./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label11.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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/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 2521d3888c3910ac16b8a52868332f768d7d80524e896b9e06e11f157c249614 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:45:00,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:45:00,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:45:00,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:45:00,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:45:00,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:45:00,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:45:00,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:45:00,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:45:00,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:45:00,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:45:00,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:45:00,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:45:00,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:45:00,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:45:00,885 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:45:00,886 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:00,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:45:00,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:00,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:45:00,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:45:00,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:45:00,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:45:00,888 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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/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 -> 2521d3888c3910ac16b8a52868332f768d7d80524e896b9e06e11f157c249614 [2024-12-02 14:45:01,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:45:01,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:45:01,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:45:01,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:45:01,150 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:45:01,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem11_label11.c [2024-12-02 14:45:03,897 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/data/604c90df6/e12260ecbf9f4449974df8f0f874efdc/FLAGa53359a32 [2024-12-02 14:45:04,213 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:45:04,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/sv-benchmarks/c/eca-rers2012/Problem11_label11.c [2024-12-02 14:45:04,225 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/data/604c90df6/e12260ecbf9f4449974df8f0f874efdc/FLAGa53359a32 [2024-12-02 14:45:04,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/data/604c90df6/e12260ecbf9f4449974df8f0f874efdc [2024-12-02 14:45:04,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:45:04,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:45:04,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:04,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:45:04,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:45:04,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d75ccf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04, skipping insertion in model container [2024-12-02 14:45:04,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:45:04,470 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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/sv-benchmarks/c/eca-rers2012/Problem11_label11.c[8791,8804] [2024-12-02 14:45:04,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:04,655 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:45:04,686 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_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/sv-benchmarks/c/eca-rers2012/Problem11_label11.c[8791,8804] [2024-12-02 14:45:04,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:04,799 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:45:04,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04 WrapperNode [2024-12-02 14:45:04,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:04,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:04,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:45:04,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:45:04,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,906 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-12-02 14:45:04,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:04,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:45:04,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:45:04,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:45:04,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,987 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 14:45:04,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:04,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:45:05,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:45:05,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:45:05,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:45:05,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (1/1) ... [2024-12-02 14:45:05,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:05,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:05,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:45:05,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:45:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:45:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:45:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:45:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:45:05,183 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:45:05,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:45:06,659 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-12-02 14:45:06,659 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:45:06,678 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:45:06,678 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:45:06,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:06 BoogieIcfgContainer [2024-12-02 14:45:06,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:45:06,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:45:06,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:45:06,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:45:06,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:45:04" (1/3) ... [2024-12-02 14:45:06,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f58bf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:06, skipping insertion in model container [2024-12-02 14:45:06,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:04" (2/3) ... [2024-12-02 14:45:06,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f58bf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:06, skipping insertion in model container [2024-12-02 14:45:06,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:06" (3/3) ... [2024-12-02 14:45:06,689 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem11_label11.c [2024-12-02 14:45:06,706 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:45:06,708 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem11_label11.c that has 1 procedures, 283 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:45:06,778 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:45:06,791 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;@2ee3fbf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:45:06,791 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:45:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 14:45:06,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:06,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:06,806 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:06,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1818267785, now seen corresponding path program 1 times [2024-12-02 14:45:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:06,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525020250] [2024-12-02 14:45:06,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:07,218 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 14:45:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525020250] [2024-12-02 14:45:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525020250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:45:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905474926] [2024-12-02 14:45:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:07,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:07,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:07,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:07,244 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 14:45:08,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:08,402 INFO L93 Difference]: Finished difference Result 769 states and 1360 transitions. [2024-12-02 14:45:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 61 [2024-12-02 14:45:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:08,414 INFO L225 Difference]: With dead ends: 769 [2024-12-02 14:45:08,414 INFO L226 Difference]: Without dead ends: 422 [2024-12-02 14:45:08,418 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 14:45:08,420 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 179 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:08,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 163 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:45:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-12-02 14:45:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2024-12-02 14:45:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5231143552311435) internal successors, (626), 411 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2024-12-02 14:45:08,485 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 61 [2024-12-02 14:45:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:08,486 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2024-12-02 14:45:08,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 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 14:45:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2024-12-02 14:45:08,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 14:45:08,489 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:08,490 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:08,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:45:08,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:08,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash -622668213, now seen corresponding path program 1 times [2024-12-02 14:45:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740641026] [2024-12-02 14:45:08,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740641026] [2024-12-02 14:45:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740641026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:08,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:45:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118241606] [2024-12-02 14:45:08,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:08,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:08,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:08,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:08,688 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:09,378 INFO L93 Difference]: Finished difference Result 1194 states and 1821 transitions. [2024-12-02 14:45:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 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 14:45:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:09,382 INFO L225 Difference]: With dead ends: 1194 [2024-12-02 14:45:09,382 INFO L226 Difference]: Without dead ends: 784 [2024-12-02 14:45:09,384 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 14:45:09,384 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:09,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 154 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-12-02 14:45:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-12-02 14:45:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3742017879948913) internal successors, (1076), 783 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1076 transitions. [2024-12-02 14:45:09,412 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1076 transitions. Word has length 127 [2024-12-02 14:45:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:09,412 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1076 transitions. [2024-12-02 14:45:09,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1076 transitions. [2024-12-02 14:45:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 14:45:09,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:09,415 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:09,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:45:09,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:09,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash 834203477, now seen corresponding path program 1 times [2024-12-02 14:45:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:09,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007209447] [2024-12-02 14:45:09,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:09,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007209447] [2024-12-02 14:45:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007209447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:09,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:09,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:45:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516051818] [2024-12-02 14:45:09,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:09,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:09,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:09,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:09,841 