdHoareTripleChecker+Valid, 8112 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:30,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16855 Valid, 8112 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:15:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2024-12-02 15:15:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 13456. [2024-12-02 15:15:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13456 states, 13454 states have (on average 1.3177493682176304) internal successors, (17729), 13455 states have internal predecessors, (17729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:30,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13456 states to 13456 states and 17729 transitions. [2024-12-02 15:15:30,672 INFO L78 Accepts]: Start accepts. Automaton has 13456 states and 17729 transitions. Word has length 75 [2024-12-02 15:15:30,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:30,672 INFO L471 AbstractCegarLoop]: Abstraction has 13456 states and 17729 transitions. [2024-12-02 15:15:30,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.612903225806452) internal successors, (205), 31 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:30,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13456 states and 17729 transitions. [2024-12-02 15:15:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 15:15:30,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:30,673 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:30,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:15:30,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 15:15:30,874 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:30,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 337145422, now seen corresponding path program 1 times [2024-12-02 15:15:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:30,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084935189] [2024-12-02 15:15:30,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:31,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084935189] [2024-12-02 15:15:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084935189] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:15:31,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172396834] [2024-12-02 15:15:31,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:31,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:31,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:31,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:15:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:15:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:31,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 15:15:31,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:15:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:31,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:15:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172396834] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:15:32,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:15:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-12-02 15:15:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971187401] [2024-12-02 15:15:32,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:15:32,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:15:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:32,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:15:32,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:15:32,466 INFO L87 Difference]: Start difference. First operand 13456 states and 17729 transitions. Second operand has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:15:33,141 INFO L93 Difference]: Finished difference Result 27254 states and 35074 transitions. [2024-12-02 15:15:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:15:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-12-02 15:15:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:15:33,153 INFO L225 Difference]: With dead ends: 27254 [2024-12-02 15:15:33,154 INFO L226 Difference]: Without dead ends: 16245 [2024-12-02 15:15:33,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:15:33,160 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 16496 mSDsluCounter, 6245 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16496 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:15:33,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16496 Valid, 7746 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:15:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2024-12-02 15:15:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 16241. [2024-12-02 15:15:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16241 states, 16239 states have (on average 1.305499107087875) internal successors, (21200), 16240 states have internal predecessors, (21200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16241 states to 16241 states and 21200 transitions. [2024-12-02 15:15:33,605 INFO L78 Accepts]: Start accepts. Automaton has 16241 states and 21200 transitions. Word has length 76 [2024-12-02 15:15:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:15:33,605 INFO L471 AbstractCegarLoop]: Abstraction has 16241 states and 21200 transitions. [2024-12-02 15:15:33,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.260869565217392) internal successors, (167), 22 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:15:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 16241 states and 21200 transitions. [2024-12-02 15:15:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 15:15:33,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:15:33,606 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:15:33,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:15:33,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 15:15:33,806 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:15:33,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:15:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-12-02 15:15:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:15:33,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271260678] [2024-12-02 15:15:33,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:15:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:35,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:15:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271260678] [2024-12-02 15:15:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271260678] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:15:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507466092] [2024-12-02 15:15:35,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:15:35,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:15:35,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:15:35,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:15:35,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:15:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:15:35,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 15:15:35,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:15:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:39,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:15:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:15:45,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507466092] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:15:45,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:15:45,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29, 26] total 68 [2024-12-02 15:15:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904766360] [2024-12-02 15:15:45,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:15:45,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:15:45,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:15:45,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:15:45,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=3850, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:15:45,646 INFO L87 Difference]: Start difference. First operand 16241 states and 21200 transitions. Second operand has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:17:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:17:40,251 INFO L93 Difference]: Finished difference Result 65135 states and 82254 transitions. [2024-12-02 15:17:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-12-02 15:17:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-02 15:17:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:17:40,289 INFO L225 Difference]: With dead ends: 