INFO L87 Difference]: Start difference. First operand 784 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,584 INFO L93 Difference]: Finished difference Result 1936 states and 2599 transitions. [2024-12-02 14:45:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-12-02 14:45:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,589 INFO L225 Difference]: With dead ends: 1936 [2024-12-02 14:45:10,589 INFO L226 Difference]: Without dead ends: 1154 [2024-12-02 14:45:10,590 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 14:45:10,591 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:10,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-12-02 14:45:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-12-02 14:45:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2024-12-02 14:45:10,622 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 131 [2024-12-02 14:45:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,622 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2024-12-02 14:45:10,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2024-12-02 14:45:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 14:45:10,625 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,625 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:10,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:45:10,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash 461291020, now seen corresponding path program 1 times [2024-12-02 14:45:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260349361] [2024-12-02 14:45:10,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260349361] [2024-12-02 14:45:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260349361] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861329476] [2024-12-02 14:45:10,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:10,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:10,923 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,732 INFO L93 Difference]: Finished difference Result 2679 states and 3481 transitions. [2024-12-02 14:45:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-12-02 14:45:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:11,741 INFO L225 Difference]: With dead ends: 2679 [2024-12-02 14:45:11,741 INFO L226 Difference]: Without dead ends: 1712 [2024-12-02 14:45:11,742 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 14:45:11,743 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 145 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:11,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 332 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:45:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-12-02 14:45:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1521. [2024-12-02 14:45:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.255921052631579) internal successors, (1909), 1520 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1909 transitions. [2024-12-02 14:45:11,781 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1909 transitions. Word has length 173 [2024-12-02 14:45:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:11,782 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 1909 transitions. [2024-12-02 14:45:11,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1909 transitions. [2024-12-02 14:45:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-12-02 14:45:11,786 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:11,786 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:11,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:45:11,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:11,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1875503464, now seen corresponding path program 1 times [2024-12-02 14:45:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:11,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382715058] [2024-12-02 14:45:11,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-12-02 14:45:12,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:12,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382715058] [2024-12-02 14:45:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382715058] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:12,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:12,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:12,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225896120] [2024-12-02 14:45:12,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:12,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:12,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:12,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:12,225 INFO L87 Difference]: Start difference. First operand 1521 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:13,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:13,029 INFO L93 Difference]: Finished difference Result 3970 states and 4986 transitions. [2024-12-02 14:45:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 243 [2024-12-02 14:45:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:13,034 INFO L225 Difference]: With dead ends: 3970 [2024-12-02 14:45:13,034 INFO L226 Difference]: Without dead ends: 2451 [2024-12-02 14:45:13,036 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 14:45:13,036 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 180 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:13,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 159 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:45:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2024-12-02 14:45:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2450. [2024-12-02 14:45:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 1.2339730502245814) internal successors, (3022), 2449 states have internal predecessors, (3022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3022 transitions. [2024-12-02 14:45:13,068 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3022 transitions. Word has length 243 [2024-12-02 14:45:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:13,069 INFO L471 AbstractCegarLoop]: Abstraction has 2450 states and 3022 transitions. [2024-12-02 14:45:13,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3022 transitions. [2024-12-02 14:45:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 14:45:13,073 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:13,073 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:13,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:45:13,073 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:13,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -575038418, now seen corresponding path program 1 times [2024-12-02 14:45:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964622033] [2024-12-02 14:45:13,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-12-02 14:45:13,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964622033] [2024-12-02 14:45:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964622033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137595096] [2024-12-02 14:45:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:13,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:13,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:13,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:13,296 INFO L87 Difference]: Start difference. First operand 2450 states and 3022 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:14,167 INFO L93 Difference]: Finished difference Result 5638 states and 7017 transitions. [2024-12-02 14:45:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 280 [2024-12-02 14:45:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:14,176 INFO L225 Difference]: With dead ends: 5638 [2024-12-02 14:45:14,176 INFO L226 Difference]: Without dead ends: 3190 [2024-12-02 14:45:14,179 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 14:45:14,180 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 140 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:14,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 378 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:45:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2024-12-02 14:45:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2630. [2024-12-02 14:45:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2629 states have (on average 1.2286040319513123) internal successors, (3230), 2629 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3230 transitions. [2024-12-02 14:45:14,220 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3230 transitions. Word has length 280 [2024-12-02 14:45:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:14,220 INFO L471 AbstractCegarLoop]: Abstraction has 2630 states and 3230 transitions. [2024-12-02 14:45:14,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:14,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3230 transitions. [2024-12-02 14:45:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-12-02 14:45:14,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:14,225 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:14,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:45:14,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:14,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 94013981, now seen corresponding path program 1 times [2024-12-02 14:45:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882024552] [2024-12-02 14:45:14,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:14,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882024552] [2024-12-02 14:45:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882024552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:14,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:14,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311997492] [2024-12-02 14:45:14,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:14,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:14,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:14,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:14,556 INFO L87 Difference]: Start difference. First operand 2630 states and 3230 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:15,767 INFO L93 Difference]: Finished difference Result 8042 states and 9930 transitions. [2024-12-02 14:45:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 321 [2024-12-02 14:45:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:15,778 INFO L225 Difference]: With dead ends: 8042 [2024-12-02 14:45:15,778 INFO L226 Difference]: Without dead ends: 5414 [2024-12-02 14:45:15,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:15,782 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 230 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:15,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 91 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:45:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2024-12-02 14:45:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 5227. [2024-12-02 14:45:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 1.2085725220053578) internal successors, (6316), 5226 states have internal predecessors, (6316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 6316 transitions. [2024-12-02 14:45:15,895 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 6316 transitions. Word has length 321 [2024-12-02 14:45:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:15,896 INFO L471 AbstractCegarLoop]: Abstraction has 5227 states and 6316 transitions. [2024-12-02 14:45:15,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 6316 transitions. [2024-12-02 14:45:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-12-02 14:45:15,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:15,906 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:45:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:45:15,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:15,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 471217609, now seen corresponding path program 1 times [2024-12-02 14:45:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819207180] [2024-12-02 14:45:15,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 14:45:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:16,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819207180] [2024-12-02 14:45:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819207180] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994013963] [2024-12-02 14:45:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:16,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:16,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:16,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:16,196 INFO L87 Difference]: Start difference. First operand 5227 states and 6316 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:16,984 INFO L93 Difference]: Finished difference Result 10081 states and 12247 transitions. [2024-12-02 14:45:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 367 [2024-12-02 14:45:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:16,999 INFO L225 Difference]: With dead ends: 10081 [2024-12-02 14:45:16,999 INFO L226 Difference]: Without dead ends: 5224 [2024-12-02 14:45:17,003 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 14:45:17,003 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 151 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:17,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 304 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:17,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2024-12-02 14:45:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5223. [2024-12-02 14:45:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 1.1721562619685943) internal successors, (6121), 5222 states have internal predecessors, (6121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 6121 transitions. [2024-12-02 