65135 [2024-12-02 15:17:40,289 INFO L226 Difference]: Without dead ends: 55958 [2024-12-02 15:17:40,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 334 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47724 ImplicationChecksByTransitivity, 107.4s TimeCoverageRelationStatistics Valid=19316, Invalid=93244, Unknown=0, NotChecked=0, Total=112560 [2024-12-02 15:17:40,310 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 25655 mSDsluCounter, 27553 mSDsCounter, 0 mSdLazyCounter, 7611 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25655 SdHoareTripleChecker+Valid, 29090 SdHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 7611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:17:40,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25655 Valid, 29090 Invalid, 7843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [232 Valid, 7611 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-12-02 15:17:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55958 states. [2024-12-02 15:17:41,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55958 to 28332. [2024-12-02 15:17:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28332 states, 28330 states have (on average 1.281150723614543) internal successors, (36295), 28331 states have internal predecessors, (36295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:17:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28332 states to 28332 states and 36295 transitions. [2024-12-02 15:17:41,516 INFO L78 Accepts]: Start accepts. Automaton has 28332 states and 36295 transitions. Word has length 77 [2024-12-02 15:17:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:17:41,516 INFO L471 AbstractCegarLoop]: Abstraction has 28332 states and 36295 transitions. [2024-12-02 15:17:41,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:17:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28332 states and 36295 transitions. [2024-12-02 15:17:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:17:41,517 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:17:41,517 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:17:41,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 15:17:41,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 15:17:41,718 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:17:41,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:17:41,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1134507608, now seen corresponding path program 1 times [2024-12-02 15:17:41,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:17:41,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669345739] [2024-12-02 15:17:41,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:17:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:17:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:17:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:17:42,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:17:42,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669345739] [2024-12-02 15:17:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669345739] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:17:42,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685527058] [2024-12-02 15:17:42,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:17:42,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:17:42,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:17:42,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:17:42,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:17:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:17:42,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 15:17:42,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:17:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:17:48,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:17:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:17:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685527058] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:17:55,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:17:55,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 31, 24] total 63 [2024-12-02 15:17:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029610343] [2024-12-02 15:17:55,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:17:55,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 15:17:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:17:55,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 15:17:55,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=3338, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 15:17:55,168 INFO L87 Difference]: Start difference. First operand 28332 states and 36295 transitions. Second operand has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:05,682 INFO L93 Difference]: Finished difference Result 39499 states and 50403 transitions. [2024-12-02 15:18:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 15:18:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:18:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:05,699 INFO L225 Difference]: With dead ends: 39499 [2024-12-02 15:18:05,699 INFO L226 Difference]: Without dead ends: 23735 [2024-12-02 15:18:05,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2142, Invalid=9630, Unknown=0, NotChecked=0, Total=11772 [2024-12-02 15:18:05,708 INFO L435 NwaCegarLoop]: 1483 mSDtfsCounter, 15881 mSDsluCounter, 29817 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15881 SdHoareTripleChecker+Valid, 31300 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:05,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15881 Valid, 31300 Invalid, 1714 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 15:18:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2024-12-02 15:18:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 19166. [2024-12-02 15:18:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19166 states, 19164 states have (on average 1.30030265080359) internal successors, (24919), 19165 states have internal predecessors, (24919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19166 states to 19166 states and 24919 transitions. [2024-12-02 15:18:06,495 INFO L78 Accepts]: Start accepts. Automaton has 19166 states and 24919 transitions. Word has length 78 [2024-12-02 15:18:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:06,495 INFO L471 AbstractCegarLoop]: Abstraction has 19166 states and 24919 transitions. [2024-12-02 15:18:06,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19166 states and 24919 transitions. [2024-12-02 15:18:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 15:18:06,496 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:06,496 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:18:06,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:18:06,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 15:18:06,697 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:06,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1080487678, now seen corresponding path program 1 times [2024-12-02 15:18:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147298623] [2024-12-02 15:18:06,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:06,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147298623] [2024-12-02 15:18:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147298623] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797910849] [2024-12-02 15:18:07,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:07,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:07,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:07,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:07,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:18:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:07,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 15:18:07,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:08,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:09,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797910849] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:09,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:09,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-12-02 15:18:09,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936220619] [2024-12-02 15:18:09,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:09,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:18:09,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:09,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:18:09,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:18:09,045 INFO L87 Difference]: Start difference. First operand 19166 states and 24919 transitions. Second operand has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:12,732 INFO L93 Difference]: Finished difference Result 63069 states and 79864 transitions. [2024-12-02 15:18:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:18:12,733 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 15:18:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:12,772 INFO L225 Difference]: With dead ends: 63069 [2024-12-02 15:18:12,772 INFO L226 Difference]: Without dead ends: 55839 [2024-12-02 15:18:12,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=484, Invalid=2168, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 15:18:12,781 INFO L435 NwaCegarLoop]: 1497 mSDtfsCounter, 11772 mSDsluCounter, 15249 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11772 SdHoareTripleChecker+Valid, 16746 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:12,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11772 Valid, 16746 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:18:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55839 states. [2024-12-02 15:18:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55839 to 17987. [2024-12-02 15:18:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17987 states, 17985 states have (on average 1.3013066444259105) internal successors, (23404), 17986 states have internal predecessors, (23404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 23404 transitions. [2024-12-02 15:18:13,698 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 23404 transitions. Word has length 78 [2024-12-02 15:18:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:13,698 INFO L471 AbstractCegarLoop]: Abstraction has 17987 states and 23404 transitions. [2024-12-02 15:18:13,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.9375) internal successors, (190), 32 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 23404 transitions. [2024-12-02 15:18:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 15:18:13,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:13,699 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:18:13,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:18:13,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 15:18:13,899 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:13,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1204034687, now seen corresponding path program 1 times [2024-12-02 15:18:13,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966192542] [2024-12-02 15:18:13,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966192542] [2024-12-02 15:18:14,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966192542] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958322800] [2024-12-02 15:18:14,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:14,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:14,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:14,703 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:14,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:18:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:14,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 15:18:14,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:16,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:18,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958322800] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:18,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:18,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 19] total 47 [2024-12-02 15:18:18,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706012204] [2024-12-02 15:18:18,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:18,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 15:18:18,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:18,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 15:18:18,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 15:18:18,883 INFO L87 Difference]: Start difference. First operand 17987 states and 23404 transitions. Second operand has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:25,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:25,089 INFO L93 Difference]: Finished difference Result 26352 states and 33772 transitions. [2024-12-02 15:18:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-12-02 15:18:25,089 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 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 79 [2024-12-02 15:18:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:25,102 INFO L225 Difference]: With dead ends: 26352 [2024-12-02 15:18:25,102 INFO L226 Difference]: Without dead ends: 19514 [2024-12-02 15:18:25,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1747, Invalid=6625, Unknown=0, NotChecked=0, Total=8372 [2024-12-02 15:18:25,108 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 20736 mSDsluCounter, 21251 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20736 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:25,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20736 Valid, 22766 Invalid, 1562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:18:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19514 states. [2024-12-02 15:18:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19514 to 14577. [2024-12-02 15:18:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14577 states, 14575 states have (on average 1.3064150943396227) internal successors, (19041), 14576 states have internal predecessors, (19041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 19041 transitions. [2024-12-02 15:18:25,831 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 19041 transitions. Word has length 79 [2024-12-02 15:18:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:25,832 INFO L471 AbstractCegarLoop]: Abstraction has 14577 states and 19041 transitions. [2024-12-02 15:18:25,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.51063829787234) internal successors, (212), 47 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 19041 transitions. [2024-12-02 15:18:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 15:18:25,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:25,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:25,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:18:26,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:18:26,034 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:26,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -237864929, now seen corresponding path program 1 times [2024-12-02 15:18:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519323412] [2024-12-02 15:18:26,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:26,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519323412] [2024-12-02 15:18:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519323412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:18:26,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:18:26,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:18:26,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251808535] [2024-12-02 15:18:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:18:26,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:18:26,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:26,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:18:26,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:18:26,079 INFO L87 Difference]: Start difference. First operand 14577 states and 19041 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:29,600 INFO L93 Difference]: Finished difference Result 17585 states and 24665 transitions. [2024-12-02 15:18:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:18:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-12-02 15:18:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:29,609 INFO L225 Difference]: With dead ends: 17585 [2024-12-02 15:18:29,609 INFO L226 Difference]: Without dead ends: 16081 [2024-12-02 15:18:29,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:18:29,611 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 1004 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:29,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 441 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 15:18:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2024-12-02 15:18:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 16079. [2024-12-02 