14:45:17,093 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 6121 transitions. Word has length 367 [2024-12-02 14:45:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:17,094 INFO L471 AbstractCegarLoop]: Abstraction has 5223 states and 6121 transitions. [2024-12-02 14:45:17,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 6121 transitions. [2024-12-02 14:45:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-12-02 14:45:17,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:17,101 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:45:17,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:45:17,101 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:17,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1789756958, now seen corresponding path program 1 times [2024-12-02 14:45:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194883217] [2024-12-02 14:45:17,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-12-02 14:45:17,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:17,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194883217] [2024-12-02 14:45:17,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194883217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:17,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:17,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:17,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918841369] [2024-12-02 14:45:17,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:17,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:17,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:17,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:17,311 INFO L87 Difference]: Start difference. First operand 5223 states and 6121 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:18,102 INFO L93 Difference]: Finished difference Result 11741 states and 13889 transitions. [2024-12-02 14:45:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 372 [2024-12-02 14:45:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:18,113 INFO L225 Difference]: With dead ends: 11741 [2024-12-02 14:45:18,113 INFO L226 Difference]: Without dead ends: 6888 [2024-12-02 14:45:18,115 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 14:45:18,116 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 118 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:18,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 362 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2024-12-02 14:45:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6700. [2024-12-02 14:45:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.1576354679802956) internal successors, (7755), 6699 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 7755 transitions. [2024-12-02 14:45:18,212 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 7755 transitions. Word has length 372 [2024-12-02 14:45:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:18,213 INFO L471 AbstractCegarLoop]: Abstraction has 6700 states and 7755 transitions. [2024-12-02 14:45:18,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 7755 transitions. [2024-12-02 14:45:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2024-12-02 14:45:18,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:18,221 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-12-02 14:45:18,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:45:18,221 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:18,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash -152091538, now seen corresponding path program 1 times [2024-12-02 14:45:18,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:18,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062568213] [2024-12-02 14:45:18,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-12-02 14:45:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062568213] [2024-12-02 14:45:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062568213] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082180997] [2024-12-02 14:45:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:18,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:18,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:18,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:18,446 INFO L87 Difference]: Start difference. First operand 6700 states and 7755 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:19,228 INFO L93 Difference]: Finished difference Result 16527 states and 19323 transitions. [2024-12-02 14:45:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 386 [2024-12-02 14:45:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:19,244 INFO L225 Difference]: With dead ends: 16527 [2024-12-02 14:45:19,244 INFO L226 Difference]: Without dead ends: 10197 [2024-12-02 14:45:19,248 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 14:45:19,249 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 158 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:19,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 130 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2024-12-02 14:45:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 9827. [2024-12-02 14:45:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9827 states, 9826 states have (on average 1.1501119478933441) internal successors, (11301), 9826 states have internal predecessors, (11301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9827 states to 9827 states and 11301 transitions. [2024-12-02 14:45:19,342 INFO L78 Accepts]: Start accepts. Automaton has 9827 states and 11301 transitions. Word has length 386 [2024-12-02 14:45:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:19,343 INFO L471 AbstractCegarLoop]: Abstraction has 9827 states and 11301 transitions. [2024-12-02 14:45:19,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9827 states and 11301 transitions. [2024-12-02 14:45:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-12-02 14:45:19,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:19,354 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:45:19,354 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:19,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1552606349, now seen corresponding path program 1 times [2024-12-02 14:45:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:19,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468801999] [2024-12-02 14:45:19,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 14:45:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468801999] [2024-12-02 14:45:19,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468801999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:19,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189325013] [2024-12-02 14:45:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:19,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:19,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:19,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:19,802 INFO L87 Difference]: Start difference. First operand 9827 states and 11301 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:20,513 INFO L93 Difference]: Finished difference Result 21125 states and 24424 transitions. [2024-12-02 14:45:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 401 [2024-12-02 14:45:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:20,528 INFO L225 Difference]: With dead ends: 21125 [2024-12-02 14:45:20,529 INFO L226 Difference]: Without dead ends: 11668 [2024-12-02 14:45:20,534 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 14:45:20,535 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 130 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:20,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 77 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:45:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11668 states. [2024-12-02 14:45:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11668 to 11295. [2024-12-02 14:45:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11295 states, 11294 states have (on average 1.1512307419868957) internal successors, (13002), 11294 states have internal predecessors, (13002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 13002 transitions. [2024-12-02 14:45:20,655 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 13002 transitions. Word has length 401 [2024-12-02 14:45:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:20,656 INFO L471 AbstractCegarLoop]: Abstraction has 11295 states and 13002 transitions. [2024-12-02 14:45:20,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 13002 transitions. [2024-12-02 14:45:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-12-02 14:45:20,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:20,661 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:45:20,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:45:20,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:20,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 111498109, now seen corresponding path program 1 times [2024-12-02 14:45:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468712754] [2024-12-02 14:45:20,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:20,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:21,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:21,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468712754] [2024-12-02 14:45:21,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468712754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:21,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:21,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71097991] [2024-12-02 14:45:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:21,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:21,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:21,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:21,141 INFO L87 Difference]: Start difference. First operand 11295 states and 13002 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:22,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:22,129 INFO L93 Difference]: Finished difference Result 26118 states and 30099 transitions. [2024-12-02 14:45:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:22,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 402 [2024-12-02 14:45:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:22,141 INFO L225 Difference]: With dead ends: 26118 [2024-12-02 14:45:22,142 INFO L226 Difference]: Without dead ends: 15193 [2024-12-02 14:45:22,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:22,148 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 207 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:22,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 156 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:45:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15193 states. [2024-12-02 14:45:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15193 to 13713. [2024-12-02 14:45:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13713 states, 13712 states have (on average 1.1468786464410734) internal successors, (15726), 13712 states have internal predecessors, (15726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13713 states to 13713 states and 15726 transitions. [2024-12-02 14:45:22,285 INFO L78 Accepts]: Start accepts. Automaton has 13713 states and 15726 transitions. Word has length 402 [2024-12-02 14:45:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:22,285 INFO L471 AbstractCegarLoop]: Abstraction has 13713 states and 15726 transitions. [2024-12-02 14:45:22,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 13713 states and 15726 transitions. [2024-12-02 14:45:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-12-02 14:45:22,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:22,292 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:45:22,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:45:22,292 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:22,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1118876028, now seen corresponding path program 1 times [2024-12-02 14:45:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:22,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278634732] [2024-12-02 14:45:22,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 176 proven. 