15:18:30,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16079 states, 16077 states have (on average 1.3185295764135099) internal successors, (21198), 16078 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16079 states to 16079 states and 21198 transitions. [2024-12-02 15:18:30,288 INFO L78 Accepts]: Start accepts. Automaton has 16079 states and 21198 transitions. Word has length 121 [2024-12-02 15:18:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:30,288 INFO L471 AbstractCegarLoop]: Abstraction has 16079 states and 21198 transitions. [2024-12-02 15:18:30,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 16079 states and 21198 transitions. [2024-12-02 15:18:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 15:18:30,290 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:30,290 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:30,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 15:18:30,290 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:30,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1664818210, now seen corresponding path program 1 times [2024-12-02 15:18:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698992698] [2024-12-02 15:18:30,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 47 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:31,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698992698] [2024-12-02 15:18:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698992698] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:31,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215449244] [2024-12-02 15:18:31,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:31,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:31,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:31,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:18:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:31,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:18:31,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:31,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 23 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:33,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215449244] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:33,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:33,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2024-12-02 15:18:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321339629] [2024-12-02 15:18:33,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:33,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:18:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:33,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:18:33,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:18:33,392 INFO L87 Difference]: Start difference. First operand 16079 states and 21198 transitions. Second operand has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:37,464 INFO L93 Difference]: Finished difference Result 28966 states and 36989 transitions. [2024-12-02 15:18:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 15:18:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-12-02 15:18:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:37,481 INFO L225 Difference]: With dead ends: 28966 [2024-12-02 15:18:37,481 INFO L226 Difference]: Without dead ends: 22973 [2024-12-02 15:18:37,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1039, Invalid=4661, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 15:18:37,488 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 19840 mSDsluCounter, 17252 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19840 SdHoareTripleChecker+Valid, 18799 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:37,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19840 Valid, 18799 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:18:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22973 states. [2024-12-02 15:18:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22973 to 17956. [2024-12-02 15:18:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17956 states, 17954 states have (on average 1.2931380193828674) internal successors, (23217), 17955 states have internal predecessors, (23217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17956 states to 17956 states and 23217 transitions. [2024-12-02 15:18:38,353 INFO L78 Accepts]: Start accepts. Automaton has 17956 states and 23217 transitions. Word has length 124 [2024-12-02 15:18:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:38,353 INFO L471 AbstractCegarLoop]: Abstraction has 17956 states and 23217 transitions. [2024-12-02 15:18:38,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.5) internal successors, (336), 32 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17956 states and 23217 transitions. [2024-12-02 15:18:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 15:18:38,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:38,355 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:18:38,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:18:38,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 15:18:38,556 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:38,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1418733460, now seen corresponding path program 1 times [2024-12-02 15:18:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:38,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231108844] [2024-12-02 15:18:38,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231108844] [2024-12-02 15:18:39,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231108844] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092004495] [2024-12-02 15:18:39,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:39,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:39,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:39,204 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:39,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:18:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:39,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:18:39,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 36 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:40,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092004495] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:43,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-12-02 15:18:43,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422987242] [2024-12-02 15:18:43,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:43,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:18:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:43,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:18:43,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:18:43,083 INFO L87 Difference]: Start difference. First operand 17956 states and 23217 transitions. Second operand has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:50,018 INFO L93 Difference]: Finished difference Result 64324 states and 80235 transitions. [2024-12-02 15:18:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-12-02 15:18:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-12-02 15:18:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:50,052 INFO L225 Difference]: With dead ends: 64324 [2024-12-02 15:18:50,052 INFO L226 Difference]: Without dead ends: 49919 [2024-12-02 15:18:50,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1986, Invalid=8726, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 15:18:50,063 INFO L435 NwaCegarLoop]: 1623 mSDtfsCounter, 20025 mSDsluCounter, 8741 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20025 SdHoareTripleChecker+Valid, 10364 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:50,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20025 Valid, 10364 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:18:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49919 states. [2024-12-02 15:18:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49919 to 26377. [2024-12-02 15:18:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26377 states, 26375 states have (on average 1.2578199052132701) internal successors, (33175), 26376 states have internal predecessors, (33175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26377 states to 26377 states and 33175 transitions. [2024-12-02 15:18:51,646 INFO L78 Accepts]: Start accepts. Automaton has 26377 states and 33175 transitions. Word has length 124 [2024-12-02 15:18:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:51,646 