203 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-12-02 14:45:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278634732] [2024-12-02 14:45:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278634732] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208822626] [2024-12-02 14:45:22,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:22,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:22,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:22,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:45:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:22,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:45:22,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 14:45:23,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208822626] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:23,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:23,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 14:45:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273545433] [2024-12-02 14:45:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:23,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:23,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:23,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:23,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:23,305 INFO L87 Difference]: Start difference. First operand 13713 states and 15726 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:24,586 INFO L93 Difference]: Finished difference Result 32407 states and 37378 transitions. [2024-12-02 14:45:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2024-12-02 14:45:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:24,606 INFO L225 Difference]: With dead ends: 32407 [2024-12-02 14:45:24,606 INFO L226 Difference]: Without dead ends: 19064 [2024-12-02 14:45:24,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:24,617 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 202 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:24,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 110 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:45:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19064 states. [2024-12-02 14:45:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19064 to 19052. [2024-12-02 14:45:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19052 states, 19051 states have (on average 1.1395202351582594) internal successors, (21709), 19051 states have internal predecessors, (21709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19052 states to 19052 states and 21709 transitions. [2024-12-02 14:45:24,811 INFO L78 Accepts]: Start accepts. Automaton has 19052 states and 21709 transitions. Word has length 412 [2024-12-02 14:45:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:24,812 INFO L471 AbstractCegarLoop]: Abstraction has 19052 states and 21709 transitions. [2024-12-02 14:45:24,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19052 states and 21709 transitions. [2024-12-02 14:45:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-12-02 14:45:24,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:24,838 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:24,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:45:25,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 14:45:25,039 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:25,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash -761542586, now seen corresponding path program 1 times [2024-12-02 14:45:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887169457] [2024-12-02 14:45:25,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:25,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-12-02 14:45:25,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:25,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887169457] [2024-12-02 14:45:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887169457] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:25,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615863472] [2024-12-02 14:45:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:25,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:25,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:25,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:25,364 INFO L87 Difference]: Start difference. First operand 19052 states and 21709 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:26,136 INFO L93 Difference]: Finished difference Result 39573 states and 45097 transitions. [2024-12-02 14:45:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:26,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 500 [2024-12-02 14:45:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:26,151 INFO L225 Difference]: With dead ends: 39573 [2024-12-02 14:45:26,152 INFO L226 Difference]: Without dead ends: 19047 [2024-12-02 14:45:26,162 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 14:45:26,162 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 196 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:26,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 360 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 14:45:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19047 states. [2024-12-02 14:45:26,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19047 to 18303. [2024-12-02 14:45:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18303 states, 18302 states have (on average 1.115725057370779) internal successors, (20420), 18302 states have internal predecessors, (20420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18303 states to 18303 states and 20420 transitions. [2024-12-02 14:45:26,353 INFO L78 Accepts]: Start accepts. Automaton has 18303 states and 20420 transitions. Word has length 500 [2024-12-02 14:45:26,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:26,353 INFO L471 AbstractCegarLoop]: Abstraction has 18303 states and 20420 transitions. [2024-12-02 14:45:26,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:26,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18303 states and 20420 transitions. [2024-12-02 14:45:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-12-02 14:45:26,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:26,371 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:26,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:45:26,372 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:26,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1708266968, now seen corresponding path program 1 times [2024-12-02 14:45:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:26,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513927088] [2024-12-02 14:45:26,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 447 proven. 85 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 14:45:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513927088] [2024-12-02 14:45:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513927088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185766019] [2024-12-02 14:45:26,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:26,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:26,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:45:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:27,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:45:27,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 14:45:27,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185766019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:27,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:27,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-12-02 14:45:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690796609] [2024-12-02 14:45:27,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:27,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:27,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:27,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:27,605 INFO L87 Difference]: Start difference. First operand 18303 states and 20420 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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 14:45:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:28,207 INFO L93 Difference]: Finished difference Result 37162 states and 41451 transitions. [2024-12-02 14:45:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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 507 [2024-12-02 14:45:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:28,221 INFO L225 Difference]: With dead ends: 37162 [2024-12-02 14:45:28,221 INFO L226 Difference]: Without dead ends: 19229 [2024-12-02 14:45:28,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:28,229 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 83 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:28,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 162 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:45:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19229 states. [2024-12-02 14:45:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19229 to 18855. [2024-12-02 14:45:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18855 states, 18854 states have (on average 1.1102683780630105) internal successors, (20933), 18854 states have internal predecessors, (20933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18855 states to 18855 states and 20933 transitions. [2024-12-02 14:45:28,394 INFO L78 Accepts]: Start accepts. Automaton has 18855 states and 20933 transitions. Word has length 507 [2024-12-02 14:45:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:28,394 INFO L471 AbstractCegarLoop]: Abstraction has 18855 states and 20933 transitions. [2024-12-02 14:45:28,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 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 14:45:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 18855 states and 20933 transitions. [2024-12-02 14:45:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2024-12-02 14:45:28,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:28,405 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:28,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:45:28,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 14:45:28,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:28,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968281, now seen corresponding path program 1 times [2024-12-02 14:45:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:28,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565716686] [2024-12-02 14:45:28,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 508 proven. 24 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 14:45:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565716686] [2024-12-02 14:45:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565716686] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140467572] [2024-12-02 14:45:29,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:29,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:29,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:45:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:29,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:45:29,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 14:45:29,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:29,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140467572] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:29,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:29,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-12-02 14:45:29,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859340494] [2024-12-02 14:45:29,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:29,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:29,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:29,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:45:29,657 INFO L87 Difference]: Start difference. First operand 18855 states and 20933 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:30,578 INFO L93 Difference]: Finished difference Result 39730 states and 44007 transitions. [2024-12-02 14:45:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 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 508 [2024-12-02 14:45:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:30,591 INFO L225 Difference]: With dead ends: 39730 [2024-12-02 14:45:30,591 INFO L226 Difference]: Without dead ends: 21245 [2024-12-02 14:45:30,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:45:30,601 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 275 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:30,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 176 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:45:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21245 states. [2024-12-02 14:45:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21245 to 18109. [2024-12-02 14:45:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18109 states, 18108 states have (on average 1.1061961563949636) internal successors, (20031), 18108 states have internal predecessors, (20031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18109 states to 18109 states and 20031 transitions. [2024-12-02 14:45:30,764 INFO L78 Accepts]: Start accepts. Automaton has 18109 states and 20031 transitions. Word has length 508 [2024-12-02 14:45:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:30,765 INFO L471 AbstractCegarLoop]: Abstraction has 18109 states and 20031 transitions. [2024-12-02 14:45:30,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 18109 states and 20031 transitions. [2024-12-02 14:45:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 14:45:30,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:30,775 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-12-02 14:45:30,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:45:30,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 14:45:30,975 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:30,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1134199501, now seen corresponding path program 1 times [2024-12-02 14:45:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899456854] [2024-12-02 14:45:30,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:30,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 572 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899456854] [2024-12-02 14:45:32,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899456854] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:32,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107754317] [2024-12-02 14:45:32,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:32,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:32,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:33,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:45:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:33,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:45:33,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 14:45:33,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:33,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107754317] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:33,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:33,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-12-02 14:45:33,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863601727] [2024-12-02 14:45:33,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:33,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:33,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:33,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:33,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:33,348 INFO L87 Difference]: Start difference. First operand 18109 states and 20031 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:34,056 INFO L93 Difference]: Finished difference Result 37329 states and 41284 transitions. [2024-12-02 14:45:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 535 [2024-12-02 14:45:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:34,070 INFO L225 Difference]: With dead ends: 37329 [2024-12-02 14:45:34,070 INFO L226 Difference]: Without dead ends: 19590 [2024-12-02 14:45:34,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:34,078 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 91 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:34,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 342 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:45:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19590 states. [2024-12-02 14:45:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19590 to 18475. [2024-12-02 14:45:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 1.1047417992854822) internal successors, (20409), 18474 states have internal predecessors, (20409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 20409 transitions. [2024-12-02 14:45:34,283 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 20409 transitions. Word has length 535 [2024-12-02 14:45:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:34,283 INFO L471 AbstractCegarLoop]: Abstraction has 18475 states and 20409 transitions. [2024-12-02 14:45:34,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:34,283 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 20409 transitions. [2024-12-02 14:45:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-12-02 14:45:34,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:34,293 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:34,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:45:34,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 14:45:34,493 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:34,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1764270116, now seen corresponding path program 1 times [2024-12-02 14:45:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712895766] [2024-12-02 14:45:34,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2024-12-02 14:45:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712895766] [2024-12-02 14:45:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712895766] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:34,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:34,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927681381] [2024-12-02 14:45:34,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:34,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:34,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:34,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:34,756 INFO L87 Difference]: Start difference. First operand 18475 states and 20409 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:35,910 INFO L93 Difference]: Finished difference Result 41564 states and 45924 transitions. [2024-12-02 14:45:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 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 540 [2024-12-02 14:45:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:35,928 INFO L225 Difference]: With dead ends: 41564 [2024-12-02 14:45:35,928 INFO L226 Difference]: Without dead ends: 23459 [2024-12-02 14:45:35,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:35,938 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 310 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:35,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 341 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:45:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23459 states. [2024-12-02 14:45:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23459 to 18284. [2024-12-02 14:45:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18284 states, 18283 states have (on average 1.1028277634961439) internal successors, (20163), 18283 states have internal predecessors, (20163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18284 states to 18284 states and 20163 transitions. [2024-12-02 14:45:36,155 INFO L78 Accepts]: Start accepts. Automaton has 18284 states and 20163 transitions. Word has length 540 [2024-12-02 14:45:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:36,155 INFO L471 AbstractCegarLoop]: Abstraction has 18284 states and 20163 transitions. [2024-12-02 14:45:36,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18284 states and 20163 transitions. [2024-12-02 14:45:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-12-02 14:45:36,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:36,167 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:36,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:45:36,168 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:36,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2068323999, now seen corresponding path program 1 times [2024-12-02 14:45:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517317550] [2024-12-02 14:45:36,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:36,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-12-02 14:45:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517317550] [2024-12-02 14:45:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517317550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:45:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829044600] [2024-12-02 14:45:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:36,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:36,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:36,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:36,424 INFO L87 Difference]: Start difference. First operand 18284 states and 20163 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:36,825 INFO L93 Difference]: Finished difference Result 35823 states and 39522 transitions. [2024-12-02 14:45:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 631 [2024-12-02 14:45:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:36,838 INFO L225 Difference]: With dead ends: 35823 [2024-12-02 14:45:36,838 INFO L226 Difference]: Without dead ends: 17909 [2024-12-02 14:45:36,845 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 14:45:36,845 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:36,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 34 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:45:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2024-12-02 14:45:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 17906. [2024-12-02 14:45:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17906 states, 17905 states have (on average 1.1019268360793075) internal successors, (19730), 17905 states have internal predecessors, (19730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17906 states to 17906 states and 19730 transitions. [2024-12-02 14:45:37,010 INFO L78 Accepts]: Start accepts. Automaton has 17906 states and 19730 transitions. Word has length 631 [2024-12-02 14:45:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:37,010 INFO L471 AbstractCegarLoop]: Abstraction has 17906 states and 19730 transitions. [2024-12-02 14:45:37,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 2 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17906 states and 19730 transitions. [2024-12-02 14:45:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-12-02 14:45:37,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:37,028 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:37,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:45:37,028 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:37,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1252408039, now seen corresponding path program 1 times [2024-12-02 14:45:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639480467] [2024-12-02 14:45:37,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-12-02 14:45:37,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:37,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639480467] [2024-12-02 14:45:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639480467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:37,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:37,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375325923] [2024-12-02 14:45:37,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:37,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:37,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:37,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:37,669 INFO L87 Difference]: Start difference. First operand 17906 states and 19730 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:38,318 INFO L93 Difference]: Finished difference Result 38022 states and 41945 transitions. [2024-12-02 14:45:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 651 [2024-12-02 14:45:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:38,333 INFO L225 Difference]: With dead ends: 38022 [2024-12-02 14:45:38,333 INFO L226 Difference]: Without dead ends: 20486 [2024-12-02 14:45:38,341 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 14:45:38,341 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 124 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:38,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 74 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:45:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20486 states. [2024-12-02 14:45:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20486 to 18274. [2024-12-02 14:45:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18274 states, 18273 states have (on average 1.0996552290264325) internal successors, (20094), 18273 states have internal predecessors, (20094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:38,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18274 states to 18274 states and 20094 transitions. [2024-12-02 14:45:38,519 INFO L78 Accepts]: Start accepts. Automaton has 18274 states and 20094 transitions. Word has length 651 [2024-12-02 14:45:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:38,520 INFO L471 AbstractCegarLoop]: Abstraction has 18274 states and 20094 transitions. [2024-12-02 14:45:38,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18274 states and 20094 transitions. [2024-12-02 14:45:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2024-12-02 14:45:38,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:38,536 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2024-12-02 14:45:38,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:45:38,536 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:38,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -352651479, now seen corresponding path program 1 times [2024-12-02 14:45:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:38,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938922527] [2024-12-02 14:45:38,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-12-02 14:45:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938922527] [2024-12-02 14:45:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938922527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777455432] [2024-12-02 14:45:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:38,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:38,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:38,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:38,763 INFO L87 Difference]: Start difference. First operand 18274 states and 20094 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 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 14:45:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:39,380 INFO L93 Difference]: Finished difference Result 36728 states and 40390 transitions. [2024-12-02 14:45:39,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:39,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 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 652 [2024-12-02 14:45:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:39,392 INFO L225 Difference]: With dead ends: 36728 [2024-12-02 14:45:39,392 INFO L226 Difference]: Without dead ends: 18824 [2024-12-02 14:45:39,400 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 14:45:39,400 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 87 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:39,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 337 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:45:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18824 states. [2024-12-02 14:45:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18824 to 17166. [2024-12-02 14:45:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17166 states, 17165 states have (on average 1.0982813865423828) internal successors, (18852), 17165 states have internal predecessors, (18852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17166 states to 17166 states and 18852 transitions. [2024-12-02 14:45:39,573 INFO L78 Accepts]: Start accepts. Automaton has 17166 states and 18852 transitions. Word has length 652 [2024-12-02 14:45:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:39,574 INFO L471 AbstractCegarLoop]: Abstraction has 17166 states and 18852 transitions. [2024-12-02 14:45:39,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 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 14:45:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 17166 states and 18852 transitions. [2024-12-02 14:45:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-12-02 14:45:39,588 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:39,588 