INFO L471 AbstractCegarLoop]: Abstraction has 26377 states and 33175 transitions. [2024-12-02 15:18:51,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.090909090909092) internal successors, (300), 33 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 26377 states and 33175 transitions. [2024-12-02 15:18:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 15:18:51,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:51,649 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:51,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 15:18:51,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:51,849 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:51,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1450242217, now seen corresponding path program 1 times [2024-12-02 15:18:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751181812] [2024-12-02 15:18:51,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751181812] [2024-12-02 15:18:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751181812] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586149709] [2024-12-02 15:18:52,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:52,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:52,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:52,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:18:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:18:52,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 15:18:52,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:53,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:18:55,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586149709] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:55,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:55,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-12-02 15:18:55,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776422811] [2024-12-02 15:18:55,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:55,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 15:18:55,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:55,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 15:18:55,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:18:55,006 INFO L87 Difference]: Start difference. First operand 26377 states and 33175 transitions. Second operand has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:57,649 INFO L93 Difference]: Finished difference Result 41128 states and 51205 transitions. [2024-12-02 15:18:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 15:18:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2024-12-02 15:18:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:57,669 INFO L225 Difference]: With dead ends: 41128 [2024-12-02 15:18:57,669 INFO L226 Difference]: Without dead ends: 27281 [2024-12-02 15:18:57,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=497, Invalid=2053, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 15:18:57,678 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 24245 mSDsluCounter, 12331 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24245 SdHoareTripleChecker+Valid, 13848 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:57,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24245 Valid, 13848 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:18:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2024-12-02 15:18:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 26377. [2024-12-02 15:18:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26377 states, 26375 states have (on average 1.249781990521327) internal successors, (32963), 26376 states have internal predecessors, (32963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26377 states to 26377 states and 32963 transitions. [2024-12-02 15:18:59,345 INFO L78 Accepts]: Start accepts. Automaton has 26377 states and 32963 transitions. Word has length 125 [2024-12-02 15:18:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:59,346 INFO L471 AbstractCegarLoop]: Abstraction has 26377 states and 32963 transitions. [2024-12-02 15:18:59,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.5625) internal successors, (306), 31 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:18:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 26377 states and 32963 transitions. [2024-12-02 15:18:59,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 15:18:59,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:59,349 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:18:59,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 15:18:59,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:59,550 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:18:59,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1091070560, now seen corresponding path program 1 times [2024-12-02 15:18:59,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:59,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171261807] [2024-12-02 15:18:59,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:18:59,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:19:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:19:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:19:00,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171261807] [2024-12-02 15:19:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171261807] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:19:00,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980550084] [2024-12-02 15:19:00,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:19:00,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:19:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:19:00,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:19:00,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 15:19:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:19:00,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 15:19:00,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:19:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:19:03,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:19:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:19:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980550084] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:19:10,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:19:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 26] total 68 [2024-12-02 15:19:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262893817] [2024-12-02 15:19:10,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:19:10,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:19:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:19:10,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:19:10,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=4009, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:19:10,132 INFO L87 Difference]: Start difference. First operand 26377 states and 32963 transitions. Second operand has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:20:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:14,619 INFO L93 Difference]: Finished difference Result 87868 states and 106055 transitions. [2024-12-02 15:20:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2024-12-02 15:20:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-12-02 15:20:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:14,670 INFO L225 Difference]: With dead ends: 87868 [2024-12-02 15:20:14,670 INFO L226 Difference]: Without dead ends: 71822 [2024-12-02 15:20:14,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26449 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=11037, Invalid=58395, Unknown=0, NotChecked=0, Total=69432 [2024-12-02 15:20:14,684 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 34985 mSDsluCounter, 26797 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34985 SdHoareTripleChecker+Valid, 28322 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:20:14,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34985 Valid, 28322 Invalid, 4029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 15:20:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71822 states. [2024-12-02 15:20:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71822 to 35053. [2024-12-02 15:20:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35053 states, 35051 states have (on average 1.2301218224872328) internal successors, (43117), 35052 states have internal predecessors, (43117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:20:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35053 