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:39,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:45:39,588 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:39,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1883102673, now seen corresponding path program 1 times [2024-12-02 14:45:39,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359219575] [2024-12-02 14:45:39,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1284 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-12-02 14:45:39,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:39,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359219575] [2024-12-02 14:45:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359219575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:39,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860896826] [2024-12-02 14:45:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:39,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:39,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:39,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:39,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:39,909 INFO L87 Difference]: Start difference. First operand 17166 states and 18852 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:40,576 INFO L93 Difference]: Finished difference Result 34895 states and 38318 transitions. [2024-12-02 14:45:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 708 [2024-12-02 14:45:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:40,588 INFO L225 Difference]: With dead ends: 34895 [2024-12-02 14:45:40,588 INFO L226 Difference]: Without dead ends: 17915 [2024-12-02 14:45:40,595 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 14:45:40,597 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 100 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:40,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 159 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:45:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17915 states. [2024-12-02 14:45:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17915 to 17718. [2024-12-02 14:45:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17718 states, 17717 states have (on average 1.0899700852288763) internal successors, (19311), 17717 states have internal predecessors, (19311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17718 states to 17718 states and 19311 transitions. [2024-12-02 14:45:40,755 INFO L78 Accepts]: Start accepts. Automaton has 17718 states and 19311 transitions. Word has length 708 [2024-12-02 14:45:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:40,756 INFO L471 AbstractCegarLoop]: Abstraction has 17718 states and 19311 transitions. [2024-12-02 14:45:40,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17718 states and 19311 transitions. [2024-12-02 14:45:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2024-12-02 14:45:40,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:40,767 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:40,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:45:40,767 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:40,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash 965344910, now seen corresponding path program 1 times [2024-12-02 14:45:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582064285] [2024-12-02 14:45:40,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1789 backedges. 1236 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-12-02 14:45:41,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:41,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582064285] [2024-12-02 14:45:41,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582064285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:41,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677302933] [2024-12-02 14:45:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:41,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:41,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:41,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:41,248 INFO L87 Difference]: Start difference. First operand 17718 states and 19311 transitions. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:42,215 INFO L93 Difference]: Finished difference Result 40047 states and 43618 transitions. [2024-12-02 14:45:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 709 [2024-12-02 14:45:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:42,233 INFO L225 Difference]: With dead ends: 40047 [2024-12-02 14:45:42,233 INFO L226 Difference]: Without dead ends: 21595 [2024-12-02 14:45:42,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:42,242 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 219 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:42,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 68 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:45:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21595 states. [2024-12-02 14:45:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21595 to 16246. [2024-12-02 14:45:42,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16246 states, 16245 states have (on average 1.0899969221298862) internal successors, (17707), 16245 states have internal predecessors, (17707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 17707 transitions. [2024-12-02 14:45:42,407 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 17707 transitions. Word has length 709 [2024-12-02 14:45:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:42,407 INFO L471 AbstractCegarLoop]: Abstraction has 16246 states and 17707 transitions. [2024-12-02 14:45:42,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 17707 transitions. [2024-12-02 14:45:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2024-12-02 14:45:42,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:42,418 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-12-02 14:45:42,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:45:42,418 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:42,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2095403203, now seen corresponding path program 1 times [2024-12-02 14:45:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:42,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334821830] [2024-12-02 14:45:42,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 1095 proven. 0 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2024-12-02 14:45:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334821830] [2024-12-02 14:45:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334821830] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:43,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:43,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:43,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128313631] [2024-12-02 14:45:43,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:43,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:43,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:43,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:43,016 INFO L87 Difference]: Start difference. First operand 16246 states and 17707 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:43,974 INFO L93 Difference]: Finished difference Result 33602 states and 36654 transitions. [2024-12-02 14:45:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:43,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 794 [2024-12-02 14:45:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:43,985 INFO L225 Difference]: With dead ends: 33602 [2024-12-02 14:45:43,985 INFO L226 Difference]: Without dead ends: 17726 [2024-12-02 14:45:43,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:43,992 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 222 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:43,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 106 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:45:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17726 states. [2024-12-02 14:45:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17726 to 16434. [2024-12-02 14:45:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16434 states, 16433 states have (on average 1.0891498813363354) internal successors, (17898), 16433 states have internal predecessors, (17898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16434 states to 16434 states and 17898 transitions. [2024-12-02 14:45:44,143 INFO L78 Accepts]: Start accepts. Automaton has 16434 states and 17898 transitions. Word has length 794 [2024-12-02 14:45:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:44,144 INFO L471 AbstractCegarLoop]: Abstraction has 16434 states and 17898 transitions. [2024-12-02 14:45:44,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16434 states and 17898 transitions. [2024-12-02 14:45:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-12-02 14:45:44,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:44,155 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:44,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:45:44,156 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:44,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1612885747, now seen corresponding path program 1 times [2024-12-02 14:45:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:44,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978975400] [2024-12-02 14:45:44,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2469 backedges. 1886 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-12-02 14:45:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978975400] [2024-12-02 14:45:44,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978975400] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418989521] [2024-12-02 14:45:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:44,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:44,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:44,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:44,976 INFO L87 Difference]: Start difference. First operand 16434 states and 17898 transitions. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:46,019 INFO L93 Difference]: Finished difference Result 40061 states and 43630 transitions. [2024-12-02 14:45:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 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 860 [2024-12-02 14:45:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:46,035 INFO L225 Difference]: With dead ends: 40061 [2024-12-02 14:45:46,035 INFO L226 Difference]: Without dead ends: 23445 [2024-12-02 14:45:46,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:46,044 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 226 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:46,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 87 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:45:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23445 states. [2024-12-02 14:45:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23445 to 16623. [2024-12-02 14:45:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16623 states, 16622 states have (on average 1.0876549151726627) internal successors, (18079), 16622 states have internal predecessors, (18079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16623 states to 16623 states and 18079 transitions. [2024-12-02 14:45:46,262 INFO L78 Accepts]: Start accepts. Automaton has 16623 states and 18079 transitions. Word has length 860 [2024-12-02 14:45:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:46,262 INFO L471 AbstractCegarLoop]: Abstraction has 16623 states and 18079 transitions. [2024-12-02 14:45:46,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16623 states and 18079 transitions. [2024-12-02 14:45:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2024-12-02 14:45:46,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:46,275 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:46,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 14:45:46,275 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:46,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1417283486, now seen corresponding path program 1 times [2024-12-02 14:45:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:46,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875657838] [2024-12-02 14:45:46,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 2290 proven. 830 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-12-02 14:45:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875657838] [2024-12-02 14:45:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875657838] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651513191] [2024-12-02 14:45:48,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:48,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:48,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:48,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:48,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:45:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:48,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:45:48,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3855 backedges. 2335 proven. 0 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-12-02 14:45:48,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651513191] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 14:45:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691069947] [2024-12-02 14:45:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:48,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:48,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:48,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:45:48,727 INFO L87 Difference]: Start difference. First operand 16623 states and 18079 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:49,279 INFO L93 Difference]: Finished difference Result 33440 states and 36395 transitions. [2024-12-02 14:45:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 1067 [2024-12-02 14:45:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:49,291 INFO L225 Difference]: With dead ends: 33440 [2024-12-02 14:45:49,291 INFO L226 Difference]: Without dead ends: 17187 [2024-12-02 14:45:49,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1068 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:45:49,298 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 104 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:49,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 328 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:45:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17187 states. [2024-12-02 14:45:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17187 to 17179. [2024-12-02 14:45:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17179 states, 17178 states have (on average 1.0861567120735824) internal successors, (18658), 17178 states have internal predecessors, (18658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17179 states to 17179 states and 18658 transitions. [2024-12-02 14:45:49,452 INFO L78 Accepts]: Start accepts. Automaton has 17179 states and 18658 transitions. Word has length 1067 [2024-12-02 14:45:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:49,453 INFO L471 AbstractCegarLoop]: Abstraction has 17179 states and 18658 transitions. [2024-12-02 14:45:49,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:49,453 INFO L276 IsEmpty]: Start isEmpty. Operand 17179 states and 18658 transitions. [2024-12-02 14:45:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2024-12-02 14:45:49,467 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:49,467 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:49,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:45:49,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:45:49,668 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:49,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1678456145, now seen corresponding path program 1 times [2024-12-02 14:45:49,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:49,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166909385] [2024-12-02 14:45:49,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:49,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4049 backedges. 2161 proven. 0 refuted. 0 times theorem prover too weak. 1888 trivial. 0 not checked. [2024-12-02 14:45:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166909385] [2024-12-02 14:45:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166909385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:45:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309488515] [2024-12-02 14:45:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:50,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:50,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:50,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:50,166 INFO L87 Difference]: Start difference. First operand 17179 states and 18658 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:50,610 INFO L93 Difference]: Finished difference Result 33614 states and 36527 transitions. [2024-12-02 14:45:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 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 1132 [2024-12-02 14:45:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:50,624 INFO L225 Difference]: With dead ends: 33614 [2024-12-02 14:45:50,624 INFO L226 Difference]: Without dead ends: 16805 [2024-12-02 14:45:50,633 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 14:45:50,634 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:50,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 34 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:45:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16805 states. [2024-12-02 14:45:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16805 to 16805. [2024-12-02 14:45:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16805 states, 16804 states have (on average 1.0858129016900737) internal successors, (18246), 16804 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16805 states to 16805 states and 18246 transitions. [2024-12-02 14:45:50,856 INFO L78 Accepts]: Start accepts. Automaton has 16805 states and 18246 transitions. Word has length 1132 [2024-12-02 14:45:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:50,856 INFO L471 AbstractCegarLoop]: Abstraction has 16805 states and 18246 transitions. [2024-12-02 14:45:50,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16805 states and 18246 transitions. [2024-12-02 14:45:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2024-12-02 14:45:50,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:50,870 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 14:45:50,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:45:50,871 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:50,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash 750491527, now seen corresponding path program 1 times [2024-12-02 14:45:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467379412] [2024-12-02 14:45:50,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4066 backedges. 1501 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-12-02 14:45:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467379412] [2024-12-02 14:45:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467379412] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:52,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:52,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:52,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50420547] [2024-12-02 14:45:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:52,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:52,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:52,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:52,556 INFO L87 Difference]: Start difference. First operand 16805 states and 18246 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:53,504 INFO L93 Difference]: Finished difference Result 33793 states and 36698 transitions. [2024-12-02 14:45:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 1156 [2024-12-02 14:45:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:53,520 INFO L225 Difference]: With dead ends: 33793 [2024-12-02 14:45:53,521 INFO L226 Difference]: Without dead ends: 17174 [2024-12-02 14:45:53,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:53,528 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 206 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:53,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 85 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:45:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17174 states. [2024-12-02 14:45:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17174 to 17173. [2024-12-02 14:45:53,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17173 states, 17172 states have (on average 1.084614488702539) internal successors, (18625), 17172 states have internal predecessors, (18625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17173 states to 17173 states and 18625 transitions. [2024-12-02 14:45:53,678 INFO L78 Accepts]: Start accepts. Automaton has 17173 states and 18625 transitions. Word has length 1156 [2024-12-02 14:45:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:53,678 INFO L471 AbstractCegarLoop]: Abstraction has 17173 states and 18625 transitions. [2024-12-02 14:45:53,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17173 states and 18625 transitions. [2024-12-02 14:45:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2024-12-02 14:45:53,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:53,699 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 14:45:53,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 14:45:53,699 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:53,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1701280617, now seen corresponding path program 1 times [2024-12-02 14:45:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147057877] [2024-12-02 14:45:53,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4127 backedges. 2240 proven. 73 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2024-12-02 14:45:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147057877] [2024-12-02 14:45:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147057877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328451153] [2024-12-02 14:45:55,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:55,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:55,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:55,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:55,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:45:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:55,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:45:55,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4127 backedges. 2598 proven. 0 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-12-02 14:45:55,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328451153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 14:45:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192757733] [2024-12-02 14:45:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:55,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:55,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:55,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:55,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:55,667 INFO L87 Difference]: Start difference. First operand 17173 states and 18625 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:56,313 INFO L93 Difference]: Finished difference Result 38587 states and 41863 transitions. [2024-12-02 14:45:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:56,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 1194 [2024-12-02 14:45:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:56,327 INFO L225 Difference]: With dead ends: 38587 [2024-12-02 14:45:56,327 INFO L226 Difference]: Without dead ends: 21784 [2024-12-02 14:45:56,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:56,334 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:56,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 315 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:45:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21784 states. [2024-12-02 14:45:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21784 to 17365. [2024-12-02 14:45:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17365 states, 17364 states have (on average 1.079474775397374) internal successors, (18744), 17364 states have internal predecessors, (18744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17365 states to 17365 states and 18744 transitions. [2024-12-02 14:45:56,511 INFO L78 Accepts]: Start accepts. Automaton has 17365 states and 18744 transitions. Word has length 1194 [2024-12-02 14:45:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:56,511 INFO L471 AbstractCegarLoop]: Abstraction has 17365 states and 18744 transitions. [2024-12-02 14:45:56,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:56,512 INFO L276 IsEmpty]: Start isEmpty. Operand 17365 states and 18744 transitions. [2024-12-02 14:45:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2024-12-02 14:45:56,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:56,528 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-12-02 14:45:56,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:45:56,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 14:45:56,728 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:56,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 164681189, now seen corresponding path program 1 times [2024-12-02 14:45:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860810500] [2024-12-02 14:45:56,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6001 backedges. 3683 proven. 811 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2024-12-02 14:45:59,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:59,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860810500] [2024-12-02 14:45:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860810500] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:59,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462652670] [2024-12-02 14:45:59,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:59,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:59,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:59,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:46:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:00,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 1700 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 14:46:00,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:46:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6001 backedges. 3704 proven. 0 refuted. 0 times theorem prover too weak. 2297 trivial. 