states to 35053 states and 43117 transitions. [2024-12-02 15:20:17,466 INFO L78 Accepts]: Start accepts. Automaton has 35053 states and 43117 transitions. Word has length 126 [2024-12-02 15:20:17,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:17,466 INFO L471 AbstractCegarLoop]: Abstraction has 35053 states and 43117 transitions. [2024-12-02 15:20:17,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:20:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 35053 states and 43117 transitions. [2024-12-02 15:20:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 15:20:17,469 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:17,469 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:20:17,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 15:20:17,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:20:17,670 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:17,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 607913984, now seen corresponding path program 1 times [2024-12-02 15:20:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325219879] [2024-12-02 15:20:17,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:20:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325219879] [2024-12-02 15:20:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325219879] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:20:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024545931] [2024-12-02 15:20:18,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:18,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:20:18,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:20:18,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:20:18,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 15:20:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:19,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 15:20:19,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:20:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:20:21,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:20:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:20:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024545931] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:20:25,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:20:25,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 25] total 68 [2024-12-02 15:20:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430802977] [2024-12-02 15:20:25,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:20:25,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:20:25,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:25,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:20:25,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=4203, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:20:25,735 INFO L87 Difference]: Start difference. First operand 35053 states and 43117 transitions. Second operand has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:21:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:17,710 INFO L93 Difference]: Finished difference Result 106038 states and 127311 transitions. [2024-12-02 15:21:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-12-02 15:21:17,710 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-12-02 15:21:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:17,774 INFO L225 Difference]: With dead ends: 106038 [2024-12-02 15:21:17,775 INFO L226 Difference]: Without dead ends: 93817 [2024-12-02 15:21:17,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44414 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=15429, Invalid=110241, Unknown=0, NotChecked=0, Total=125670 [2024-12-02 15:21:17,790 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 32939 mSDsluCounter, 53151 mSDsCounter, 0 mSdLazyCounter, 10158 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32939 SdHoareTripleChecker+Valid, 54830 SdHoareTripleChecker+Invalid, 10412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 10158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:17,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32939 Valid, 54830 Invalid, 10412 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [254 Valid, 10158 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-12-02 15:21:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93817 states. [2024-12-02 15:21:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93817 to 65379. [2024-12-02 15:21:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65379 states, 65377 states have (on average 1.2134848647077718) internal successors, (79334), 65378 states have internal predecessors, (79334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:21:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65379 states to 65379 states and 79334 transitions. [2024-12-02 15:21:23,758 INFO L78 Accepts]: Start accepts. Automaton has 65379 states and 79334 transitions. Word has length 126 [2024-12-02 15:21:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:23,759 INFO L471 AbstractCegarLoop]: Abstraction has 65379 states and 79334 transitions. [2024-12-02 15:21:23,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.014705882352941) internal successors, (341), 68 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:21:23,759 INFO L276 IsEmpty]: Start isEmpty. Operand 65379 states and 79334 transitions. [2024-12-02 15:21:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 15:21:23,762 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:23,762 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:23,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 15:21:23,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:23,963 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:23,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1164539556, now seen corresponding path program 1 times [2024-12-02 15:21:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673859242] [2024-12-02 15:21:23,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:23,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 43 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:21:25,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673859242] [2024-12-02 15:21:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673859242] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395512493] [2024-12-02 15:21:25,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:25,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:25,885 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:25,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 15:21:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:26,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 15:21:26,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:21:28,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:21:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:21:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395512493] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:21:33,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:21:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 22] total 70 [2024-12-02 15:21:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700931283] [2024-12-02 15:21:33,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:21:33,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 15:21:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:33,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 15:21:33,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=4487, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 15:21:33,005 INFO L87 Difference]: Start difference. First operand 65379 states and 79334 transitions. Second operand has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:22:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:50,766 INFO L93 Difference]: Finished difference Result 208032 states and 249000 transitions. [2024-12-02 15:22:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2024-12-02 15:22:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-12-02 15:22:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:50,897 INFO L225 Difference]: With dead ends: 208032 [2024-12-02 15:22:50,898 INFO L226 Difference]: Without dead ends: 169589 [2024-12-02 15:22:50,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26561 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=10990, Invalid=64360, Unknown=0, NotChecked=0, Total=75350 [2024-12-02 15:22:50,925 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 29344 mSDsluCounter, 43164 mSDsCounter, 0 mSdLazyCounter, 7829 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29344 SdHoareTripleChecker+Valid, 44826 SdHoareTripleChecker+Invalid, 8120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 7829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:50,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29344 Valid, 44826 Invalid, 8120 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [291 Valid, 7829 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 15:22:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169589 states. [2024-12-02 15:22:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169589 to 84446. [2024-12-02 15:22:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84446 states, 84444 states have (on average 1.2011392165221921) internal successors, (101429), 84445 states have internal predecessors, (101429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:22:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84446 states to 84446 states and 101429 transitions. [2024-12-02 15:22:59,928 INFO L78 Accepts]: Start accepts. Automaton has 84446 states and 101429 transitions. Word has length 126 [2024-12-02 15:22:59,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:59,928 INFO L471 AbstractCegarLoop]: Abstraction has 84446 states and 101429 transitions. [2024-12-02 15:22:59,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.185714285714286) internal successors, (363), 70 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:22:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 84446 states and 101429 transitions. [2024-12-02 15:22:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 15:22:59,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:59,931 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:22:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 15:23:00,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:23:00,132 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:00,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash -568615929, now seen corresponding path program 1 times [2024-12-02 15:23:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:00,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493082292] [2024-12-02 15:23:00,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:23:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493082292] [2024-12-02 15:23:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493082292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:23:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980035315] [2024-12-02 15:23:01,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:01,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:23:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:23:01,572 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:23:01,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 15:23:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:01,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-12-02 15:23:01,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:23:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:23:07,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:23:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:23:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980035315] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:23:16,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:23:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33, 31] total 88 [2024-12-02 15:23:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738729118] [2024-12-02 15:23:16,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:23:16,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-12-02 15:23:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:16,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-12-02 15:23:16,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7067, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 15:23:16,411 INFO L87 Difference]: Start difference. First operand 84446 states and 101429 transitions. Second operand has 88 states, 88 states have (on average 4.113636363636363) internal successors, (362), 88 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:42,718 INFO L93 Difference]: Finished difference Result 245660 states and 291635 transitions. [2024-12-02 15:28:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 455 states. [2024-12-02 15:28:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.113636363636363) internal successors, (362), 88 states have internal predecessors, (362), 0 states have call successors, (0), 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 127 [2024-12-02 15:28:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:42,897 INFO L225 Difference]: With dead ends: 245660 [2024-12-02 15:28:42,897 INFO L226 Difference]: Without dead ends: 216981 [2024-12-02 15:28:42,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 537 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118901 ImplicationChecksByTransitivity, 292.9s TimeCoverageRelationStatistics Valid=31674, Invalid=258308, Unknown=0, NotChecked=0, Total=289982 [2024-12-02 15:28:42,935 INFO L435 NwaCegarLoop]: 1674 mSDtfsCounter, 47208 mSDsluCounter, 55830 mSDsCounter, 0 mSdLazyCounter, 11541 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47208 SdHoareTripleChecker+Valid, 57504 SdHoareTripleChecker+Invalid, 12050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 11541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:42,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47208 Valid, 57504 Invalid, 12050 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [509 Valid, 11541 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2024-12-02 15:28:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216981 states. [2024-12-02 15:28:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216981 to 93649. [2024-12-02 15:28:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93649 states, 93647 states have (on average 1.198180400867086) internal successors, (112206), 93648 states have internal predecessors, (112206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93649 states to 93649 states and 112206 transitions. [2024-12-02 15:28:54,732 INFO L78 Accepts]: Start accepts. Automaton has 93649 states and 112206 transitions. Word has length 127 [2024-12-02 15:28:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:54,733 INFO L471 AbstractCegarLoop]: Abstraction has 93649 states and 112206 transitions. [2024-12-02 15:28:54,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.113636363636363) internal successors, (362), 88 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 15:28:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 93649 states and 112206 transitions. [2024-12-02 15:28:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 15:28:54,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:54,736 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:28:54,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 15:28:54,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 15:28:54,937 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:54,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 352996803, now seen corresponding path program 1 times [2024-12-02 15:28:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694051181] [2024-12-02 15:28:54,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 31 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:28:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694051181] [2024-12-02 15:28:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694051181] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:28:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702781889] [2024-12-02 15:28:58,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:58,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:28:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:28:58,161 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:28:58,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_847433e3-a5e2-4dee-91e6-c2d6f4bc17a8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 15:28:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:58,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 15:28:58,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 31 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:29:03,953 INFO L312 TraceCheckSpWp]: Computing backward predicates...