0 not checked. [2024-12-02 14:46:00,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:46:00,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462652670] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:00,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:46:00,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 14:46:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247689217] [2024-12-02 14:46:00,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:00,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:46:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:00,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:46:00,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:46:00,612 INFO L87 Difference]: Start difference. First operand 17365 states and 18744 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:01,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:01,196 INFO L93 Difference]: Finished difference Result 35102 states and 37888 transitions. [2024-12-02 14:46:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:46:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 1355 [2024-12-02 14:46:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:01,209 INFO L225 Difference]: With dead ends: 35102 [2024-12-02 14:46:01,209 INFO L226 Difference]: Without dead ends: 17739 [2024-12-02 14:46:01,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1357 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:46:01,218 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 98 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:01,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 341 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:46:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17739 states. [2024-12-02 14:46:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17739 to 17001. [2024-12-02 14:46:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17001 states, 17000 states have (on average 1.0775294117647058) internal successors, (18318), 17000 states have internal predecessors, (18318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17001 states to 17001 states and 18318 transitions. [2024-12-02 14:46:01,410 INFO L78 Accepts]: Start accepts. Automaton has 17001 states and 18318 transitions. Word has length 1355 [2024-12-02 14:46:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:01,410 INFO L471 AbstractCegarLoop]: Abstraction has 17001 states and 18318 transitions. [2024-12-02 14:46:01,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17001 states and 18318 transitions. [2024-12-02 14:46:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2024-12-02 14:46:01,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:01,428 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-12-02 14:46:01,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:46:01,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:01,629 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:01,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -405637536, now seen corresponding path program 1 times [2024-12-02 14:46:01,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:01,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982096252] [2024-12-02 14:46:01,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 3845 proven. 206 refuted. 0 times theorem prover too weak. 2303 trivial. 0 not checked. [2024-12-02 14:46:03,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982096252] [2024-12-02 14:46:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982096252] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:46:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897337174] [2024-12-02 14:46:03,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:03,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:46:03,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:46:03,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:46:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:04,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:46:04,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:46:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 4220 proven. 282 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2024-12-02 14:46:07,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:46:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6354 backedges. 3750 proven. 323 refuted. 0 times theorem prover too weak. 2281 trivial. 0 not checked. [2024-12-02 14:46:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897337174] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:46:10,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:46:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 12 [2024-12-02 14:46:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486435783] [2024-12-02 14:46:10,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:46:10,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:46:10,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:10,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:46:10,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:46:10,540 INFO L87 Difference]: Start difference. First operand 17001 states and 18318 transitions. Second operand has 13 states, 13 states have (on average 62.30769230769231) internal successors, (810), 12 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:15,215 INFO L93 Difference]: Finished difference Result 26265 states and 28212 transitions. [2024-12-02 14:46:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 14:46:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 62.30769230769231) internal successors, (810), 12 states have internal predecessors, (810), 0 states have call successors, (0), 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 1441 [2024-12-02 14:46:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:15,218 INFO L225 Difference]: With dead ends: 26265 [2024-12-02 14:46:15,218 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 14:46:15,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2902 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:46:15,226 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 1860 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 7316 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 7691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 7316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:15,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 154 Invalid, 7691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 7316 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 14:46:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 14:46:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 14:46:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 14:46:15,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1441 [2024-12-02 14:46:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:15,228 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 14:46:15,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.30769230769231) internal successors, (810), 12 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 14:46:15,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 14:46:15,231 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 14:46:15,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:46:15,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:15,434 INFO L422 BasicCegarLoop]: Path program 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] [2024-12-02 14:46:15,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 14:46:37,120 WARN L286 SmtUtils]: Spent 21.68s on a formula simplification. DAG size of input: 569 DAG size of output: 613 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-12-02 14:46:39,571 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 14:46:39,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:46:39 BoogieIcfgContainer [2024-12-02 14:46:39,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 14:46:39,589 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 14:46:39,589 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 14:46:39,589 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 14:46:39,590 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:06" (3/4) ... [2024-12-02 14:46:39,592 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 14:46:39,608 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-12-02 14:46:39,609 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 14:46:39,610 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 14:46:39,611 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 14:46:39,737 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 14:46:39,737 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 14:46:39,737 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 14:46:39,738 INFO L158 Benchmark]: Toolchain (without parser) took 95494.61ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 115.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 202.9MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,738 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 83.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:46:39,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.45ms. Allocated memory is still 142.6MB. Free memory was 114.7MB in the beginning and 72.6MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.30ms. Allocated memory is still 142.6MB. Free memory was 72.3MB in the beginning and 55.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,738 INFO L158 Benchmark]: Boogie Preprocessor took 152.44ms. Allocated memory is still 142.6MB. Free memory was 55.7MB in the beginning and 84.8MB in the end (delta: -29.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,739 INFO L158 Benchmark]: RCFGBuilder took 1617.94ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 84.8MB in the beginning and 211.1MB in the end (delta: -126.3MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,739 INFO L158 Benchmark]: TraceAbstraction took 92907.48ms. Allocated memory was 318.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 211.1MB in the beginning and 1.2GB in the end (delta: -957.6MB). Peak memory consumption was 847.3MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,739 INFO L158 Benchmark]: Witness Printer took 148.14ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:46:39,740 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 83.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.45ms. Allocated memory is still 142.6MB. Free memory was 114.7MB in the beginning and 72.6MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.30ms. Allocated memory is still 142.6MB. Free memory was 72.3MB in the beginning and 55.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 152.44ms. Allocated memory is still 142.6MB. Free memory was 55.7MB in the beginning and 84.8MB in the end (delta: -29.2MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1617.94ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 84.8MB in the beginning and 211.1MB in the end (delta: -126.3MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * TraceAbstraction took 92907.48ms. Allocated memory was 318.8MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 211.1MB in the beginning and 1.2GB in the end (delta: -957.6MB). Peak memory consumption was 847.3MB. Max. memory is 16.1GB. * Witness Printer took 148.14ms. Allocated memory is still 1.4GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 199]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.7s, OverallIterations: 31, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 29.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6720 SdHoareTripleChecker+Valid, 26.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6720 mSDsluCounter, 6109 SdHoareTripleChecker+Invalid, 22.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 830 mSDsCounter, 3319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27617 IncrementalHoareTripleChecker+Invalid, 30936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3319 mSolverCounterUnsat, 5279 mSDtfsCounter, 27617 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8582 GetRequests, 8487 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19052occurred in iteration=13, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 36617 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 25635 NumberOfCodeBlocks, 25635 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 27036 ConstructedInterpolants, 0 QuantifiedInterpolants, 84540 SizeOfPredicates, 14 NumberOfNonLiveVariables, 8910 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 40 InterpolantComputations, 30 PerfectInterpolantSequences, 74862/78009 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a25 <= 10) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42))) || ((((a23 <= 138) && (0 <= ((long long) 41 + a23))) && (a4 == 1)) && (130 <= a29))) || ((((((a29 <= 140) && (a23 <= 312)) || (a23 < 139)) && (a4 == 1)) && (a25 <= 9)) && (a8 == 15))) || (((((a25 == 12) && (a23 <= 306)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 43) <= 0) && (a25 == 12)) && (a29 <= 274)) && (a3 == 1)) && (a8 == 15)) && (247 <= a29))) || (((((a29 <= 245) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42))) && (130 <= a29))) || (((((a23 <= 600000) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (13 <= a25))) || ((((a25 == 12) && ((((a29 <= 274) && (247 <= a29)) && (a4 <= 0)) || (((a29 <= 275) && (261 <= a29)) && (a4 <= 0)))) && (a3 == 1)) && (a8 == 15))) || ((((((((long long) a23 + 55) <= 0) && (a25 == 12)) && (a29 <= 274)) && (a3 == 1)) && (a8 == 15)) && (a4 <= 0))) || ((((((a23 <= 600000) && (141 <= a29)) && (a3 == 1)) && (0 <= ((long long) 41 + a23))) && (a4 == 1)) && (a8 == 15))) || (((((((long long) a23 + 43) <= 0) && (a29 <= 140)) && (a3 == 1)) && (a4 != 1)) && (a8 == 15))) || ((((((a29 <= 245) && (141 <= a29)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || ((((((a29 <= 234) && (141 <= a29)) && (a25 == 9)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15))) || ((((((long long) a23 + 43) <= 0) && (a8 <= 15)) && (a4 == 1)) && (a25 == 10))) || (((((a25 == 12) && (((long long) 28470 + a29) <= 0)) && (a23 <= 138)) && (a4 == 1)) && (0 <= ((long long) a23 + 42)))) || (((((a23 <= 600000) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (a25 == 10))) || (((a3 == 1) && (a8 == 15)) && ((((((long long) a23 + 43) <= 0) && (261 <= a29)) && (a25 <= 9)) || ((((((long long) 284336 + a23) <= 0) && (a29 <= 274)) && (247 <= a29)) && (13 <= a25))))) RESULT: Ultimate proved your program to be correct! [2024-12-02 14:46:39,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fe9f57-0b52-4ba7-a0f9-7aa749c42a63/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE