./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/up.i --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_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/up.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB --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 ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:32:46,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:32:47,010 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:32:47,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:32:47,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:32:47,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:32:47,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:32:47,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:32:47,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:32:47,059 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:32:47,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:32:47,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:32:47,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:32:47,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:32:47,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:32:47,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:32:47,062 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:32:47,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:47,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:47,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:32:47,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:32:47,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:32:47,064 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_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB 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 -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f [2024-11-28 03:32:47,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:32:47,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:32:47,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:32:47,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:32:47,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:32:47,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-invgen/up.i [2024-11-28 03:32:50,268 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/data/4b83849c8/87c9e62610be419bbd9bc33c48f0f56f/FLAG39682fad4 [2024-11-28 03:32:50,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:32:50,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/sv-benchmarks/c/loop-invgen/up.i [2024-11-28 03:32:50,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/data/4b83849c8/87c9e62610be419bbd9bc33c48f0f56f/FLAG39682fad4 [2024-11-28 03:32:50,551 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/data/4b83849c8/87c9e62610be419bbd9bc33c48f0f56f [2024-11-28 03:32:50,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:32:50,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:32:50,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:50,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:32:50,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:32:50,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df0cb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50, skipping insertion in model container [2024-11-28 03:32:50,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:32:50,747 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_887bec53-a470-4d3c-a0c0-bcfa3bf03351/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-11-28 03:32:50,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:50,772 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:32:50,785 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_887bec53-a470-4d3c-a0c0-bcfa3bf03351/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-11-28 03:32:50,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:32:50,805 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:32:50,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50 WrapperNode [2024-11-28 03:32:50,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:32:50,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:50,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:32:50,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:32:50,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,841 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-28 03:32:50,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:32:50,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:32:50,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:32:50,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:32:50,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,870 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]. [2024-11-28 03:32:50,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,877 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:32:50,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:32:50,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:32:50,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:32:50,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (1/1) ... [2024-11-28 03:32:50,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:32:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:50,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:32:50,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:32:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:32:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:32:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:32:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:32:51,034 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:32:51,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:32:51,136 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 03:32:51,136 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:32:51,146 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:32:51,146 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:32:51,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:51 BoogieIcfgContainer [2024-11-28 03:32:51,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:32:51,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:32:51,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:32:51,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:32:51,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:32:50" (1/3) ... [2024-11-28 03:32:51,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0265cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:51, skipping insertion in model container [2024-11-28 03:32:51,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:32:50" (2/3) ... [2024-11-28 03:32:51,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0265cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:32:51, skipping insertion in model container [2024-11-28 03:32:51,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:32:51" (3/3) ... [2024-11-28 03:32:51,157 INFO L128 eAbstractionObserver]: Analyzing ICFG up.i [2024-11-28 03:32:51,174 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:32:51,175 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG up.i that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:32:51,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:32:51,252 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;@630abeab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:32:51,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:32:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:32:51,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:51,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:51,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:51,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash 269302063, now seen corresponding path program 1 times [2024-11-28 03:32:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767758358] [2024-11-28 03:32:51,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767758358] [2024-11-28 03:32:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767758358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:32:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130335356] [2024-11-28 03:32:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:51,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:32:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:51,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:32:51,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:51,630 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:51,689 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2024-11-28 03:32:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:32:51,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-28 03:32:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:51,701 INFO L225 Difference]: With dead ends: 28 [2024-11-28 03:32:51,702 INFO L226 Difference]: Without dead ends: 13 [2024-11-28 03:32:51,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:51,712 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:51,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-28 03:32:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-28 03:32:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-28 03:32:51,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2024-11-28 03:32:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:51,743 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-28 03:32:51,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-28 03:32:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:32:51,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:51,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:51,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:32:51,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:51,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1992420749, now seen corresponding path program 1 times [2024-11-28 03:32:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:51,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212399375] [2024-11-28 03:32:51,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:51,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:51,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212399375] [2024-11-28 03:32:51,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212399375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:51,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975667302] [2024-11-28 03:32:51,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:51,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:51,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:51,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:32:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:51,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:32:51,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:52,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:52,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975667302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:52,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:52,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 03:32:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256238416] [2024-11-28 03:32:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:52,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:32:52,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:52,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:32:52,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:52,094 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:52,156 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-28 03:32:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:32:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-28 03:32:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:52,158 INFO L225 Difference]: With dead ends: 25 [2024-11-28 03:32:52,158 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 03:32:52,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:32:52,159 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:52,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 03:32:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2024-11-28 03:32:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-28 03:32:52,166 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-28 03:32:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:52,166 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-28 03:32:52,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-28 03:32:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:32:52,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:52,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:52,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:32:52,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 03:32:52,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:52,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -954151302, now seen corresponding path program 1 times [2024-11-28 03:32:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851905967] [2024-11-28 03:32:52,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851905967] [2024-11-28 03:32:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851905967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499221514] [2024-11-28 03:32:52,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:52,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:52,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:32:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:52,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:32:52,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:52,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:52,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499221514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:52,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:52,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 03:32:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181743019] [2024-11-28 03:32:52,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:52,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:32:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:52,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:32:52,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:52,810 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:52,870 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-11-28 03:32:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:32:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 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 14 [2024-11-28 03:32:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:52,872 INFO L225 Difference]: With dead ends: 30 [2024-11-28 03:32:52,872 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 03:32:52,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:52,873 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:52,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 03:32:52,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-28 03:32:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-28 03:32:52,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2024-11-28 03:32:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:52,880 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-28 03:32:52,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-28 03:32:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:32:52,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:52,881 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:52,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:53,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:53,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:53,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash -776821570, now seen corresponding path program 2 times [2024-11-28 03:32:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187614920] [2024-11-28 03:32:53,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:53,102 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:53,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187614920] [2024-11-28 03:32:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187614920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964917806] [2024-11-28 03:32:53,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:53,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:53,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:53,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:32:53,266 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:53,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:53,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:32:53,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:53,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964917806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:53,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-28 03:32:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779409136] [2024-11-28 03:32:53,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:53,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:32:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:53,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:32:53,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:32:53,413 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:53,478 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-28 03:32:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:32:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:32:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:53,479 INFO L225 Difference]: With dead ends: 31 [2024-11-28 03:32:53,479 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 03:32:53,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:32:53,481 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:53,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 03:32:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-28 03:32:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-28 03:32:53,485 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-11-28 03:32:53,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:53,485 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-28 03:32:53,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-28 03:32:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:32:53,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:53,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:53,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:32:53,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:53,687 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:53,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1021492411, now seen corresponding path program 3 times [2024-11-28 03:32:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929314234] [2024-11-28 03:32:53,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:53,703 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:32:53,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:53,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:53,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929314234] [2024-11-28 03:32:53,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929314234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:53,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830593978] [2024-11-28 03:32:53,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:53,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:53,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:53,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:32:53,933 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:32:53,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:53,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:32:53,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830593978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:54,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:54,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:32:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587723001] [2024-11-28 03:32:54,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:54,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:32:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:54,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:32:54,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:32:54,172 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:54,220 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-28 03:32:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:32:54,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:32:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:54,221 INFO L225 Difference]: With dead ends: 40 [2024-11-28 03:32:54,221 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 03:32:54,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:32:54,222 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:54,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 03:32:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-28 03:32:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-28 03:32:54,226 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2024-11-28 03:32:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:54,227 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-28 03:32:54,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-28 03:32:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 03:32:54,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:54,228 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:54,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:32:54,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:54,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:54,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1604212361, now seen corresponding path program 4 times [2024-11-28 03:32:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825035407] [2024-11-28 03:32:54,434 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:54,454 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:54,455 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825035407] [2024-11-28 03:32:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825035407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349565079] [2024-11-28 03:32:54,596 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:54,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:54,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:54,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:54,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:32:54,643 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:54,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:54,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:32:54,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349565079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:54,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-28 03:32:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014473728] [2024-11-28 03:32:54,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:54,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:32:54,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:54,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:32:54,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:32:54,779 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:54,845 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-28 03:32:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:32:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 22 [2024-11-28 03:32:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:54,846 INFO L225 Difference]: With dead ends: 37 [2024-11-28 03:32:54,846 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:32:54,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:54,847 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:54,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:32:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2024-11-28 03:32:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-28 03:32:54,858 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2024-11-28 03:32:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:54,858 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-28 03:32:54,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-28 03:32:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:32:54,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:54,859 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:54,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:32:55,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:32:55,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:55,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash 754259856, now seen corresponding path program 5 times [2024-11-28 03:32:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:55,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936340974] [2024-11-28 03:32:55,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:55,078 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:32:55,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:55,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936340974] [2024-11-28 03:32:55,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936340974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898158768] [2024-11-28 03:32:55,225 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:55,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:32:55,287 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:32:55,287 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:55,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:32:55,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:55,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898158768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:55,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:55,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-28 03:32:55,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336844719] [2024-11-28 03:32:55,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:55,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:32:55,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:55,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:32:55,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:32:55,553 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:55,612 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2024-11-28 03:32:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:32:55,613 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 03:32:55,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:55,613 INFO L225 Difference]: With dead ends: 50 [2024-11-28 03:32:55,613 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 03:32:55,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:32:55,614 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:55,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 03:32:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-28 03:32:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-11-28 03:32:55,619 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2024-11-28 03:32:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:55,619 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-11-28 03:32:55,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-11-28 03:32:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:32:55,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:55,619 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:55,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:32:55,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:32:55,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:55,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash -935090220, now seen corresponding path program 6 times [2024-11-28 03:32:55,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:55,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853097815] [2024-11-28 03:32:55,825 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:55,840 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 03:32:55,840 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:55,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:55,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853097815] [2024-11-28 03:32:55,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853097815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:55,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883903014] [2024-11-28 03:32:55,952 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:32:55,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:55,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:55,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:32:56,026 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 03:32:56,026 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:56,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:32:56,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:56,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883903014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:56,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:56,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-28 03:32:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501416837] [2024-11-28 03:32:56,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:56,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:32:56,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:56,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:32:56,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:32:56,190 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:56,277 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-28 03:32:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:32:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 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 28 [2024-11-28 03:32:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:56,278 INFO L225 Difference]: With dead ends: 43 [2024-11-28 03:32:56,278 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 03:32:56,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:32:56,279 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:56,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 03:32:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2024-11-28 03:32:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-28 03:32:56,288 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2024-11-28 03:32:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:56,288 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-28 03:32:56,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-28 03:32:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:32:56,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:56,289 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:56,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:56,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:32:56,490 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:56,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash 883608411, now seen corresponding path program 7 times [2024-11-28 03:32:56,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250940113] [2024-11-28 03:32:56,491 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 23 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:56,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250940113] [2024-11-28 03:32:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250940113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383695064] [2024-11-28 03:32:56,722 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:32:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:56,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:56,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:32:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:56,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:32:56,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:56,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383695064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:57,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 03:32:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991314304] [2024-11-28 03:32:57,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:57,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:32:57,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:57,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:32:57,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:32:57,099 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:57,197 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-11-28 03:32:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:32:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-28 03:32:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:57,200 INFO L225 Difference]: With dead ends: 60 [2024-11-28 03:32:57,201 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 03:32:57,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:32:57,201 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:57,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 95 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 03:32:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-28 03:32:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-28 03:32:57,212 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2024-11-28 03:32:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:57,212 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-28 03:32:57,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-28 03:32:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:32:57,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:57,213 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:57,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:57,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:57,414 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:57,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 737482911, now seen corresponding path program 8 times [2024-11-28 03:32:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059992048] [2024-11-28 03:32:57,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:57,434 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:57,435 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059992048] [2024-11-28 03:32:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059992048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424529055] [2024-11-28 03:32:57,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:32:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:57,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:57,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:32:57,696 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:32:57,696 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:57,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:32:57,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:57,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424529055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:57,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:57,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-28 03:32:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981635749] [2024-11-28 03:32:57,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:57,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:32:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:57,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:32:57,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:57,909 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:58,005 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-28 03:32:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:32:58,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-28 03:32:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:58,006 INFO L225 Difference]: With dead ends: 49 [2024-11-28 03:32:58,006 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 03:32:58,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:32:58,007 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:58,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 68 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:32:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 03:32:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2024-11-28 03:32:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-28 03:32:58,012 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2024-11-28 03:32:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:58,012 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-28 03:32:58,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-28 03:32:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:32:58,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:58,013 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:58,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:58,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:32:58,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:58,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1924079962, now seen corresponding path program 9 times [2024-11-28 03:32:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:58,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674324418] [2024-11-28 03:32:58,215 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:58,238 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:32:58,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 38 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:58,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674324418] [2024-11-28 03:32:58,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674324418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928748450] [2024-11-28 03:32:58,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:32:58,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:58,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:58,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:32:58,499 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:32:58,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:58,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:32:58,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:58,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:58,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928748450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:58,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:58,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 03:32:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986958489] [2024-11-28 03:32:58,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:58,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:32:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:58,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:32:58,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:32:58,901 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:58,997 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-28 03:32:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:32:58,998 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:32:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:58,998 INFO L225 Difference]: With dead ends: 70 [2024-11-28 03:32:58,999 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 03:32:58,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:32:59,000 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:59,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 123 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 03:32:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-11-28 03:32:59,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-11-28 03:32:59,005 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2024-11-28 03:32:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:59,005 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-11-28 03:32:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-11-28 03:32:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:32:59,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:59,006 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:59,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:32:59,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:59,210 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:59,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1307236118, now seen corresponding path program 10 times [2024-11-28 03:32:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050504694] [2024-11-28 03:32:59,211 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:59,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:59,225 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:59,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050504694] [2024-11-28 03:32:59,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050504694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:59,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859804894] [2024-11-28 03:32:59,398 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:32:59,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:59,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:59,401 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:59,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:32:59,461 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:32:59,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:32:59,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:32:59,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:59,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:59,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859804894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:32:59,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:32:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-11-28 03:32:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11437168] [2024-11-28 03:32:59,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:32:59,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:32:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:59,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:32:59,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:32:59,666 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:59,767 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-28 03:32:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:32:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 03:32:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:59,769 INFO L225 Difference]: With dead ends: 55 [2024-11-28 03:32:59,769 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 03:32:59,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:32:59,770 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:59,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:32:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 03:32:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-28 03:32:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-28 03:32:59,781 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 40 [2024-11-28 03:32:59,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:59,781 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-28 03:32:59,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-28 03:32:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:32:59,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:59,782 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:59,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:59,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:59,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:59,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -385232527, now seen corresponding path program 11 times [2024-11-28 03:32:59,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-28 03:32:59,984 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:32:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:00,003 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:33:00,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460007656] [2024-11-28 03:33:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460007656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818071492] [2024-11-28 03:33:00,257 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:00,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:00,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:00,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:33:00,317 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:33:00,317 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:00,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:33:00,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:00,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:00,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818071492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:00,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:00,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2024-11-28 03:33:00,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240512782] [2024-11-28 03:33:00,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:00,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:33:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:00,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:33:00,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:33:00,777 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:00,871 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2024-11-28 03:33:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:33:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-28 03:33:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:00,873 INFO L225 Difference]: With dead ends: 80 [2024-11-28 03:33:00,873 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 03:33:00,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:33:00,874 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:00,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 03:33:00,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-28 03:33:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-11-28 03:33:00,882 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44 [2024-11-28 03:33:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:00,882 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-11-28 03:33:00,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-11-28 03:33:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 03:33:00,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:00,886 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:00,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:33:01,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:01,087 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:01,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 85350581, now seen corresponding path program 12 times [2024-11-28 03:33:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104279016] [2024-11-28 03:33:01,087 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:01,118 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:33:01,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 36 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:01,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104279016] [2024-11-28 03:33:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104279016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869868740] [2024-11-28 03:33:01,312 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:01,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:01,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:01,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:01,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:33:01,375 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:33:01,375 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:01,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:33:01,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 49 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:01,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 49 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:01,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869868740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:01,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:01,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-28 03:33:01,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992993778] [2024-11-28 03:33:01,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:01,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:33:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:01,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:33:01,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:33:01,614 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:01,725 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-28 03:33:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:33:01,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-28 03:33:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:01,726 INFO L225 Difference]: With dead ends: 61 [2024-11-28 03:33:01,726 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 03:33:01,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 82 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:33:01,727 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:01,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 03:33:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-28 03:33:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-11-28 03:33:01,738 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2024-11-28 03:33:01,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:01,738 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-11-28 03:33:01,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-11-28 03:33:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:33:01,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:01,739 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:01,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:01,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:01,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:01,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1963467708, now seen corresponding path program 13 times [2024-11-28 03:33:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:01,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 03:33:01,940 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 80 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:02,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 03:33:02,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470700080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833422858] [2024-11-28 03:33:02,246 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:02,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:02,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:02,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:33:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:02,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:33:02,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 105 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:02,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 105 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:02,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833422858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:02,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:02,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 03:33:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537729659] [2024-11-28 03:33:02,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:02,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:33:02,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:02,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:33:02,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:33:02,877 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:02,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:02,993 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-28 03:33:02,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:33:02,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 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 50 [2024-11-28 03:33:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:02,994 INFO L225 Difference]: With dead ends: 90 [2024-11-28 03:33:02,994 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 03:33:02,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:33:02,996 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:02,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 144 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 03:33:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-28 03:33:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2024-11-28 03:33:03,001 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2024-11-28 03:33:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:03,001 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2024-11-28 03:33:03,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2024-11-28 03:33:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:33:03,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:03,002 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:03,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:03,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:33:03,206 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -830789632, now seen corresponding path program 14 times [2024-11-28 03:33:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53346467] [2024-11-28 03:33:03,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:03,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:03,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 49 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:03,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53346467] [2024-11-28 03:33:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53346467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506735739] [2024-11-28 03:33:03,421 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:03,423 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:03,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:33:03,484 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:03,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:03,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:33:03,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 64 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:03,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 64 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:03,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506735739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:03,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:03,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2024-11-28 03:33:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449275343] [2024-11-28 03:33:03,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:03,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:33:03,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:03,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:33:03,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:33:03,772 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:03,902 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-11-28 03:33:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:33:03,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 03:33:03,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:03,903 INFO L225 Difference]: With dead ends: 67 [2024-11-28 03:33:03,903 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 03:33:03,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 92 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:33:03,904 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:03,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 94 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 03:33:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2024-11-28 03:33:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-28 03:33:03,914 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2024-11-28 03:33:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:03,915 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-28 03:33:03,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-28 03:33:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:33:03,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:03,916 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:03,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:33:04,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:33:04,122 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:04,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1435391367, now seen corresponding path program 15 times [2024-11-28 03:33:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547756684] [2024-11-28 03:33:04,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:04,147 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 03:33:04,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547756684] [2024-11-28 03:33:04,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547756684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140422479] [2024-11-28 03:33:04,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:04,470 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:04,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:33:04,537 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 03:33:04,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:04,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:33:04,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 136 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:04,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 136 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140422479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:05,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:05,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 03:33:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416233437] [2024-11-28 03:33:05,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:05,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:33:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:05,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:33:05,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:33:05,160 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:05,299 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2024-11-28 03:33:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:33:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 03:33:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:05,300 INFO L225 Difference]: With dead ends: 100 [2024-11-28 03:33:05,300 INFO L226 Difference]: Without dead ends: 60 [2024-11-28 03:33:05,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:33:05,302 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:05,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 179 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-28 03:33:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-28 03:33:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2024-11-28 03:33:05,312 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56 [2024-11-28 03:33:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:05,312 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2024-11-28 03:33:05,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2024-11-28 03:33:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:33:05,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:05,317 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:05,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:33:05,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:33:05,521 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:05,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash 852891339, now seen corresponding path program 16 times [2024-11-28 03:33:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795440304] [2024-11-28 03:33:05,522 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:05,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:05,538 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:05,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 81 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:05,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795440304] [2024-11-28 03:33:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795440304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197888566] [2024-11-28 03:33:05,761 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:05,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:05,764 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:33:05,832 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:05,832 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:05,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:33:05,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 81 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:05,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 81 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197888566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:06,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:06,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-11-28 03:33:06,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077601407] [2024-11-28 03:33:06,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:06,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:33:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:06,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:33:06,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:33:06,138 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:06,281 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2024-11-28 03:33:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:33:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-28 03:33:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:06,282 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:33:06,283 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:33:06,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:33:06,284 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:06,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:33:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-11-28 03:33:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-28 03:33:06,293 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2024-11-28 03:33:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:06,294 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-28 03:33:06,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-28 03:33:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:33:06,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:06,294 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:06,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:06,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:33:06,495 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:06,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash 569304786, now seen corresponding path program 17 times [2024-11-28 03:33:06,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:06,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784488353] [2024-11-28 03:33:06,496 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:06,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:06,531 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:33:06,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 171 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:06,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:06,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784488353] [2024-11-28 03:33:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784488353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:06,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962526269] [2024-11-28 03:33:06,890 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:06,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:06,893 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:06,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:33:06,968 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:33:06,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:06,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:33:06,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 171 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:07,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 171 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962526269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:07,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:07,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-28 03:33:07,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345809365] [2024-11-28 03:33:07,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:07,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 03:33:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:07,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 03:33:07,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:33:07,696 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:07,818 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2024-11-28 03:33:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:33:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-28 03:33:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:07,819 INFO L225 Difference]: With dead ends: 110 [2024-11-28 03:33:07,819 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 03:33:07,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 94 SyntacticMatches, 20 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:33:07,820 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:07,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 03:33:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-28 03:33:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-28 03:33:07,827 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62 [2024-11-28 03:33:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:07,827 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-28 03:33:07,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-28 03:33:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:33:07,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:07,828 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:07,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:33:08,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:08,032 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:08,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:08,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1305060630, now seen corresponding path program 18 times [2024-11-28 03:33:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:08,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434620230] [2024-11-28 03:33:08,033 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:08,054 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:33:08,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 81 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:08,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434620230] [2024-11-28 03:33:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434620230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756703017] [2024-11-28 03:33:08,300 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:08,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:08,302 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:08,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:33:08,388 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:33:08,389 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:08,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:33:08,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 100 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:08,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 100 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756703017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:08,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2024-11-28 03:33:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265228365] [2024-11-28 03:33:08,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:08,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:33:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:08,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:33:08,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:33:08,705 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:08,860 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-11-28 03:33:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:33:08,861 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 03:33:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:08,861 INFO L225 Difference]: With dead ends: 79 [2024-11-28 03:33:08,861 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 03:33:08,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 115 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:33:08,862 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:08,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 110 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 03:33:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2024-11-28 03:33:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-11-28 03:33:08,867 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 64 [2024-11-28 03:33:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:08,867 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-11-28 03:33:08,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-11-28 03:33:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:33:08,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:08,868 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:08,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:33:09,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:09,073 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:09,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1619810205, now seen corresponding path program 19 times [2024-11-28 03:33:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175151425] [2024-11-28 03:33:09,073 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 173 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:09,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175151425] [2024-11-28 03:33:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175151425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975968466] [2024-11-28 03:33:09,488 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:09,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:09,490 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:09,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:33:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:09,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:33:09,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 210 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:09,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 210 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975968466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:10,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-28 03:33:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758544316] [2024-11-28 03:33:10,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:10,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:33:10,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:10,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:33:10,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:33:10,279 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:10,394 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-11-28 03:33:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:33:10,395 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-28 03:33:10,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:10,395 INFO L225 Difference]: With dead ends: 120 [2024-11-28 03:33:10,395 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 03:33:10,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 102 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:33:10,397 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:10,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 150 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 03:33:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-11-28 03:33:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-11-28 03:33:10,402 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68 [2024-11-28 03:33:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:10,402 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-11-28 03:33:10,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1052631578947367) internal successors, (118), 38 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-11-28 03:33:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:33:10,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:10,403 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:10,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:33:10,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:10,604 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:10,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1375186207, now seen corresponding path program 20 times [2024-11-28 03:33:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127628962] [2024-11-28 03:33:10,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:10,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:10,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 100 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:10,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127628962] [2024-11-28 03:33:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127628962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118916498] [2024-11-28 03:33:10,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:10,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:10,908 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:10,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:33:10,981 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:10,981 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:10,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:33:10,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 121 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:11,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 121 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118916498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:11,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2024-11-28 03:33:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465333846] [2024-11-28 03:33:11,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:11,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:33:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:11,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:33:11,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:33:11,357 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:11,519 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2024-11-28 03:33:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:33:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-28 03:33:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:11,520 INFO L225 Difference]: With dead ends: 85 [2024-11-28 03:33:11,520 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 03:33:11,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:33:11,522 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:11,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 119 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 03:33:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2024-11-28 03:33:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-11-28 03:33:11,527 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2024-11-28 03:33:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:11,527 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-11-28 03:33:11,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-11-28 03:33:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:33:11,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:11,528 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:11,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:33:11,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:33:11,732 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:11,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:11,732 INFO L85 PathProgramCache]: Analyzing trace with hash 47785960, now seen corresponding path program 21 times [2024-11-28 03:33:11,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:11,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972621469] [2024-11-28 03:33:11,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:11,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:11,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:33:11,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 212 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:12,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972621469] [2024-11-28 03:33:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972621469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:12,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277389286] [2024-11-28 03:33:12,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:12,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:12,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:12,204 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:12,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:33:12,286 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:33:12,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:12,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:33:12,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:12,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277389286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:13,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-28 03:33:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313090330] [2024-11-28 03:33:13,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:13,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:33:13,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:13,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:33:13,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:33:13,069 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:13,263 INFO L93 Difference]: Finished difference Result 130 states and 132 transitions. [2024-11-28 03:33:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:33:13,263 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-28 03:33:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:13,264 INFO L225 Difference]: With dead ends: 130 [2024-11-28 03:33:13,264 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 03:33:13,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 111 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:33:13,265 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:13,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 332 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 03:33:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-11-28 03:33:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-28 03:33:13,270 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74 [2024-11-28 03:33:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:13,270 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-28 03:33:13,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.1219512195121952) internal successors, (128), 41 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-28 03:33:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:33:13,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:13,271 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:13,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:33:13,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:33:13,476 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:13,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash -782983124, now seen corresponding path program 22 times [2024-11-28 03:33:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866798085] [2024-11-28 03:33:13,477 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:13,505 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:13,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 144 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866798085] [2024-11-28 03:33:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866798085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159146611] [2024-11-28 03:33:13,811 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:13,813 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:13,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:33:13,898 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:13,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:13,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:33:13,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 144 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:14,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 144 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:14,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159146611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:14,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:14,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2024-11-28 03:33:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154200831] [2024-11-28 03:33:14,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:14,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:33:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:14,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:33:14,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:33:14,260 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:14,501 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-11-28 03:33:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:33:14,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-28 03:33:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:14,517 INFO L225 Difference]: With dead ends: 91 [2024-11-28 03:33:14,517 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 03:33:14,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 138 SyntacticMatches, 24 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:33:14,518 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:14,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 93 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 03:33:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-28 03:33:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-11-28 03:33:14,523 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 76 [2024-11-28 03:33:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:14,523 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-11-28 03:33:14,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-11-28 03:33:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 03:33:14,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:14,524 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:14,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:33:14,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:33:14,729 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:14,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash -514336845, now seen corresponding path program 23 times [2024-11-28 03:33:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366456852] [2024-11-28 03:33:14,729 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:14,757 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:33:14,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 300 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366456852] [2024-11-28 03:33:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366456852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114205192] [2024-11-28 03:33:15,312 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:15,315 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:15,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:33:15,407 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:33:15,407 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:15,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:33:15,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 300 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:15,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 300 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114205192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:16,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 42 [2024-11-28 03:33:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823113221] [2024-11-28 03:33:16,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:16,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 03:33:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:16,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 03:33:16,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:33:16,266 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 42 states, 42 states have (on average 3.0952380952380953) internal successors, (130), 42 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:16,412 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2024-11-28 03:33:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:33:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.0952380952380953) internal successors, (130), 42 states have internal predecessors, (130), 0 states have call successors, (0), 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 80 [2024-11-28 03:33:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:16,414 INFO L225 Difference]: With dead ends: 140 [2024-11-28 03:33:16,414 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:33:16,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 121 SyntacticMatches, 26 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:33:16,415 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:16,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 213 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:33:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-11-28 03:33:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2024-11-28 03:33:16,424 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80 [2024-11-28 03:33:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:16,425 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2024-11-28 03:33:16,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.0952380952380953) internal successors, (130), 42 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2024-11-28 03:33:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:33:16,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:16,426 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:16,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:16,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:33:16,627 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:16,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1602155273, now seen corresponding path program 24 times [2024-11-28 03:33:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:16,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579430866] [2024-11-28 03:33:16,628 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:16,678 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 03:33:16,679 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 144 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579430866] [2024-11-28 03:33:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579430866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:17,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112904963] [2024-11-28 03:33:17,017 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:17,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:17,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:17,018 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:17,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:33:17,109 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-28 03:33:17,109 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:17,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:33:17,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 169 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:17,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 169 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112904963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:17,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2024-11-28 03:33:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182617089] [2024-11-28 03:33:17,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:17,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:33:17,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:17,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:33:17,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:33:17,514 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:17,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:17,714 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2024-11-28 03:33:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 03:33:17,715 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 82 [2024-11-28 03:33:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:17,715 INFO L225 Difference]: With dead ends: 97 [2024-11-28 03:33:17,716 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 03:33:17,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 148 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:33:17,716 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:17,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 03:33:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2024-11-28 03:33:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-28 03:33:17,722 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2024-11-28 03:33:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:17,722 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-28 03:33:17,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-28 03:33:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 03:33:17,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:17,723 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:17,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:17,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:33:17,924 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:17,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash 932898558, now seen corresponding path program 25 times [2024-11-28 03:33:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087463011] [2024-11-28 03:33:17,925 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 302 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087463011] [2024-11-28 03:33:18,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087463011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607477424] [2024-11-28 03:33:18,513 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:18,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:18,515 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:18,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:33:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:18,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:33:18,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 351 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:19,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 351 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:19,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607477424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:19,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:19,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-28 03:33:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359148111] [2024-11-28 03:33:19,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:19,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:33:19,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:19,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:33:19,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:33:19,710 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 47 states, 47 states have (on average 3.148936170212766) internal successors, (148), 47 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:19,898 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-11-28 03:33:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:33:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.148936170212766) internal successors, (148), 47 states have internal predecessors, (148), 0 states have call successors, (0), 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 86 [2024-11-28 03:33:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:19,900 INFO L225 Difference]: With dead ends: 150 [2024-11-28 03:33:19,900 INFO L226 Difference]: Without dead ends: 90 [2024-11-28 03:33:19,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 129 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:33:19,901 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:19,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 242 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-28 03:33:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-28 03:33:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-11-28 03:33:19,908 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86 [2024-11-28 03:33:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:19,908 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-11-28 03:33:19,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.148936170212766) internal successors, (148), 47 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-11-28 03:33:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 03:33:19,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:19,909 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:19,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:33:20,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:33:20,114 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:20,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -344975038, now seen corresponding path program 26 times [2024-11-28 03:33:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:20,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278387296] [2024-11-28 03:33:20,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:20,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:20,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 169 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:20,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278387296] [2024-11-28 03:33:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278387296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195252873] [2024-11-28 03:33:20,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:20,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:20,509 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:20,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:33:20,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:20,600 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:20,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:33:20,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 196 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:20,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 196 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195252873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:21,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-11-28 03:33:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048033913] [2024-11-28 03:33:21,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:21,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:33:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:21,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:33:21,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:33:21,107 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:21,331 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2024-11-28 03:33:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:33:21,331 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 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 88 [2024-11-28 03:33:21,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:21,332 INFO L225 Difference]: With dead ends: 103 [2024-11-28 03:33:21,332 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 03:33:21,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 158 SyntacticMatches, 29 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:33:21,333 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:21,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 03:33:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2024-11-28 03:33:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2024-11-28 03:33:21,344 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 88 [2024-11-28 03:33:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:21,344 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2024-11-28 03:33:21,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2024-11-28 03:33:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 03:33:21,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:21,345 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:21,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:33:21,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:33:21,550 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:21,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash 541382089, now seen corresponding path program 27 times [2024-11-28 03:33:21,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:21,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072495089] [2024-11-28 03:33:21,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:21,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 03:33:21,589 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 353 proven. 249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072495089] [2024-11-28 03:33:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072495089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429259112] [2024-11-28 03:33:22,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:22,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:22,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:22,228 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:33:22,326 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-28 03:33:22,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:22,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:33:22,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 406 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:23,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 406 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429259112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:23,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:23,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-28 03:33:23,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210709815] [2024-11-28 03:33:23,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:23,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:33:23,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:23,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:33:23,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:33:23,536 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:23,783 INFO L93 Difference]: Finished difference Result 160 states and 162 transitions. [2024-11-28 03:33:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:33:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-28 03:33:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:23,785 INFO L225 Difference]: With dead ends: 160 [2024-11-28 03:33:23,785 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:33:23,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 138 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:33:23,786 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:23,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 401 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:33:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-11-28 03:33:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-11-28 03:33:23,792 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92 [2024-11-28 03:33:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:23,793 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-11-28 03:33:23,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.16) internal successors, (158), 50 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-11-28 03:33:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:33:23,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:23,794 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:23,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 03:33:23,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:33:23,994 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:23,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash -451656435, now seen corresponding path program 28 times [2024-11-28 03:33:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:23,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288191006] [2024-11-28 03:33:23,995 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:24,024 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:24,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 225 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:24,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288191006] [2024-11-28 03:33:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288191006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201634769] [2024-11-28 03:33:24,401 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:24,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:24,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:24,403 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:24,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:33:24,491 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:24,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:24,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:33:24,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 225 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:24,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 225 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:25,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201634769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:25,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:25,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-11-28 03:33:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442801193] [2024-11-28 03:33:25,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:25,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:33:25,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:25,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:33:25,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:33:25,037 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:25,280 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2024-11-28 03:33:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:33:25,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 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 94 [2024-11-28 03:33:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:25,282 INFO L225 Difference]: With dead ends: 109 [2024-11-28 03:33:25,282 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 03:33:25,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 171 SyntacticMatches, 30 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=458, Invalid=732, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:33:25,283 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:25,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 139 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 03:33:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-11-28 03:33:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2024-11-28 03:33:25,289 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2024-11-28 03:33:25,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:25,289 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2024-11-28 03:33:25,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.8) internal successors, (96), 20 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2024-11-28 03:33:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 03:33:25,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:25,290 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:25,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:33:25,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:25,491 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:25,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash 285746196, now seen corresponding path program 29 times [2024-11-28 03:33:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258964156] [2024-11-28 03:33:25,491 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:25,538 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 03:33:25,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 465 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258964156] [2024-11-28 03:33:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258964156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542280760] [2024-11-28 03:33:26,183 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:26,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:26,186 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:26,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:33:26,293 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-28 03:33:26,293 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:26,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:33:26,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 465 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:27,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 465 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542280760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:27,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 51 [2024-11-28 03:33:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169572415] [2024-11-28 03:33:27,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:27,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:33:27,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:27,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:33:27,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:33:27,531 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:27,721 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-28 03:33:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:33:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-28 03:33:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:27,723 INFO L225 Difference]: With dead ends: 170 [2024-11-28 03:33:27,723 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 03:33:27,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 148 SyntacticMatches, 32 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:33:27,724 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:27,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 312 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 03:33:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-28 03:33:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2024-11-28 03:33:27,730 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98 [2024-11-28 03:33:27,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:27,730 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2024-11-28 03:33:27,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2024-11-28 03:33:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 03:33:27,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:27,731 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:27,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:27,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 03:33:27,931 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:27,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1620045736, now seen corresponding path program 30 times [2024-11-28 03:33:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:27,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160845338] [2024-11-28 03:33:27,932 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:27,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:27,955 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:33:27,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 225 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160845338] [2024-11-28 03:33:28,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160845338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985172809] [2024-11-28 03:33:28,353 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:28,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:28,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:28,355 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:28,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:33:28,462 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:33:28,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:28,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:33:28,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 256 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:28,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 256 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985172809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:29,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2024-11-28 03:33:29,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066118143] [2024-11-28 03:33:29,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:29,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:33:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:29,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:33:29,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:33:29,017 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:29,248 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2024-11-28 03:33:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 03:33:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-28 03:33:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:29,249 INFO L225 Difference]: With dead ends: 115 [2024-11-28 03:33:29,249 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 03:33:29,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 181 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:33:29,250 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:29,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 156 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:29,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 03:33:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2024-11-28 03:33:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-28 03:33:29,259 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2024-11-28 03:33:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:29,259 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-28 03:33:29,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-28 03:33:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:33:29,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:29,261 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:29,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:29,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 03:33:29,461 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:29,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1453806047, now seen corresponding path program 31 times [2024-11-28 03:33:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:29,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945688821] [2024-11-28 03:33:29,462 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 467 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945688821] [2024-11-28 03:33:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945688821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200050037] [2024-11-28 03:33:30,224 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:30,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:30,226 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:30,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:33:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:30,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:33:30,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 528 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:31,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 528 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:31,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200050037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:31,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-11-28 03:33:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138254821] [2024-11-28 03:33:31,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:31,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 03:33:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:31,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 03:33:31,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:33:31,602 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 56 states, 56 states have (on average 3.1785714285714284) internal successors, (178), 56 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:31,880 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-11-28 03:33:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:33:31,881 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.1785714285714284) internal successors, (178), 56 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-28 03:33:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:31,881 INFO L225 Difference]: With dead ends: 180 [2024-11-28 03:33:31,881 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 03:33:31,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 156 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:33:31,883 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:31,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 361 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 03:33:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-28 03:33:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2024-11-28 03:33:31,895 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104 [2024-11-28 03:33:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:31,895 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2024-11-28 03:33:31,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.1785714285714284) internal successors, (178), 56 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2024-11-28 03:33:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 03:33:31,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:31,896 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:31,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:33:32,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 03:33:32,097 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:32,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2020213981, now seen corresponding path program 32 times [2024-11-28 03:33:32,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277152008] [2024-11-28 03:33:32,097 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:32,117 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:32,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 256 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277152008] [2024-11-28 03:33:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277152008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634337250] [2024-11-28 03:33:32,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:32,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:32,608 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:32,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:33:32,711 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:32,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:32,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 03:33:32,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 289 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:32,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 289 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634337250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:33,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2024-11-28 03:33:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209251026] [2024-11-28 03:33:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:33,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:33:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:33,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:33:33,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:33:33,261 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:33,528 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2024-11-28 03:33:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 03:33:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-28 03:33:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:33,530 INFO L225 Difference]: With dead ends: 121 [2024-11-28 03:33:33,530 INFO L226 Difference]: Without dead ends: 119 [2024-11-28 03:33:33,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 191 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:33:33,531 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:33,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 156 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-28 03:33:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2024-11-28 03:33:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-11-28 03:33:33,537 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2024-11-28 03:33:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:33,537 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-11-28 03:33:33,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-11-28 03:33:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 03:33:33,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:33,538 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:33,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:33:33,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:33,739 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:33,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1863000278, now seen corresponding path program 33 times [2024-11-28 03:33:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036748100] [2024-11-28 03:33:33,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:33,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 03:33:33,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 530 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:34,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036748100] [2024-11-28 03:33:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036748100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590698248] [2024-11-28 03:33:34,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:34,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:34,512 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:34,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:33:34,633 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-28 03:33:34,633 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:34,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:33:34,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 595 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:35,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 595 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:36,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590698248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:36,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:36,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-28 03:33:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556088878] [2024-11-28 03:33:36,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:36,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 03:33:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:36,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 03:33:36,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:33:36,061 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 59 states, 59 states have (on average 3.1864406779661016) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:36,259 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2024-11-28 03:33:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:33:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.1864406779661016) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-28 03:33:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:36,260 INFO L225 Difference]: With dead ends: 190 [2024-11-28 03:33:36,260 INFO L226 Difference]: Without dead ends: 114 [2024-11-28 03:33:36,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 165 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:33:36,261 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:36,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 262 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-28 03:33:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-11-28 03:33:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2024-11-28 03:33:36,269 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110 [2024-11-28 03:33:36,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:36,269 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2024-11-28 03:33:36,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.1864406779661016) internal successors, (188), 59 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2024-11-28 03:33:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 03:33:36,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:36,270 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:36,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:33:36,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:36,471 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:36,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash -509049490, now seen corresponding path program 34 times [2024-11-28 03:33:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:36,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948875781] [2024-11-28 03:33:36,471 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:36,490 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:36,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 324 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948875781] [2024-11-28 03:33:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948875781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440342663] [2024-11-28 03:33:37,006 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:37,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:37,008 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:37,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:33:37,119 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:37,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:37,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 03:33:37,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 324 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:37,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 324 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:37,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440342663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:37,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:37,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2024-11-28 03:33:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527866367] [2024-11-28 03:33:37,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:37,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:33:37,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:37,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:33:37,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:33:37,721 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:37,988 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2024-11-28 03:33:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:33:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 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 112 [2024-11-28 03:33:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:37,990 INFO L225 Difference]: With dead ends: 127 [2024-11-28 03:33:37,990 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:33:37,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 204 SyntacticMatches, 36 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=629, Invalid=1011, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:33:37,991 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:37,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:33:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2024-11-28 03:33:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2024-11-28 03:33:38,004 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 112 [2024-11-28 03:33:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:38,004 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2024-11-28 03:33:38,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2024-11-28 03:33:38,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 03:33:38,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:38,005 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:38,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:33:38,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:38,206 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:38,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:38,207 INFO L85 PathProgramCache]: Analyzing trace with hash 785599477, now seen corresponding path program 35 times [2024-11-28 03:33:38,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:38,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442386553] [2024-11-28 03:33:38,207 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:38,240 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-28 03:33:38,240 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 666 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442386553] [2024-11-28 03:33:39,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442386553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301460726] [2024-11-28 03:33:39,120 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:39,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:39,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:39,122 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:39,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:33:39,248 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-28 03:33:39,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:39,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 03:33:39,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 666 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:40,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 666 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:40,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301460726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:40,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:40,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 60 [2024-11-28 03:33:40,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847269741] [2024-11-28 03:33:40,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:40,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 03:33:40,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:40,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 03:33:40,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:33:40,730 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 60 states, 60 states have (on average 3.1666666666666665) internal successors, (190), 60 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:40,963 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2024-11-28 03:33:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:33:40,964 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.1666666666666665) internal successors, (190), 60 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-11-28 03:33:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:40,964 INFO L225 Difference]: With dead ends: 200 [2024-11-28 03:33:40,965 INFO L226 Difference]: Without dead ends: 120 [2024-11-28 03:33:40,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 175 SyntacticMatches, 38 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:33:40,966 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:40,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 272 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-28 03:33:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-11-28 03:33:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-11-28 03:33:40,973 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116 [2024-11-28 03:33:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:40,974 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-11-28 03:33:40,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.1666666666666665) internal successors, (190), 60 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-11-28 03:33:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 03:33:40,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:40,975 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:40,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:41,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:33:41,176 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:41,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:41,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1155149625, now seen corresponding path program 36 times [2024-11-28 03:33:41,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:41,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006931395] [2024-11-28 03:33:41,176 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:41,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:41,210 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-28 03:33:41,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 324 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:41,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006931395] [2024-11-28 03:33:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006931395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881086135] [2024-11-28 03:33:41,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:41,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:41,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:41,651 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:41,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:33:41,780 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-28 03:33:41,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:41,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 03:33:41,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 361 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:41,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 361 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:42,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881086135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:42,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:42,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2024-11-28 03:33:42,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428308184] [2024-11-28 03:33:42,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:42,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:33:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:42,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:33:42,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:33:42,381 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:42,702 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2024-11-28 03:33:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 03:33:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 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 118 [2024-11-28 03:33:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:42,704 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:33:42,704 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 03:33:42,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 214 SyntacticMatches, 38 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:33:42,705 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:42,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 179 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 03:33:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2024-11-28 03:33:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2024-11-28 03:33:42,718 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 118 [2024-11-28 03:33:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:42,718 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2024-11-28 03:33:42,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2024-11-28 03:33:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 03:33:42,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:42,719 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:42,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:33:42,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:33:42,920 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:42,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash -365619136, now seen corresponding path program 37 times [2024-11-28 03:33:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449224163] [2024-11-28 03:33:42,920 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:42,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 668 proven. 434 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:43,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449224163] [2024-11-28 03:33:43,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449224163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:43,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389279651] [2024-11-28 03:33:43,723 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:43,724 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:43,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:33:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:33:43,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 03:33:43,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 741 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:44,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 741 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389279651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:45,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:45,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-28 03:33:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977096866] [2024-11-28 03:33:45,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:45,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 03:33:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:45,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 03:33:45,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:33:45,547 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 65 states, 65 states have (on average 3.2) internal successors, (208), 65 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:45,768 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2024-11-28 03:33:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 03:33:45,768 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.2) internal successors, (208), 65 states have internal predecessors, (208), 0 states have call successors, (0), 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 122 [2024-11-28 03:33:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:45,769 INFO L225 Difference]: With dead ends: 210 [2024-11-28 03:33:45,769 INFO L226 Difference]: Without dead ends: 126 [2024-11-28 03:33:45,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 183 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:33:45,770 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:45,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 324 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-28 03:33:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2024-11-28 03:33:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2024-11-28 03:33:45,779 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122 [2024-11-28 03:33:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:45,779 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2024-11-28 03:33:45,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.2) internal successors, (208), 65 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2024-11-28 03:33:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 03:33:45,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:45,780 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:45,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:33:45,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:33:45,980 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:45,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash 393050244, now seen corresponding path program 38 times [2024-11-28 03:33:45,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:45,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410222172] [2024-11-28 03:33:45,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:45,999 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:45,999 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 361 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:46,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410222172] [2024-11-28 03:33:46,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410222172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:46,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160901169] [2024-11-28 03:33:46,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:33:46,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:46,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:46,456 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:46,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:33:46,573 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:33:46,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:46,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:33:46,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 400 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:46,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 400 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160901169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:47,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:47,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2024-11-28 03:33:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293152783] [2024-11-28 03:33:47,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:47,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:33:47,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:47,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:33:47,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:33:47,242 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:47,552 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2024-11-28 03:33:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 03:33:47,553 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-28 03:33:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:47,554 INFO L225 Difference]: With dead ends: 139 [2024-11-28 03:33:47,554 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 03:33:47,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 224 SyntacticMatches, 41 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:33:47,555 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:47,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 161 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 03:33:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2024-11-28 03:33:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2024-11-28 03:33:47,563 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 124 [2024-11-28 03:33:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:47,564 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2024-11-28 03:33:47,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2024-11-28 03:33:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 03:33:47,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:47,565 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:47,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:33:47,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:33:47,765 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:47,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1142735883, now seen corresponding path program 39 times [2024-11-28 03:33:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:47,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397078827] [2024-11-28 03:33:47,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:47,797 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-28 03:33:47,797 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 743 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397078827] [2024-11-28 03:33:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397078827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867495093] [2024-11-28 03:33:48,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:33:48,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:48,828 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:48,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:33:48,985 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-28 03:33:48,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:48,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 03:33:48,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 820 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:50,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 820 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867495093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:50,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-11-28 03:33:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473775567] [2024-11-28 03:33:50,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:50,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:33:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:50,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:33:50,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:33:50,897 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 68 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 68 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:51,149 INFO L93 Difference]: Finished difference Result 220 states and 222 transitions. [2024-11-28 03:33:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:33:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 68 states have internal predecessors, (218), 0 states have call successors, (0), 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 128 [2024-11-28 03:33:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:51,151 INFO L225 Difference]: With dead ends: 220 [2024-11-28 03:33:51,151 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 03:33:51,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 192 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:33:51,152 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:51,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 360 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 03:33:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2024-11-28 03:33:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2024-11-28 03:33:51,159 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128 [2024-11-28 03:33:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:51,159 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2024-11-28 03:33:51,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.2058823529411766) internal successors, (218), 68 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2024-11-28 03:33:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 03:33:51,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:51,160 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:51,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 03:33:51,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:51,360 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:51,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 179626319, now seen corresponding path program 40 times [2024-11-28 03:33:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175437807] [2024-11-28 03:33:51,361 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:51,379 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:51,379 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 441 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:51,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175437807] [2024-11-28 03:33:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175437807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286066471] [2024-11-28 03:33:51,889 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:33:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:51,894 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:51,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:33:52,022 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:33:52,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:52,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 03:33:52,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 441 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:52,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 441 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286066471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:52,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-11-28 03:33:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899391174] [2024-11-28 03:33:52,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:52,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:33:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:52,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:33:52,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:33:52,748 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:53,066 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2024-11-28 03:33:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:33:53,067 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 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 130 [2024-11-28 03:33:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:53,068 INFO L225 Difference]: With dead ends: 145 [2024-11-28 03:33:53,068 INFO L226 Difference]: Without dead ends: 143 [2024-11-28 03:33:53,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 237 SyntacticMatches, 42 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=827, Invalid=1335, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:33:53,068 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:53,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 175 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-28 03:33:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2024-11-28 03:33:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-11-28 03:33:53,077 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2024-11-28 03:33:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:53,078 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-11-28 03:33:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.076923076923077) internal successors, (132), 26 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-11-28 03:33:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 03:33:53,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:53,079 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:53,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 03:33:53,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:53,279 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:53,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:53,280 INFO L85 PathProgramCache]: Analyzing trace with hash 10276694, now seen corresponding path program 41 times [2024-11-28 03:33:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765764517] [2024-11-28 03:33:53,280 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:53,321 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-28 03:33:53,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 903 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:54,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:54,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765764517] [2024-11-28 03:33:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765764517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:54,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432359772] [2024-11-28 03:33:54,476 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:33:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:54,478 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:54,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:33:54,630 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-28 03:33:54,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:54,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 03:33:54,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 903 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:55,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 903 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432359772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:56,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:56,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 69 [2024-11-28 03:33:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150156364] [2024-11-28 03:33:56,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:56,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 03:33:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:56,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 03:33:56,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 03:33:56,564 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:56,809 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2024-11-28 03:33:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 03:33:56,809 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 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 134 [2024-11-28 03:33:56,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:56,810 INFO L225 Difference]: With dead ends: 230 [2024-11-28 03:33:56,810 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 03:33:56,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 202 SyntacticMatches, 44 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2815 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1103, Invalid=3589, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 03:33:56,812 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:56,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 365 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:33:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 03:33:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2024-11-28 03:33:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2024-11-28 03:33:56,821 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 134 [2024-11-28 03:33:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:56,821 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2024-11-28 03:33:56,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 69 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2024-11-28 03:33:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 03:33:56,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:56,822 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:56,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 03:33:57,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:57,023 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:57,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1760368230, now seen corresponding path program 42 times [2024-11-28 03:33:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:57,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935641838] [2024-11-28 03:33:57,024 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:57,062 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 03:33:57,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 441 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:33:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935641838] [2024-11-28 03:33:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935641838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:33:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460674620] [2024-11-28 03:33:57,598 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:33:57,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:57,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:33:57,600 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:33:57,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:33:57,755 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 03:33:57,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:33:57,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 03:33:57,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:33:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 484 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:57,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:33:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 484 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:33:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460674620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:58,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:33:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2024-11-28 03:33:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098293593] [2024-11-28 03:33:58,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:58,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:33:58,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:33:58,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:33:58,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:33:58,508 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:33:58,862 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2024-11-28 03:33:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:33:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 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 136 [2024-11-28 03:33:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:33:58,864 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:33:58,864 INFO L226 Difference]: Without dead ends: 149 [2024-11-28 03:33:58,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 247 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:33:58,864 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:33:58,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 230 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:33:58,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-28 03:33:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2024-11-28 03:33:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:58,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2024-11-28 03:33:58,873 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 136 [2024-11-28 03:33:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:33:58,873 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2024-11-28 03:33:58,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.035714285714286) internal successors, (141), 28 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2024-11-28 03:33:58,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:33:58,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:33:58,874 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-28 03:33:58,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-28 03:33:59,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:33:59,075 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:33:59,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:33:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1562920415, now seen corresponding path program 43 times [2024-11-28 03:33:59,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:33:59,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589871148] [2024-11-28 03:33:59,076 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:33:59,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:33:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 905 proven. 569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589871148] [2024-11-28 03:34:00,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589871148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044656603] [2024-11-28 03:34:00,127 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:00,130 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:00,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-28 03:34:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:00,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 03:34:00,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 990 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:01,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 990 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044656603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:02,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-11-28 03:34:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349234639] [2024-11-28 03:34:02,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:02,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-28 03:34:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:02,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-28 03:34:02,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:34:02,398 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 74 states, 74 states have (on average 3.2162162162162162) internal successors, (238), 74 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:02,775 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2024-11-28 03:34:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 03:34:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.2162162162162162) internal successors, (238), 74 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-28 03:34:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:02,776 INFO L225 Difference]: With dead ends: 240 [2024-11-28 03:34:02,776 INFO L226 Difference]: Without dead ends: 144 [2024-11-28 03:34:02,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 210 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:34:02,777 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:02,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 477 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-28 03:34:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2024-11-28 03:34:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-11-28 03:34:02,786 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 140 [2024-11-28 03:34:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:02,786 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-11-28 03:34:02,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.2162162162162162) internal successors, (238), 74 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-11-28 03:34:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 03:34:02,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:02,787 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:02,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-28 03:34:02,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 03:34:02,988 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:02,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2012877157, now seen corresponding path program 44 times [2024-11-28 03:34:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:02,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527327894] [2024-11-28 03:34:02,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:03,016 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:03,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 484 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527327894] [2024-11-28 03:34:03,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527327894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287458425] [2024-11-28 03:34:03,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:03,635 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:03,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-28 03:34:03,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:03,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:03,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 03:34:03,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 529 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:04,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 529 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287458425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:04,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2024-11-28 03:34:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749528793] [2024-11-28 03:34:04,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:04,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:34:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:04,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:34:04,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:34:04,688 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:05,044 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2024-11-28 03:34:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 03:34:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 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 142 [2024-11-28 03:34:05,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:05,046 INFO L225 Difference]: With dead ends: 157 [2024-11-28 03:34:05,046 INFO L226 Difference]: Without dead ends: 155 [2024-11-28 03:34:05,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 257 SyntacticMatches, 47 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:34:05,047 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:05,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 197 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-28 03:34:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2024-11-28 03:34:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2024-11-28 03:34:05,057 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 142 [2024-11-28 03:34:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:05,057 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2024-11-28 03:34:05,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.068965517241379) internal successors, (147), 29 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2024-11-28 03:34:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:34:05,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:05,058 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:05,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-28 03:34:05,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 03:34:05,259 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:05,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash -385874836, now seen corresponding path program 45 times [2024-11-28 03:34:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:05,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745776477] [2024-11-28 03:34:05,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:05,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:05,311 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 03:34:05,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 992 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745776477] [2024-11-28 03:34:06,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745776477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:06,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909076363] [2024-11-28 03:34:06,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:06,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:06,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:06,465 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:06,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-28 03:34:06,642 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 03:34:06,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:06,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 03:34:06,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1081 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:07,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 1081 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:08,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909076363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:08,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-11-28 03:34:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431782228] [2024-11-28 03:34:08,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:08,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-28 03:34:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:08,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-28 03:34:08,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 03:34:08,936 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 77 states, 77 states have (on average 3.220779220779221) internal successors, (248), 77 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:09,253 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2024-11-28 03:34:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:34:09,253 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.220779220779221) internal successors, (248), 77 states have internal predecessors, (248), 0 states have call successors, (0), 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 146 [2024-11-28 03:34:09,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:09,254 INFO L225 Difference]: With dead ends: 250 [2024-11-28 03:34:09,254 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 03:34:09,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 219 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 03:34:09,255 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:09,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 537 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 03:34:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2024-11-28 03:34:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2024-11-28 03:34:09,264 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 146 [2024-11-28 03:34:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:09,265 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2024-11-28 03:34:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.220779220779221) internal successors, (248), 77 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2024-11-28 03:34:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:34:09,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:09,266 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:09,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-28 03:34:09,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:34:09,470 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:09,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash 669833392, now seen corresponding path program 46 times [2024-11-28 03:34:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:09,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791575918] [2024-11-28 03:34:09,470 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:09,495 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:09,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 576 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:10,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:10,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791575918] [2024-11-28 03:34:10,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791575918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242103075] [2024-11-28 03:34:10,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:10,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:10,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:10,100 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:10,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-28 03:34:10,248 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:10,248 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:10,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 03:34:10,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 576 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:10,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 576 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242103075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:11,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 29 [2024-11-28 03:34:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223632355] [2024-11-28 03:34:11,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:11,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:34:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:11,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:34:11,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:34:11,115 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:11,469 INFO L93 Difference]: Finished difference Result 163 states and 164 transitions. [2024-11-28 03:34:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:34:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 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 148 [2024-11-28 03:34:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:11,470 INFO L225 Difference]: With dead ends: 163 [2024-11-28 03:34:11,470 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 03:34:11,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 270 SyntacticMatches, 48 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:34:11,471 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:11,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 183 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 03:34:11,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-28 03:34:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-11-28 03:34:11,481 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 148 [2024-11-28 03:34:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:11,482 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-11-28 03:34:11,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-11-28 03:34:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 03:34:11,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:11,483 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:11,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-28 03:34:11,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:34:11,683 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:11,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1213738551, now seen corresponding path program 47 times [2024-11-28 03:34:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891772953] [2024-11-28 03:34:11,684 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:11,729 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 03:34:11,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 1176 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:12,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:12,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891772953] [2024-11-28 03:34:12,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891772953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:12,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059550464] [2024-11-28 03:34:12,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:12,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:12,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:12,967 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:12,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-28 03:34:13,152 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-28 03:34:13,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:13,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 03:34:13,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 1176 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:14,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 1176 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:15,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059550464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:15,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:15,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 78 [2024-11-28 03:34:15,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212741712] [2024-11-28 03:34:15,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:15,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 03:34:15,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:15,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 03:34:15,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 03:34:15,626 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 78 states, 78 states have (on average 3.2051282051282053) internal successors, (250), 78 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:15,990 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2024-11-28 03:34:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 03:34:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.2051282051282053) internal successors, (250), 78 states have internal predecessors, (250), 0 states have call successors, (0), 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 152 [2024-11-28 03:34:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:15,992 INFO L225 Difference]: With dead ends: 260 [2024-11-28 03:34:15,992 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 03:34:15,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 229 SyntacticMatches, 50 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1403, Invalid=4603, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 03:34:15,993 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:15,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 464 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 03:34:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2024-11-28 03:34:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2024-11-28 03:34:16,003 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 152 [2024-11-28 03:34:16,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:16,003 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2024-11-28 03:34:16,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.2051282051282053) internal successors, (250), 78 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2024-11-28 03:34:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:34:16,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:16,004 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:16,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-28 03:34:16,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 03:34:16,205 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:16,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1551744891, now seen corresponding path program 48 times [2024-11-28 03:34:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081975757] [2024-11-28 03:34:16,205 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:16,244 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 03:34:16,245 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 576 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081975757] [2024-11-28 03:34:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081975757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754438567] [2024-11-28 03:34:17,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:17,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:17,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:17,083 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:17,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-28 03:34:17,269 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-28 03:34:17,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:17,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 03:34:17,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 625 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:17,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1801 backedges. 625 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754438567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:18,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2024-11-28 03:34:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394531751] [2024-11-28 03:34:18,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:18,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 03:34:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:18,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 03:34:18,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:34:18,229 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:18,712 INFO L93 Difference]: Finished difference Result 169 states and 170 transitions. [2024-11-28 03:34:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 03:34:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-28 03:34:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:18,713 INFO L225 Difference]: With dead ends: 169 [2024-11-28 03:34:18,714 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:34:18,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 280 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:34:18,714 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:18,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 231 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:34:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:34:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2024-11-28 03:34:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-11-28 03:34:18,725 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2024-11-28 03:34:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:18,726 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-11-28 03:34:18,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-11-28 03:34:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 03:34:18,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:18,727 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:18,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-28 03:34:18,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 03:34:18,928 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:18,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1764931458, now seen corresponding path program 49 times [2024-11-28 03:34:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4205720] [2024-11-28 03:34:18,928 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 1178 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:20,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:20,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4205720] [2024-11-28 03:34:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4205720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:20,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520425070] [2024-11-28 03:34:20,254 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:20,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:20,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:20,256 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:20,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-28 03:34:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:20,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 03:34:20,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 1275 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:21,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 1275 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520425070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:23,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-11-28 03:34:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242324018] [2024-11-28 03:34:23,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:23,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-28 03:34:23,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:23,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-28 03:34:23,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 03:34:23,079 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 83 states, 83 states have (on average 3.2289156626506026) internal successors, (268), 83 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:23,442 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2024-11-28 03:34:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 03:34:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.2289156626506026) internal successors, (268), 83 states have internal predecessors, (268), 0 states have call successors, (0), 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 158 [2024-11-28 03:34:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:23,443 INFO L225 Difference]: With dead ends: 270 [2024-11-28 03:34:23,443 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 03:34:23,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 237 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 03:34:23,444 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:23,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 582 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 03:34:23,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-11-28 03:34:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2024-11-28 03:34:23,454 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 158 [2024-11-28 03:34:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:23,455 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2024-11-28 03:34:23,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.2289156626506026) internal successors, (268), 83 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2024-11-28 03:34:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:34:23,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:23,456 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:23,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-28 03:34:23,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:23,656 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:23,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2108734010, now seen corresponding path program 50 times [2024-11-28 03:34:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555117475] [2024-11-28 03:34:23,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:23,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:23,683 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:23,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 625 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555117475] [2024-11-28 03:34:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555117475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042062738] [2024-11-28 03:34:24,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:24,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:24,477 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:24,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-28 03:34:24,641 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:24,641 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:24,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 03:34:24,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 676 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:24,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1951 backedges. 676 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042062738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:25,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2024-11-28 03:34:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689717715] [2024-11-28 03:34:25,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:25,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:34:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:25,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:34:25,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:34:25,632 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:26,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:26,050 INFO L93 Difference]: Finished difference Result 175 states and 176 transitions. [2024-11-28 03:34:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 03:34:26,051 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 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 160 [2024-11-28 03:34:26,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:26,052 INFO L225 Difference]: With dead ends: 175 [2024-11-28 03:34:26,052 INFO L226 Difference]: Without dead ends: 173 [2024-11-28 03:34:26,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 290 SyntacticMatches, 53 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:34:26,053 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:26,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 238 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:26,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-28 03:34:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2024-11-28 03:34:26,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2024-11-28 03:34:26,064 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 160 [2024-11-28 03:34:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:26,064 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2024-11-28 03:34:26,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.15625) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2024-11-28 03:34:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 03:34:26,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:26,065 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:26,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-28 03:34:26,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:26,265 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:26,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1561190323, now seen corresponding path program 51 times [2024-11-28 03:34:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068903000] [2024-11-28 03:34:26,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:26,297 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:34:26,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1277 proven. 777 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:27,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068903000] [2024-11-28 03:34:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068903000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943298116] [2024-11-28 03:34:27,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:27,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:27,704 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:27,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-28 03:34:27,901 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:34:27,901 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:27,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 03:34:27,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1378 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:29,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1378 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943298116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:30,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:30,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-11-28 03:34:30,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002585342] [2024-11-28 03:34:30,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:30,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-28 03:34:30,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:30,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-28 03:34:30,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:34:30,672 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 86 states, 86 states have (on average 3.2325581395348837) internal successors, (278), 86 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:31,000 INFO L93 Difference]: Finished difference Result 280 states and 282 transitions. [2024-11-28 03:34:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 03:34:31,001 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.2325581395348837) internal successors, (278), 86 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-28 03:34:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:31,002 INFO L225 Difference]: With dead ends: 280 [2024-11-28 03:34:31,002 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 03:34:31,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 246 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:34:31,002 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:31,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 482 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:34:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 03:34:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-28 03:34:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-11-28 03:34:31,014 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 164 [2024-11-28 03:34:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:31,014 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-11-28 03:34:31,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.2325581395348837) internal successors, (278), 86 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-11-28 03:34:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:34:31,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:31,015 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:31,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-28 03:34:31,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 03:34:31,216 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:31,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 957606801, now seen corresponding path program 52 times [2024-11-28 03:34:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743090655] [2024-11-28 03:34:31,216 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:31,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:31,241 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:31,242 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 729 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:32,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743090655] [2024-11-28 03:34:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743090655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771404773] [2024-11-28 03:34:32,112 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:32,114 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:32,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-28 03:34:32,283 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:32,284 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:32,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 03:34:32,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 729 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:32,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2107 backedges. 729 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771404773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:33,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-11-28 03:34:33,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533666924] [2024-11-28 03:34:33,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:33,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:34:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:33,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:34:33,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:34:33,282 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:33,694 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2024-11-28 03:34:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 03:34:33,695 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 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 166 [2024-11-28 03:34:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:33,696 INFO L225 Difference]: With dead ends: 181 [2024-11-28 03:34:33,696 INFO L226 Difference]: Without dead ends: 179 [2024-11-28 03:34:33,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 303 SyntacticMatches, 54 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1304, Invalid=2118, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:34:33,696 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:33,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 199 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-28 03:34:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2024-11-28 03:34:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2024-11-28 03:34:33,706 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 166 [2024-11-28 03:34:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:33,706 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2024-11-28 03:34:33,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2024-11-28 03:34:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 03:34:33,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:33,707 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:33,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-28 03:34:33,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-28 03:34:33,908 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:33,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2013849752, now seen corresponding path program 53 times [2024-11-28 03:34:33,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:33,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116127952] [2024-11-28 03:34:33,908 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:33,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:33,957 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-11-28 03:34:33,957 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1485 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116127952] [2024-11-28 03:34:35,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116127952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444759861] [2024-11-28 03:34:35,521 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:35,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:35,523 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:35,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-28 03:34:35,732 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-11-28 03:34:35,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:35,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 03:34:35,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1485 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:37,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 1485 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444759861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:38,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 87 [2024-11-28 03:34:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837399701] [2024-11-28 03:34:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-28 03:34:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:38,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-28 03:34:38,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 03:34:38,604 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 87 states, 87 states have (on average 3.218390804597701) internal successors, (280), 87 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:38,962 INFO L93 Difference]: Finished difference Result 290 states and 292 transitions. [2024-11-28 03:34:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 03:34:38,962 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.218390804597701) internal successors, (280), 87 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-28 03:34:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:38,963 INFO L225 Difference]: With dead ends: 290 [2024-11-28 03:34:38,963 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 03:34:38,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 256 SyntacticMatches, 56 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4591 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1739, Invalid=5743, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 03:34:38,964 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:38,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 525 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:38,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 03:34:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2024-11-28 03:34:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2024-11-28 03:34:38,971 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 170 [2024-11-28 03:34:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:38,972 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2024-11-28 03:34:38,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.218390804597701) internal successors, (280), 87 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2024-11-28 03:34:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-28 03:34:38,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:38,973 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:38,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-28 03:34:39,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-28 03:34:39,173 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:39,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -812764964, now seen corresponding path program 54 times [2024-11-28 03:34:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994033956] [2024-11-28 03:34:39,174 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:39,209 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-28 03:34:39,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 729 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:40,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:40,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994033956] [2024-11-28 03:34:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994033956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737563315] [2024-11-28 03:34:40,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:34:40,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:40,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:40,068 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:40,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-28 03:34:40,281 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2024-11-28 03:34:40,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:40,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:34:40,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 784 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:40,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2269 backedges. 784 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737563315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:41,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2024-11-28 03:34:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630340570] [2024-11-28 03:34:41,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:41,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 03:34:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:41,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 03:34:41,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:34:41,349 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:41,801 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2024-11-28 03:34:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 03:34:41,802 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 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 172 [2024-11-28 03:34:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:41,802 INFO L225 Difference]: With dead ends: 187 [2024-11-28 03:34:41,802 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 03:34:41,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 313 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:34:41,803 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:41,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 216 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 03:34:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2024-11-28 03:34:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2024-11-28 03:34:41,814 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 172 [2024-11-28 03:34:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:41,814 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2024-11-28 03:34:41,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2024-11-28 03:34:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:34:41,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:41,815 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:41,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-28 03:34:42,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-28 03:34:42,016 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:42,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 301568099, now seen corresponding path program 55 times [2024-11-28 03:34:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096399657] [2024-11-28 03:34:42,016 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1487 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096399657] [2024-11-28 03:34:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096399657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801879955] [2024-11-28 03:34:43,609 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:34:43,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:43,610 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:43,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-28 03:34:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:43,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 03:34:43,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1596 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:45,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1596 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801879955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:46,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-11-28 03:34:46,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620191134] [2024-11-28 03:34:46,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:46,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-28 03:34:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:46,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-28 03:34:46,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 03:34:46,938 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 92 states, 92 states have (on average 3.239130434782609) internal successors, (298), 92 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:47,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:47,393 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2024-11-28 03:34:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-28 03:34:47,394 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.239130434782609) internal successors, (298), 92 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2024-11-28 03:34:47,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:47,395 INFO L225 Difference]: With dead ends: 300 [2024-11-28 03:34:47,395 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 03:34:47,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 264 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 03:34:47,395 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:47,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 759 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 03:34:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2024-11-28 03:34:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2024-11-28 03:34:47,408 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 176 [2024-11-28 03:34:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:47,408 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2024-11-28 03:34:47,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.239130434782609) internal successors, (298), 92 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2024-11-28 03:34:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 03:34:47,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:47,409 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:47,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-28 03:34:47,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-28 03:34:47,609 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:47,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1081043545, now seen corresponding path program 56 times [2024-11-28 03:34:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:47,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539438274] [2024-11-28 03:34:47,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:47,635 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:47,635 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 784 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539438274] [2024-11-28 03:34:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539438274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525269079] [2024-11-28 03:34:48,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:34:48,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:48,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:48,495 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:48,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-28 03:34:48,679 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:34:48,680 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:48,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 03:34:48,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 841 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:48,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 841 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525269079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:49,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:49,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2024-11-28 03:34:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597283036] [2024-11-28 03:34:49,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:49,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:34:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:49,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:34:49,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:34:49,820 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:50,322 INFO L93 Difference]: Finished difference Result 193 states and 194 transitions. [2024-11-28 03:34:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 03:34:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 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 178 [2024-11-28 03:34:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:50,324 INFO L225 Difference]: With dead ends: 193 [2024-11-28 03:34:50,324 INFO L226 Difference]: Without dead ends: 191 [2024-11-28 03:34:50,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 323 SyntacticMatches, 59 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:34:50,324 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:50,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 289 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:34:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-28 03:34:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2024-11-28 03:34:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.010989010989011) internal successors, (184), 182 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-11-28 03:34:50,337 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 178 [2024-11-28 03:34:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:50,337 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-11-28 03:34:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.228571428571429) internal successors, (183), 35 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-11-28 03:34:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 03:34:50,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:50,338 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:50,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-28 03:34:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-28 03:34:50,539 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1118398546, now seen corresponding path program 57 times [2024-11-28 03:34:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389423878] [2024-11-28 03:34:50,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:50,583 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-28 03:34:50,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 1598 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:52,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389423878] [2024-11-28 03:34:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389423878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:52,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081814586] [2024-11-28 03:34:52,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:34:52,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:52,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:52,443 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:52,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-28 03:34:52,674 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-28 03:34:52,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:52,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:34:52,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 1711 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:54,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 1711 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081814586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:56,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:56,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-11-28 03:34:56,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502855802] [2024-11-28 03:34:56,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:56,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 03:34:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:56,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 03:34:56,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 03:34:56,020 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 95 states, 95 states have (on average 3.2421052631578946) internal successors, (308), 95 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:56,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:56,398 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2024-11-28 03:34:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 03:34:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.2421052631578946) internal successors, (308), 95 states have internal predecessors, (308), 0 states have call successors, (0), 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 182 [2024-11-28 03:34:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:56,400 INFO L225 Difference]: With dead ends: 310 [2024-11-28 03:34:56,400 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 03:34:56,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 273 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 03:34:56,400 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:56,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 544 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:34:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 03:34:56,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-11-28 03:34:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 184 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2024-11-28 03:34:56,414 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 182 [2024-11-28 03:34:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:56,414 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2024-11-28 03:34:56,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.2421052631578946) internal successors, (308), 95 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2024-11-28 03:34:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 03:34:56,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:56,415 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:56,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-28 03:34:56,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 03:34:56,616 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:56,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 704485874, now seen corresponding path program 58 times [2024-11-28 03:34:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146699206] [2024-11-28 03:34:56,617 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:56,647 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:56,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 900 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:57,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146699206] [2024-11-28 03:34:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146699206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465359436] [2024-11-28 03:34:57,563 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:34:57,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:57,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:57,564 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:57,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-28 03:34:57,760 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:34:57,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:34:57,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 03:34:57,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 900 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:58,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 900 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465359436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:59,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:59,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 35 [2024-11-28 03:34:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696298672] [2024-11-28 03:34:59,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:59,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:34:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:59,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:34:59,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:34:59,032 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 35 states, 35 states have (on average 5.314285714285714) internal successors, (186), 35 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:59,509 INFO L93 Difference]: Finished difference Result 199 states and 200 transitions. [2024-11-28 03:34:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 03:34:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.314285714285714) internal successors, (186), 35 states have internal predecessors, (186), 0 states have call successors, (0), 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 184 [2024-11-28 03:34:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:59,510 INFO L225 Difference]: With dead ends: 199 [2024-11-28 03:34:59,510 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 03:34:59,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 336 SyntacticMatches, 60 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1583, Invalid=2577, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:34:59,511 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:59,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 209 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:34:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 03:34:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2024-11-28 03:34:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2024-11-28 03:34:59,525 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 184 [2024-11-28 03:34:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:59,525 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2024-11-28 03:34:59,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.314285714285714) internal successors, (186), 35 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:34:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2024-11-28 03:34:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 03:34:59,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:59,526 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-28 03:34:59,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-28 03:34:59,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:59,727 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:59,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1707245177, now seen corresponding path program 59 times [2024-11-28 03:34:59,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546187800] [2024-11-28 03:34:59,727 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:34:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:59,782 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 03:34:59,782 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1830 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:01,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:01,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546187800] [2024-11-28 03:35:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546187800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:01,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233887459] [2024-11-28 03:35:01,658 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:01,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:01,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:01,659 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:01,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-28 03:35:01,899 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-28 03:35:01,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:01,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 03:35:01,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1830 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:03,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1830 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233887459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:05,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 96 [2024-11-28 03:35:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473102232] [2024-11-28 03:35:05,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:05,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-28 03:35:05,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:05,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-28 03:35:05,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2111, Invalid=7009, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 03:35:05,417 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 96 states, 96 states have (on average 3.2291666666666665) internal successors, (310), 96 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:05,785 INFO L93 Difference]: Finished difference Result 320 states and 322 transitions. [2024-11-28 03:35:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-28 03:35:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.2291666666666665) internal successors, (310), 96 states have internal predecessors, (310), 0 states have call successors, (0), 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 188 [2024-11-28 03:35:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:05,787 INFO L225 Difference]: With dead ends: 320 [2024-11-28 03:35:05,787 INFO L226 Difference]: Without dead ends: 192 [2024-11-28 03:35:05,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 283 SyntacticMatches, 62 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5641 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2111, Invalid=7009, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 03:35:05,787 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 1 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:05,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 481 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:35:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-28 03:35:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2024-11-28 03:35:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 190 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-11-28 03:35:05,802 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 188 [2024-11-28 03:35:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:05,802 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-11-28 03:35:05,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.2291666666666665) internal successors, (310), 96 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-11-28 03:35:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-28 03:35:05,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:05,803 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:05,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-28 03:35:06,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-11-28 03:35:06,007 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:06,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1388821949, now seen corresponding path program 60 times [2024-11-28 03:35:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966441395] [2024-11-28 03:35:06,007 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:06,043 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-11-28 03:35:06,043 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 900 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966441395] [2024-11-28 03:35:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966441395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652685420] [2024-11-28 03:35:07,021 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:07,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:07,023 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:07,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-28 03:35:07,269 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-11-28 03:35:07,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:07,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 03:35:07,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 961 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:07,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 961 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652685420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:08,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:08,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2024-11-28 03:35:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247132033] [2024-11-28 03:35:08,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:08,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 03:35:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:08,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 03:35:08,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:35:08,515 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 37 states, 37 states have (on average 5.27027027027027) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:09,058 INFO L93 Difference]: Finished difference Result 205 states and 206 transitions. [2024-11-28 03:35:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-28 03:35:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.27027027027027) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 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 190 [2024-11-28 03:35:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:09,059 INFO L225 Difference]: With dead ends: 205 [2024-11-28 03:35:09,059 INFO L226 Difference]: Without dead ends: 203 [2024-11-28 03:35:09,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 346 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:35:09,059 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:09,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 298 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-28 03:35:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2024-11-28 03:35:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0103092783505154) internal successors, (196), 194 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2024-11-28 03:35:09,070 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 190 [2024-11-28 03:35:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:09,070 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2024-11-28 03:35:09,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.27027027027027) internal successors, (195), 37 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2024-11-28 03:35:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-28 03:35:09,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:09,071 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:09,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:09,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:09,272 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:09,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash 300926148, now seen corresponding path program 61 times [2024-11-28 03:35:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:09,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464559643] [2024-11-28 03:35:09,272 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 1832 proven. 1082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:11,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464559643] [2024-11-28 03:35:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464559643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876532693] [2024-11-28 03:35:11,220 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:11,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:11,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:11,222 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:11,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-28 03:35:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:11,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 03:35:11,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 1953 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:13,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 1953 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876532693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:15,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:15,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-11-28 03:35:15,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478480294] [2024-11-28 03:35:15,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:15,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-28 03:35:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:15,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-28 03:35:15,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 03:35:15,058 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:15,498 INFO L93 Difference]: Finished difference Result 330 states and 332 transitions. [2024-11-28 03:35:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-28 03:35:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 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 194 [2024-11-28 03:35:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:15,500 INFO L225 Difference]: With dead ends: 330 [2024-11-28 03:35:15,500 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 03:35:15,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 291 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 03:35:15,500 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 1 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:15,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 630 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:35:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 03:35:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-11-28 03:35:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2024-11-28 03:35:15,513 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 194 [2024-11-28 03:35:15,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:15,514 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2024-11-28 03:35:15,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2024-11-28 03:35:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 03:35:15,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,515 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:15,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-28 03:35:15,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:15,716 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash 485589256, now seen corresponding path program 62 times [2024-11-28 03:35:15,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530190370] [2024-11-28 03:35:15,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:15,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,744 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:15,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2977 backedges. 961 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530190370] [2024-11-28 03:35:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530190370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011501931] [2024-11-28 03:35:16,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:16,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:16,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:16,782 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:16,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-28 03:35:16,993 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:16,993 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:16,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 03:35:16,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2977 backedges. 1024 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:17,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2977 backedges. 1024 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:18,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011501931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:18,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:18,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2024-11-28 03:35:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337735681] [2024-11-28 03:35:18,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:18,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:35:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:18,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:35:18,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:35:18,356 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 38 states, 38 states have (on average 5.2894736842105265) internal successors, (201), 38 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:18,953 INFO L93 Difference]: Finished difference Result 211 states and 212 transitions. [2024-11-28 03:35:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-28 03:35:18,954 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.2894736842105265) internal successors, (201), 38 states have internal predecessors, (201), 0 states have call successors, (0), 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 196 [2024-11-28 03:35:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:18,955 INFO L225 Difference]: With dead ends: 211 [2024-11-28 03:35:18,955 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 03:35:18,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 356 SyntacticMatches, 65 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:35:18,956 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:18,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 368 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 03:35:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 201. [2024-11-28 03:35:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.01) internal successors, (202), 200 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2024-11-28 03:35:18,969 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 196 [2024-11-28 03:35:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:18,969 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2024-11-28 03:35:18,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.2894736842105265) internal successors, (201), 38 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2024-11-28 03:35:18,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-28 03:35:18,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:18,970 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:18,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-28 03:35:19,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:19,171 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:19,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:19,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1604381327, now seen corresponding path program 63 times [2024-11-28 03:35:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522087297] [2024-11-28 03:35:19,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:19,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-11-28 03:35:19,225 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 1955 proven. 1149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:21,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522087297] [2024-11-28 03:35:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522087297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:21,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361649318] [2024-11-28 03:35:21,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:21,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:21,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:21,294 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:21,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-28 03:35:21,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-11-28 03:35:21,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:21,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 03:35:21,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2080 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:23,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2080 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:25,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361649318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:25,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:25,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-11-28 03:35:25,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064457638] [2024-11-28 03:35:25,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:25,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-28 03:35:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:25,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-28 03:35:25,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 03:35:25,381 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 104 states, 104 states have (on average 3.25) internal successors, (338), 104 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:25,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:25,825 INFO L93 Difference]: Finished difference Result 340 states and 342 transitions. [2024-11-28 03:35:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 03:35:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.25) internal successors, (338), 104 states have internal predecessors, (338), 0 states have call successors, (0), 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 200 [2024-11-28 03:35:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:25,827 INFO L225 Difference]: With dead ends: 340 [2024-11-28 03:35:25,827 INFO L226 Difference]: Without dead ends: 204 [2024-11-28 03:35:25,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 300 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 03:35:25,828 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:25,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 631 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:35:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-28 03:35:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2024-11-28 03:35:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.00990099009901) internal successors, (204), 202 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2024-11-28 03:35:25,843 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 200 [2024-11-28 03:35:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:25,843 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2024-11-28 03:35:25,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.25) internal successors, (338), 104 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2024-11-28 03:35:25,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 03:35:25,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:25,844 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:25,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-28 03:35:26,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:26,045 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:26,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2037554221, now seen corresponding path program 64 times [2024-11-28 03:35:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243492458] [2024-11-28 03:35:26,045 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:26,083 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:26,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1089 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243492458] [2024-11-28 03:35:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243492458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670631661] [2024-11-28 03:35:27,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:27,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:27,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:27,215 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:27,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-28 03:35:27,441 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:27,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:27,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 03:35:27,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1089 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:27,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1089 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670631661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:28,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:28,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-11-28 03:35:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071791009] [2024-11-28 03:35:28,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:28,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:35:28,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:28,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:35:28,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:35:28,806 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand has 38 states, 38 states have (on average 5.368421052631579) internal successors, (204), 38 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:29,370 INFO L93 Difference]: Finished difference Result 217 states and 218 transitions. [2024-11-28 03:35:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-28 03:35:29,370 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.368421052631579) internal successors, (204), 38 states have internal predecessors, (204), 0 states have call successors, (0), 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 202 [2024-11-28 03:35:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:29,371 INFO L225 Difference]: With dead ends: 217 [2024-11-28 03:35:29,371 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 03:35:29,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 369 SyntacticMatches, 66 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1889, Invalid=3081, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:35:29,372 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:29,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 262 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 03:35:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2024-11-28 03:35:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-11-28 03:35:29,388 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2024-11-28 03:35:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:29,388 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-11-28 03:35:29,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.368421052631579) internal successors, (204), 38 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:29,389 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-11-28 03:35:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 03:35:29,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:29,390 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:29,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-28 03:35:29,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:29,591 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:29,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash -5738534, now seen corresponding path program 65 times [2024-11-28 03:35:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:29,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71161859] [2024-11-28 03:35:29,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:29,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:29,659 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-11-28 03:35:29,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2211 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:31,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71161859] [2024-11-28 03:35:31,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71161859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733526934] [2024-11-28 03:35:31,843 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:31,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:31,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:31,845 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:31,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-28 03:35:32,123 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-11-28 03:35:32,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:32,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 03:35:32,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2211 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:34,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2211 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733526934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:36,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:36,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 105 [2024-11-28 03:35:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622934166] [2024-11-28 03:35:36,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:36,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 03:35:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:36,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 03:35:36,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2519, Invalid=8401, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 03:35:36,356 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 105 states, 105 states have (on average 3.238095238095238) internal successors, (340), 105 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:36,934 INFO L93 Difference]: Finished difference Result 350 states and 352 transitions. [2024-11-28 03:35:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 03:35:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.238095238095238) internal successors, (340), 105 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-28 03:35:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:36,935 INFO L225 Difference]: With dead ends: 350 [2024-11-28 03:35:36,936 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 03:35:36,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 310 SyntacticMatches, 68 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6799 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2519, Invalid=8401, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 03:35:36,936 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 1 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:36,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 847 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:35:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 03:35:36,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2024-11-28 03:35:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2024-11-28 03:35:36,952 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 206 [2024-11-28 03:35:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:36,952 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2024-11-28 03:35:36,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.238095238095238) internal successors, (340), 105 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:36,953 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2024-11-28 03:35:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 03:35:36,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:36,954 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:36,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-28 03:35:37,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:37,158 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:37,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 616424990, now seen corresponding path program 66 times [2024-11-28 03:35:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900665257] [2024-11-28 03:35:37,158 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:37,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:37,210 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-28 03:35:37,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 1089 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900665257] [2024-11-28 03:35:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900665257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117572639] [2024-11-28 03:35:38,398 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:38,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:38,400 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:38,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-28 03:35:38,684 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-28 03:35:38,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:38,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 03:35:38,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 1156 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:39,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 1156 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117572639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:40,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:40,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2024-11-28 03:35:40,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068718863] [2024-11-28 03:35:40,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:40,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:35:40,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:40,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:35:40,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:35:40,263 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 40 states, 40 states have (on average 5.325) internal successors, (213), 40 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) [2024-11-28 03:35:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:40,881 INFO L93 Difference]: Finished difference Result 223 states and 224 transitions. [2024-11-28 03:35:40,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-28 03:35:40,881 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.325) internal successors, (213), 40 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 208 [2024-11-28 03:35:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:40,882 INFO L225 Difference]: With dead ends: 223 [2024-11-28 03:35:40,882 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 03:35:40,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 379 SyntacticMatches, 68 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2024-11-28 03:35:40,883 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:40,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 322 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 03:35:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2024-11-28 03:35:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2024-11-28 03:35:40,899 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 208 [2024-11-28 03:35:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:40,899 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2024-11-28 03:35:40,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.325) internal successors, (213), 40 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) [2024-11-28 03:35:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2024-11-28 03:35:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-28 03:35:40,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:40,900 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:40,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-28 03:35:41,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-28 03:35:41,101 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:41,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash 837342373, now seen corresponding path program 67 times [2024-11-28 03:35:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:41,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051751476] [2024-11-28 03:35:41,101 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 2213 proven. 1289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051751476] [2024-11-28 03:35:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051751476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964811314] [2024-11-28 03:35:43,398 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:43,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:43,399 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-28 03:35:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:43,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 03:35:43,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 2346 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:46,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 2346 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:47,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964811314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:47,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-11-28 03:35:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924072257] [2024-11-28 03:35:47,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:47,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-28 03:35:47,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:47,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-28 03:35:47,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 03:35:47,920 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand has 110 states, 110 states have (on average 3.2545454545454544) internal successors, (358), 110 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:48,570 INFO L93 Difference]: Finished difference Result 360 states and 362 transitions. [2024-11-28 03:35:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 03:35:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.2545454545454544) internal successors, (358), 110 states have internal predecessors, (358), 0 states have call successors, (0), 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 212 [2024-11-28 03:35:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:48,571 INFO L225 Difference]: With dead ends: 360 [2024-11-28 03:35:48,572 INFO L226 Difference]: Without dead ends: 216 [2024-11-28 03:35:48,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 318 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 03:35:48,572 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:48,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1028 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:35:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-28 03:35:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2024-11-28 03:35:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 214 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-11-28 03:35:48,581 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 212 [2024-11-28 03:35:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:48,582 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-11-28 03:35:48,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.2545454545454544) internal successors, (358), 110 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-11-28 03:35:48,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-28 03:35:48,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:48,583 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:48,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:48,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-28 03:35:48,783 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:48,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1615493143, now seen corresponding path program 68 times [2024-11-28 03:35:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:48,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202504767] [2024-11-28 03:35:48,784 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:48,814 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:48,815 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 1156 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202504767] [2024-11-28 03:35:50,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202504767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:50,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629031172] [2024-11-28 03:35:50,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:50,053 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:50,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-28 03:35:50,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:50,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:50,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-28 03:35:50,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 1225 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:50,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 1225 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629031172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:51,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:51,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 41 [2024-11-28 03:35:51,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318382631] [2024-11-28 03:35:51,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:51,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:35:51,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:51,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:35:51,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:35:51,806 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 41 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:52,449 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2024-11-28 03:35:52,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-28 03:35:52,449 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 41 states have internal predecessors, (219), 0 states have call successors, (0), 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 214 [2024-11-28 03:35:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:52,451 INFO L225 Difference]: With dead ends: 229 [2024-11-28 03:35:52,451 INFO L226 Difference]: Without dead ends: 227 [2024-11-28 03:35:52,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 389 SyntacticMatches, 71 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 03:35:52,452 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:52,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 318 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-28 03:35:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 219. [2024-11-28 03:35:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2024-11-28 03:35:52,469 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2024-11-28 03:35:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:52,469 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2024-11-28 03:35:52,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.341463414634147) internal successors, (219), 41 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:52,470 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2024-11-28 03:35:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-28 03:35:52,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:52,471 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:52,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-28 03:35:52,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-28 03:35:52,671 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:52,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1096063216, now seen corresponding path program 69 times [2024-11-28 03:35:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562768706] [2024-11-28 03:35:52,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:52,723 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-11-28 03:35:52,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 2348 proven. 1362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562768706] [2024-11-28 03:35:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562768706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125513646] [2024-11-28 03:35:55,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:55,124 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:55,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-28 03:35:55,423 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-11-28 03:35:55,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:55,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 03:35:55,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 2485 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:57,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3710 backedges. 2485 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125513646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:59,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:59,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-11-28 03:35:59,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201074122] [2024-11-28 03:35:59,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:59,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-28 03:35:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:59,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-28 03:35:59,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 03:35:59,882 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand has 113 states, 113 states have (on average 3.256637168141593) internal successors, (368), 113 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:00,407 INFO L93 Difference]: Finished difference Result 370 states and 372 transitions. [2024-11-28 03:36:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 03:36:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.256637168141593) internal successors, (368), 113 states have internal predecessors, (368), 0 states have call successors, (0), 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 218 [2024-11-28 03:36:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:00,409 INFO L225 Difference]: With dead ends: 370 [2024-11-28 03:36:00,409 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 03:36:00,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 327 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 03:36:00,410 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:00,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 734 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:36:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 03:36:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 221. [2024-11-28 03:36:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.009090909090909) internal successors, (222), 220 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2024-11-28 03:36:00,428 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 218 [2024-11-28 03:36:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:00,428 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2024-11-28 03:36:00,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.256637168141593) internal successors, (368), 113 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2024-11-28 03:36:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-28 03:36:00,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:00,429 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:00,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-28 03:36:00,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:00,630 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:00,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash 783730996, now seen corresponding path program 70 times [2024-11-28 03:36:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601058601] [2024-11-28 03:36:00,631 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:00,666 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:00,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 1296 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601058601] [2024-11-28 03:36:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601058601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:01,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448421979] [2024-11-28 03:36:01,988 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:01,989 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-28 03:36:02,259 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:02,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:02,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-28 03:36:02,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 1296 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:02,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 1296 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:03,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448421979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:03,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 41 [2024-11-28 03:36:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979262843] [2024-11-28 03:36:03,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:03,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:36:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:03,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:36:03,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=894, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:36:03,879 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:04,513 INFO L93 Difference]: Finished difference Result 235 states and 236 transitions. [2024-11-28 03:36:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-28 03:36:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 0 states have call successors, (0), 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 220 [2024-11-28 03:36:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:04,514 INFO L225 Difference]: With dead ends: 235 [2024-11-28 03:36:04,514 INFO L226 Difference]: Without dead ends: 233 [2024-11-28 03:36:04,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 401 SyntacticMatches, 73 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2222, Invalid=3630, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 03:36:04,514 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:04,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:36:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-28 03:36:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 225. [2024-11-28 03:36:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.0089285714285714) internal successors, (226), 224 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2024-11-28 03:36:04,531 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 220 [2024-11-28 03:36:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:04,532 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2024-11-28 03:36:04,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2024-11-28 03:36:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-28 03:36:04,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:04,533 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:04,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-28 03:36:04,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:04,737 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:04,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:04,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1164101, now seen corresponding path program 71 times [2024-11-28 03:36:04,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:04,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006425840] [2024-11-28 03:36:04,737 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:36:04,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:04,800 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-28 03:36:04,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 2628 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006425840] [2024-11-28 03:36:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006425840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851957496] [2024-11-28 03:36:07,400 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:36:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:07,402 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:07,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-28 03:36:07,712 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-28 03:36:07,712 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:07,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-28 03:36:07,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 2628 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:10,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 2628 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851957496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:12,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:12,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 114 [2024-11-28 03:36:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514503541] [2024-11-28 03:36:12,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:12,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-28 03:36:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:12,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-28 03:36:12,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2963, Invalid=9919, Unknown=0, NotChecked=0, Total=12882 [2024-11-28 03:36:12,547 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 114 states, 114 states have (on average 3.245614035087719) internal successors, (370), 114 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:13,075 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2024-11-28 03:36:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-28 03:36:13,076 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.245614035087719) internal successors, (370), 114 states have internal predecessors, (370), 0 states have call successors, (0), 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 224 [2024-11-28 03:36:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:13,078 INFO L225 Difference]: With dead ends: 380 [2024-11-28 03:36:13,078 INFO L226 Difference]: Without dead ends: 228 [2024-11-28 03:36:13,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 337 SyntacticMatches, 74 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8065 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2963, Invalid=9919, Unknown=0, NotChecked=0, Total=12882 [2024-11-28 03:36:13,078 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 1 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:13,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 608 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:36:13,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-28 03:36:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2024-11-28 03:36:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.008849557522124) internal successors, (228), 226 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2024-11-28 03:36:13,097 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 224 [2024-11-28 03:36:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:13,097 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2024-11-28 03:36:13,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.245614035087719) internal successors, (370), 114 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2024-11-28 03:36:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-28 03:36:13,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:13,098 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:13,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-28 03:36:13,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:13,299 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:13,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 336865791, now seen corresponding path program 72 times [2024-11-28 03:36:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855610393] [2024-11-28 03:36:13,299 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:13,367 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2024-11-28 03:36:13,367 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3997 backedges. 1296 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855610393] [2024-11-28 03:36:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855610393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787992248] [2024-11-28 03:36:14,750 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:14,752 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:14,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-28 03:36:15,068 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2024-11-28 03:36:15,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:15,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 03:36:15,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3997 backedges. 1369 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:15,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3997 backedges. 1369 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787992248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:16,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 43 [2024-11-28 03:36:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549584927] [2024-11-28 03:36:16,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:16,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 03:36:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:16,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 03:36:16,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:36:16,744 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand has 43 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:17,441 INFO L93 Difference]: Finished difference Result 241 states and 242 transitions. [2024-11-28 03:36:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-28 03:36:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 0 states have call successors, (0), 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 226 [2024-11-28 03:36:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:17,442 INFO L225 Difference]: With dead ends: 241 [2024-11-28 03:36:17,442 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 03:36:17,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 412 SyntacticMatches, 74 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2342, Invalid=3978, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 03:36:17,443 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:17,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 296 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:36:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 03:36:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2024-11-28 03:36:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.008695652173913) internal successors, (232), 230 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-11-28 03:36:17,457 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 226 [2024-11-28 03:36:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:17,457 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-11-28 03:36:17,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.372093023255814) internal successors, (231), 43 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-11-28 03:36:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-28 03:36:17,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:17,458 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:17,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-28 03:36:17,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-28 03:36:17,659 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:17,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1120419846, now seen corresponding path program 73 times [2024-11-28 03:36:17,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:17,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962867058] [2024-11-28 03:36:17,659 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:36:17,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2630 proven. 1514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:20,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962867058] [2024-11-28 03:36:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962867058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193972299] [2024-11-28 03:36:20,365 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:36:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:20,369 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:20,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-28 03:36:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:20,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 03:36:20,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2775 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:23,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4144 backedges. 2775 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193972299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:25,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-11-28 03:36:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970811852] [2024-11-28 03:36:25,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:25,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 03:36:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:25,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 03:36:25,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 03:36:25,540 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 119 states, 119 states have (on average 3.2605042016806722) internal successors, (388), 119 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:26,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:26,171 INFO L93 Difference]: Finished difference Result 390 states and 392 transitions. [2024-11-28 03:36:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-28 03:36:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.2605042016806722) internal successors, (388), 119 states have internal predecessors, (388), 0 states have call successors, (0), 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 230 [2024-11-28 03:36:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:26,173 INFO L225 Difference]: With dead ends: 390 [2024-11-28 03:36:26,173 INFO L226 Difference]: Without dead ends: 234 [2024-11-28 03:36:26,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 345 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 03:36:26,174 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 1 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:26,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 931 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:36:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-28 03:36:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2024-11-28 03:36:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2024-11-28 03:36:26,190 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 230 [2024-11-28 03:36:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:26,190 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2024-11-28 03:36:26,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.2605042016806722) internal successors, (388), 119 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2024-11-28 03:36:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-28 03:36:26,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:26,191 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:26,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-11-28 03:36:26,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:26,392 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:26,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash 422586954, now seen corresponding path program 74 times [2024-11-28 03:36:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:26,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319158798] [2024-11-28 03:36:26,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:36:26,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:26,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:36:26,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4219 backedges. 1369 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:27,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319158798] [2024-11-28 03:36:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319158798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:27,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739047724] [2024-11-28 03:36:27,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:36:27,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:27,932 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:27,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-28 03:36:28,198 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:36:28,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:28,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-28 03:36:28,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4219 backedges. 1444 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:28,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4219 backedges. 1444 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739047724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:29,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 44 [2024-11-28 03:36:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565975954] [2024-11-28 03:36:29,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:29,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:36:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:29,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:36:29,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:36:29,931 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 44 states, 44 states have (on average 5.386363636363637) internal successors, (237), 44 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:30,756 INFO L93 Difference]: Finished difference Result 247 states and 248 transitions. [2024-11-28 03:36:30,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-28 03:36:30,756 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.386363636363637) internal successors, (237), 44 states have internal predecessors, (237), 0 states have call successors, (0), 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 232 [2024-11-28 03:36:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:30,758 INFO L225 Difference]: With dead ends: 247 [2024-11-28 03:36:30,758 INFO L226 Difference]: Without dead ends: 245 [2024-11-28 03:36:30,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 422 SyntacticMatches, 77 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2462, Invalid=4180, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 03:36:30,759 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:30,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 354 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:36:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-28 03:36:30,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 237. [2024-11-28 03:36:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 236 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2024-11-28 03:36:30,780 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 232 [2024-11-28 03:36:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:30,780 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2024-11-28 03:36:30,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.386363636363637) internal successors, (237), 44 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2024-11-28 03:36:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-28 03:36:30,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:30,782 INFO L218 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:30,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-28 03:36:30,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-28 03:36:30,983 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:30,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1577394897, now seen corresponding path program 75 times [2024-11-28 03:36:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976542235] [2024-11-28 03:36:30,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:36:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:31,030 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-11-28 03:36:31,030 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2777 proven. 1593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976542235] [2024-11-28 03:36:34,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976542235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:34,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447290217] [2024-11-28 03:36:34,198 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:36:34,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:34,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:34,200 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:34,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-28 03:36:34,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-11-28 03:36:34,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:34,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 03:36:34,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2926 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:37,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2926 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:39,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447290217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:39,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-11-28 03:36:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881942138] [2024-11-28 03:36:39,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:39,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-28 03:36:39,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:40,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-28 03:36:40,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 03:36:40,001 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand has 122 states, 122 states have (on average 3.262295081967213) internal successors, (398), 122 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:40,832 INFO L93 Difference]: Finished difference Result 400 states and 402 transitions. [2024-11-28 03:36:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 03:36:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.262295081967213) internal successors, (398), 122 states have internal predecessors, (398), 0 states have call successors, (0), 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 236 [2024-11-28 03:36:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:40,833 INFO L225 Difference]: With dead ends: 400 [2024-11-28 03:36:40,833 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 03:36:40,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 354 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 03:36:40,835 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 1 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:40,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 899 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:36:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 03:36:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2024-11-28 03:36:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 238 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-11-28 03:36:40,854 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 236 [2024-11-28 03:36:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:40,855 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-11-28 03:36:40,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.262295081967213) internal successors, (398), 122 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:40,855 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-11-28 03:36:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-28 03:36:40,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:40,856 INFO L218 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:40,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-28 03:36:41,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-11-28 03:36:41,057 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:41,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:41,057 INFO L85 PathProgramCache]: Analyzing trace with hash 175983125, now seen corresponding path program 76 times [2024-11-28 03:36:41,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:41,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405889894] [2024-11-28 03:36:41,057 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:41,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:41,098 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:41,098 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 1521 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405889894] [2024-11-28 03:36:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405889894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056231054] [2024-11-28 03:36:42,703 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:42,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:42,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:42,704 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:42,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-28 03:36:42,986 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:42,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:42,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 03:36:42,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 1521 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:43,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4447 backedges. 1521 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:44,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056231054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:44,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:44,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-28 03:36:44,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614640429] [2024-11-28 03:36:44,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:44,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:36:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:44,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:36:44,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=866, Invalid=1026, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:36:44,878 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 44 states, 44 states have (on average 5.454545454545454) internal successors, (240), 44 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:45,616 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2024-11-28 03:36:45,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 03:36:45,616 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.454545454545454) internal successors, (240), 44 states have internal predecessors, (240), 0 states have call successors, (0), 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 238 [2024-11-28 03:36:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:45,617 INFO L225 Difference]: With dead ends: 253 [2024-11-28 03:36:45,617 INFO L226 Difference]: Without dead ends: 251 [2024-11-28 03:36:45,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 435 SyntacticMatches, 78 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3043 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2582, Invalid=4224, Unknown=0, NotChecked=0, Total=6806 [2024-11-28 03:36:45,618 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:45,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 305 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:36:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-28 03:36:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 243. [2024-11-28 03:36:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 242 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2024-11-28 03:36:45,635 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 238 [2024-11-28 03:36:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:45,635 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2024-11-28 03:36:45,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.454545454545454) internal successors, (240), 44 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2024-11-28 03:36:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-28 03:36:45,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:45,636 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:45,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-11-28 03:36:45,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-11-28 03:36:45,837 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:45,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1596496612, now seen corresponding path program 77 times [2024-11-28 03:36:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066083581] [2024-11-28 03:36:45,838 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:36:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:45,932 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-11-28 03:36:45,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4602 backedges. 3081 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066083581] [2024-11-28 03:36:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066083581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779735050] [2024-11-28 03:36:48,951 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:36:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:48,953 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:48,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-28 03:36:49,304 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-11-28 03:36:49,304 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:49,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-28 03:36:49,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4602 backedges. 3081 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:52,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4602 backedges. 3081 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779735050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:54,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 123 [2024-11-28 03:36:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542508742] [2024-11-28 03:36:54,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:54,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-28 03:36:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:54,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-28 03:36:54,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3443, Invalid=11563, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 03:36:54,727 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand has 123 states, 123 states have (on average 3.252032520325203) internal successors, (400), 123 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:55,412 INFO L93 Difference]: Finished difference Result 410 states and 412 transitions. [2024-11-28 03:36:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-28 03:36:55,413 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 3.252032520325203) internal successors, (400), 123 states have internal predecessors, (400), 0 states have call successors, (0), 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 242 [2024-11-28 03:36:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:55,414 INFO L225 Difference]: With dead ends: 410 [2024-11-28 03:36:55,414 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 03:36:55,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 364 SyntacticMatches, 80 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9439 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3443, Invalid=11563, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 03:36:55,415 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:55,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 877 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:36:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 03:36:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 245. [2024-11-28 03:36:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 244 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2024-11-28 03:36:55,436 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 242 [2024-11-28 03:36:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:55,436 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2024-11-28 03:36:55,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 3.252032520325203) internal successors, (400), 123 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2024-11-28 03:36:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-28 03:36:55,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:55,438 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:55,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-28 03:36:55,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-28 03:36:55,638 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:55,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 863897952, now seen corresponding path program 78 times [2024-11-28 03:36:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8348763] [2024-11-28 03:36:55,639 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:55,702 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-11-28 03:36:55,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4681 backedges. 1521 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:57,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:57,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8348763] [2024-11-28 03:36:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8348763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669927856] [2024-11-28 03:36:57,316 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:36:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:57,317 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:57,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-28 03:36:57,677 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-11-28 03:36:57,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:57,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-28 03:36:57,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4681 backedges. 1600 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:57,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4681 backedges. 1600 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669927856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:59,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 46 [2024-11-28 03:36:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302700021] [2024-11-28 03:36:59,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:59,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:36:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:59,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:36:59,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:36:59,595 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:00,409 INFO L93 Difference]: Finished difference Result 259 states and 260 transitions. [2024-11-28 03:37:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-28 03:37:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 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 244 [2024-11-28 03:37:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:00,411 INFO L225 Difference]: With dead ends: 259 [2024-11-28 03:37:00,411 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 03:37:00,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 445 SyntacticMatches, 80 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2711, Invalid=4599, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:37:00,411 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:00,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 346 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:37:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 03:37:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2024-11-28 03:37:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 248 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2024-11-28 03:37:00,432 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 244 [2024-11-28 03:37:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:00,432 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2024-11-28 03:37:00,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2024-11-28 03:37:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-28 03:37:00,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:00,434 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:00,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-28 03:37:00,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-28 03:37:00,634 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:00,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash -780040473, now seen corresponding path program 79 times [2024-11-28 03:37:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668156602] [2024-11-28 03:37:00,635 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 3083 proven. 1757 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668156602] [2024-11-28 03:37:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668156602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534110276] [2024-11-28 03:37:03,821 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:03,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:03,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:03,823 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:03,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-28 03:37:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:04,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 03:37:04,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 3240 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:07,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4840 backedges. 3240 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534110276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:09,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:09,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-11-28 03:37:09,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332249818] [2024-11-28 03:37:09,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:09,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-28 03:37:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:09,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-28 03:37:09,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 03:37:09,874 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 128 states, 128 states have (on average 3.265625) internal successors, (418), 128 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:10,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:10,667 INFO L93 Difference]: Finished difference Result 420 states and 422 transitions. [2024-11-28 03:37:10,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 03:37:10,668 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.265625) internal successors, (418), 128 states have internal predecessors, (418), 0 states have call successors, (0), 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 248 [2024-11-28 03:37:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:10,669 INFO L225 Difference]: With dead ends: 420 [2024-11-28 03:37:10,669 INFO L226 Difference]: Without dead ends: 252 [2024-11-28 03:37:10,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 372 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 03:37:10,670 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:10,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1052 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:37:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-28 03:37:10,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 251. [2024-11-28 03:37:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.008) internal successors, (252), 250 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2024-11-28 03:37:10,696 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 248 [2024-11-28 03:37:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:10,696 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2024-11-28 03:37:10,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.265625) internal successors, (418), 128 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2024-11-28 03:37:10,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-28 03:37:10,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:10,697 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:10,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-11-28 03:37:10,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:10,898 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:10,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -624629717, now seen corresponding path program 80 times [2024-11-28 03:37:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:10,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84756858] [2024-11-28 03:37:10,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:37:10,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:10,938 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:37:10,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4921 backedges. 1600 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84756858] [2024-11-28 03:37:12,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84756858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774881579] [2024-11-28 03:37:12,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:37:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:12,666 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:12,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-11-28 03:37:12,965 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:37:12,965 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:12,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-28 03:37:12,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4921 backedges. 1681 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:13,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4921 backedges. 1681 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774881579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:14,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:14,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 47 [2024-11-28 03:37:14,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773240618] [2024-11-28 03:37:14,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:14,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:37:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:14,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:37:14,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:37:14,969 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand has 47 states, 47 states have (on average 5.425531914893617) internal successors, (255), 47 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:15,847 INFO L93 Difference]: Finished difference Result 265 states and 266 transitions. [2024-11-28 03:37:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 03:37:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.425531914893617) internal successors, (255), 47 states have internal predecessors, (255), 0 states have call successors, (0), 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 250 [2024-11-28 03:37:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:15,849 INFO L225 Difference]: With dead ends: 265 [2024-11-28 03:37:15,849 INFO L226 Difference]: Without dead ends: 263 [2024-11-28 03:37:15,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 455 SyntacticMatches, 83 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3685 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2840, Invalid=4816, Unknown=0, NotChecked=0, Total=7656 [2024-11-28 03:37:15,849 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 10 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:15,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 395 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:37:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-28 03:37:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 255. [2024-11-28 03:37:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0078740157480315) internal successors, (256), 254 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-11-28 03:37:15,861 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 250 [2024-11-28 03:37:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:15,861 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-11-28 03:37:15,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.425531914893617) internal successors, (255), 47 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-11-28 03:37:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-28 03:37:15,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:15,862 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:15,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-11-28 03:37:16,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:16,062 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:16,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1453979598, now seen corresponding path program 81 times [2024-11-28 03:37:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968969735] [2024-11-28 03:37:16,063 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:37:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:16,133 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 03:37:16,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 3242 proven. 1842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968969735] [2024-11-28 03:37:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968969735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898491066] [2024-11-28 03:37:19,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:37:19,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:19,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:19,533 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:19,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-11-28 03:37:19,922 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-28 03:37:19,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:19,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-28 03:37:19,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 3403 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:23,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 3403 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898491066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:26,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-11-28 03:37:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079299795] [2024-11-28 03:37:26,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:26,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-28 03:37:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:26,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-28 03:37:26,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 03:37:26,044 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 131 states, 131 states have (on average 3.267175572519084) internal successors, (428), 131 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:26,745 INFO L93 Difference]: Finished difference Result 430 states and 432 transitions. [2024-11-28 03:37:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-28 03:37:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.267175572519084) internal successors, (428), 131 states have internal predecessors, (428), 0 states have call successors, (0), 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 254 [2024-11-28 03:37:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:26,747 INFO L225 Difference]: With dead ends: 430 [2024-11-28 03:37:26,747 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 03:37:26,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 381 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 03:37:26,748 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 1 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:26,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 739 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:37:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 03:37:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-28 03:37:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.0078125) internal successors, (258), 256 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2024-11-28 03:37:26,770 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 254 [2024-11-28 03:37:26,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:26,770 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2024-11-28 03:37:26,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.267175572519084) internal successors, (428), 131 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:26,771 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2024-11-28 03:37:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-28 03:37:26,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:26,772 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:26,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-11-28 03:37:26,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:26,972 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:26,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1108056458, now seen corresponding path program 82 times [2024-11-28 03:37:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850005654] [2024-11-28 03:37:26,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:37:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:27,017 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:37:27,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5167 backedges. 1764 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850005654] [2024-11-28 03:37:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850005654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430466973] [2024-11-28 03:37:28,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:37:28,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:28,850 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:28,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-11-28 03:37:29,193 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:37:29,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:29,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 03:37:29,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5167 backedges. 1764 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:29,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5167 backedges. 1764 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:31,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430466973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:31,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:31,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 47 [2024-11-28 03:37:31,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357354342] [2024-11-28 03:37:31,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:31,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:37:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:31,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:37:31,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=995, Invalid=1167, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:37:31,400 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 47 states, 47 states have (on average 5.48936170212766) internal successors, (258), 47 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:32,244 INFO L93 Difference]: Finished difference Result 271 states and 272 transitions. [2024-11-28 03:37:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-28 03:37:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.48936170212766) internal successors, (258), 47 states have internal predecessors, (258), 0 states have call successors, (0), 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 256 [2024-11-28 03:37:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:32,246 INFO L225 Difference]: With dead ends: 271 [2024-11-28 03:37:32,246 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 03:37:32,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 468 SyntacticMatches, 84 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3529 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2969, Invalid=4863, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 03:37:32,246 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:32,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 320 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:37:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 03:37:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 261. [2024-11-28 03:37:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0076923076923077) internal successors, (262), 260 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 262 transitions. [2024-11-28 03:37:32,269 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 262 transitions. Word has length 256 [2024-11-28 03:37:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:32,269 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 262 transitions. [2024-11-28 03:37:32,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.48936170212766) internal successors, (258), 47 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 262 transitions. [2024-11-28 03:37:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-28 03:37:32,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:32,271 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:32,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-11-28 03:37:32,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:32,472 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1354197245, now seen corresponding path program 83 times [2024-11-28 03:37:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109488565] [2024-11-28 03:37:32,472 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:37:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:32,579 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-11-28 03:37:32,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3570 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:36,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109488565] [2024-11-28 03:37:36,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109488565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:36,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408356156] [2024-11-28 03:37:36,264 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:37:36,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:36,266 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:36,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-11-28 03:37:36,692 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-11-28 03:37:36,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:36,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-28 03:37:36,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3570 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:40,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3570 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:43,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408356156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:43,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:43,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 132 [2024-11-28 03:37:43,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648627656] [2024-11-28 03:37:43,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:43,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-28 03:37:43,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:43,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-28 03:37:43,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3959, Invalid=13333, Unknown=0, NotChecked=0, Total=17292 [2024-11-28 03:37:43,240 INFO L87 Difference]: Start difference. First operand 261 states and 262 transitions. Second operand has 132 states, 132 states have (on average 3.257575757575758) internal successors, (430), 132 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:43,981 INFO L93 Difference]: Finished difference Result 440 states and 442 transitions. [2024-11-28 03:37:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-28 03:37:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.257575757575758) internal successors, (430), 132 states have internal predecessors, (430), 0 states have call successors, (0), 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 260 [2024-11-28 03:37:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:43,982 INFO L225 Difference]: With dead ends: 440 [2024-11-28 03:37:43,982 INFO L226 Difference]: Without dead ends: 264 [2024-11-28 03:37:43,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 391 SyntacticMatches, 86 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10921 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3959, Invalid=13333, Unknown=0, NotChecked=0, Total=17292 [2024-11-28 03:37:43,983 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:43,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 830 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:37:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-28 03:37:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2024-11-28 03:37:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 262 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-11-28 03:37:43,997 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 260 [2024-11-28 03:37:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:43,998 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-11-28 03:37:43,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.257575757575758) internal successors, (430), 132 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-11-28 03:37:43,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-28 03:37:43,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:43,999 INFO L218 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:44,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-11-28 03:37:44,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:44,199 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:44,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1916861375, now seen corresponding path program 84 times [2024-11-28 03:37:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260379381] [2024-11-28 03:37:44,200 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:37:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:44,260 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2024-11-28 03:37:44,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5419 backedges. 1764 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260379381] [2024-11-28 03:37:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260379381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842600743] [2024-11-28 03:37:46,221 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:37:46,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:46,225 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:46,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-11-28 03:37:46,646 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2024-11-28 03:37:46,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:37:46,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 03:37:46,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5419 backedges. 1849 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:46,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:37:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5419 backedges. 1849 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842600743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:37:48,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:37:48,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 49 [2024-11-28 03:37:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639996937] [2024-11-28 03:37:48,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:37:48,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:37:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:48,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:37:48,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:37:48,844 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 49 states, 49 states have (on average 5.448979591836735) internal successors, (267), 49 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:49,814 INFO L93 Difference]: Finished difference Result 277 states and 278 transitions. [2024-11-28 03:37:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-28 03:37:49,815 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.448979591836735) internal successors, (267), 49 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2024-11-28 03:37:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:49,816 INFO L225 Difference]: With dead ends: 277 [2024-11-28 03:37:49,816 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 03:37:49,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 478 SyntacticMatches, 86 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3107, Invalid=5265, Unknown=0, NotChecked=0, Total=8372 [2024-11-28 03:37:49,817 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:49,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 457 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:37:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 03:37:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 267. [2024-11-28 03:37:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0075187969924813) internal successors, (268), 266 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2024-11-28 03:37:49,842 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 262 [2024-11-28 03:37:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:49,842 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2024-11-28 03:37:49,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.448979591836735) internal successors, (267), 49 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:37:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2024-11-28 03:37:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-28 03:37:49,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:49,844 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:49,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-11-28 03:37:50,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:50,045 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:50,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash -619173560, now seen corresponding path program 85 times [2024-11-28 03:37:50,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223538317] [2024-11-28 03:37:50,045 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:50,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3572 proven. 2018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:53,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223538317] [2024-11-28 03:37:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223538317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995461978] [2024-11-28 03:37:53,927 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:37:53,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:53,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:53,929 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:53,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-11-28 03:37:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:54,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 03:37:54,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3741 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:37:58,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5590 backedges. 3741 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995461978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:01,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:01,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 137 [2024-11-28 03:38:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847804323] [2024-11-28 03:38:01,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:01,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-28 03:38:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:01,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-28 03:38:01,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-11-28 03:38:01,178 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand has 137 states, 137 states have (on average 3.27007299270073) internal successors, (448), 137 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:01,974 INFO L93 Difference]: Finished difference Result 450 states and 452 transitions. [2024-11-28 03:38:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-28 03:38:01,974 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.27007299270073) internal successors, (448), 137 states have internal predecessors, (448), 0 states have call successors, (0), 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 266 [2024-11-28 03:38:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:01,976 INFO L225 Difference]: With dead ends: 450 [2024-11-28 03:38:01,976 INFO L226 Difference]: Without dead ends: 270 [2024-11-28 03:38:01,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 399 SyntacticMatches, 87 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12169 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-11-28 03:38:01,978 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 1 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:01,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 862 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:38:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-28 03:38:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2024-11-28 03:38:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.007462686567164) internal successors, (270), 268 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 270 transitions. [2024-11-28 03:38:01,992 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 270 transitions. Word has length 266 [2024-11-28 03:38:01,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:01,992 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 270 transitions. [2024-11-28 03:38:01,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.27007299270073) internal successors, (448), 137 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 270 transitions. [2024-11-28 03:38:01,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-28 03:38:01,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:01,993 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:02,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:02,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:02,194 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:02,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:02,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1776763276, now seen corresponding path program 86 times [2024-11-28 03:38:02,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47616259] [2024-11-28 03:38:02,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:38:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:02,257 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:38:02,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5677 backedges. 1849 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:04,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47616259] [2024-11-28 03:38:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47616259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109779777] [2024-11-28 03:38:04,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:38:04,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:04,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:04,428 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:04,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-11-28 03:38:04,775 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:38:04,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:04,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-28 03:38:04,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5677 backedges. 1936 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:05,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5677 backedges. 1936 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109779777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:07,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:07,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 50 [2024-11-28 03:38:07,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100223841] [2024-11-28 03:38:07,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:07,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:38:07,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:07,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:38:07,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:38:07,125 INFO L87 Difference]: Start difference. First operand 269 states and 270 transitions. Second operand has 50 states, 50 states have (on average 5.46) internal successors, (273), 50 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:08,019 INFO L93 Difference]: Finished difference Result 283 states and 284 transitions. [2024-11-28 03:38:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-28 03:38:08,019 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.46) internal successors, (273), 50 states have internal predecessors, (273), 0 states have call successors, (0), 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 268 [2024-11-28 03:38:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:08,020 INFO L225 Difference]: With dead ends: 283 [2024-11-28 03:38:08,021 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 03:38:08,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 488 SyntacticMatches, 89 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4219 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3245, Invalid=5497, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 03:38:08,021 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:08,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 350 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:38:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 03:38:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 273. [2024-11-28 03:38:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 272 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 274 transitions. [2024-11-28 03:38:08,045 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 274 transitions. Word has length 268 [2024-11-28 03:38:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:08,045 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 274 transitions. [2024-11-28 03:38:08,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.46) internal successors, (273), 50 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 274 transitions. [2024-11-28 03:38:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-28 03:38:08,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:08,047 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:08,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-11-28 03:38:08,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:08,248 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:08,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1023751917, now seen corresponding path program 87 times [2024-11-28 03:38:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:08,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089126504] [2024-11-28 03:38:08,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:38:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:08,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-11-28 03:38:08,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 3743 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089126504] [2024-11-28 03:38:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089126504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068956398] [2024-11-28 03:38:12,434 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:38:12,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:12,436 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:12,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-11-28 03:38:12,898 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-11-28 03:38:12,898 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:12,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-28 03:38:12,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 3916 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:17,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 3916 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068956398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:20,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 140 [2024-11-28 03:38:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690625194] [2024-11-28 03:38:20,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:20,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-28 03:38:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:20,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-28 03:38:20,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 03:38:20,364 INFO L87 Difference]: Start difference. First operand 273 states and 274 transitions. Second operand has 140 states, 140 states have (on average 3.2714285714285714) internal successors, (458), 140 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:21,123 INFO L93 Difference]: Finished difference Result 460 states and 462 transitions. [2024-11-28 03:38:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-28 03:38:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.2714285714285714) internal successors, (458), 140 states have internal predecessors, (458), 0 states have call successors, (0), 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 272 [2024-11-28 03:38:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:21,125 INFO L225 Difference]: With dead ends: 460 [2024-11-28 03:38:21,125 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 03:38:21,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 408 SyntacticMatches, 89 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12716 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 03:38:21,126 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:21,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 812 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:38:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 03:38:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2024-11-28 03:38:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 274 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) [2024-11-28 03:38:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2024-11-28 03:38:21,145 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 272 [2024-11-28 03:38:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:21,145 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2024-11-28 03:38:21,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.2714285714285714) internal successors, (458), 140 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2024-11-28 03:38:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-28 03:38:21,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:21,147 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:21,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-11-28 03:38:21,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:21,348 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:21,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1564450391, now seen corresponding path program 88 times [2024-11-28 03:38:21,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:21,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97993173] [2024-11-28 03:38:21,348 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:38:21,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:21,411 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:38:21,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 2025 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97993173] [2024-11-28 03:38:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97993173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160242505] [2024-11-28 03:38:23,649 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:38:23,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:23,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:23,650 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:23,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-11-28 03:38:24,017 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:38:24,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:24,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 03:38:24,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 2025 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:24,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 2025 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160242505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:26,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:26,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-11-28 03:38:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646538070] [2024-11-28 03:38:26,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:26,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:38:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:26,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:38:26,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:38:26,446 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 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) [2024-11-28 03:38:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:27,428 INFO L93 Difference]: Finished difference Result 289 states and 290 transitions. [2024-11-28 03:38:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-28 03:38:27,428 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 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 274 [2024-11-28 03:38:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:27,430 INFO L225 Difference]: With dead ends: 289 [2024-11-28 03:38:27,430 INFO L226 Difference]: Without dead ends: 287 [2024-11-28 03:38:27,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 501 SyntacticMatches, 90 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4051 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3383, Invalid=5547, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 03:38:27,431 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 10 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:27,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 306 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:38:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-28 03:38:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2024-11-28 03:38:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.0071942446043165) internal successors, (280), 278 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-11-28 03:38:27,448 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2024-11-28 03:38:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:27,448 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-11-28 03:38:27,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 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) [2024-11-28 03:38:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-11-28 03:38:27,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-28 03:38:27,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:27,450 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:27,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-11-28 03:38:27,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-28 03:38:27,651 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:27,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:27,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1710344286, now seen corresponding path program 89 times [2024-11-28 03:38:27,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:27,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829298394] [2024-11-28 03:38:27,651 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:38:27,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:27,743 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-28 03:38:27,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6120 backedges. 4095 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829298394] [2024-11-28 03:38:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829298394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59751719] [2024-11-28 03:38:31,981 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:38:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:31,983 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:31,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-11-28 03:38:32,420 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-28 03:38:32,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:32,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-28 03:38:32,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6120 backedges. 4095 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:36,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6120 backedges. 4095 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:40,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59751719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:40,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:40,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 141 [2024-11-28 03:38:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310665529] [2024-11-28 03:38:40,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:40,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-11-28 03:38:40,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:40,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-11-28 03:38:40,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4511, Invalid=15229, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 03:38:40,070 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 141 states, 141 states have (on average 3.2624113475177303) internal successors, (460), 141 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:40,944 INFO L93 Difference]: Finished difference Result 470 states and 472 transitions. [2024-11-28 03:38:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-28 03:38:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 3.2624113475177303) internal successors, (460), 141 states have internal predecessors, (460), 0 states have call successors, (0), 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 278 [2024-11-28 03:38:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:40,946 INFO L225 Difference]: With dead ends: 470 [2024-11-28 03:38:40,946 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 03:38:40,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 418 SyntacticMatches, 92 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12511 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4511, Invalid=15229, Unknown=0, NotChecked=0, Total=19740 [2024-11-28 03:38:40,947 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 1 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:40,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 992 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:38:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 03:38:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 281. [2024-11-28 03:38:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 280 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 282 transitions. [2024-11-28 03:38:40,975 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 282 transitions. Word has length 278 [2024-11-28 03:38:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:40,975 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 282 transitions. [2024-11-28 03:38:40,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 3.2624113475177303) internal successors, (460), 141 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 282 transitions. [2024-11-28 03:38:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-28 03:38:40,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:40,977 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:40,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-11-28 03:38:41,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:41,182 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:41,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -643130718, now seen corresponding path program 90 times [2024-11-28 03:38:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522563258] [2024-11-28 03:38:41,182 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:38:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:41,253 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-11-28 03:38:41,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6211 backedges. 2025 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522563258] [2024-11-28 03:38:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522563258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843473973] [2024-11-28 03:38:43,757 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:38:43,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:43,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:43,758 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:43,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-11-28 03:38:44,251 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-11-28 03:38:44,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:38:44,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-28 03:38:44,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6211 backedges. 2116 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:44,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6211 backedges. 2116 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843473973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:46,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2024-11-28 03:38:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317239913] [2024-11-28 03:38:46,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:46,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 03:38:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:46,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 03:38:46,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:38:46,752 INFO L87 Difference]: Start difference. First operand 281 states and 282 transitions. Second operand has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:47,772 INFO L93 Difference]: Finished difference Result 295 states and 296 transitions. [2024-11-28 03:38:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 03:38:47,772 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 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 [2024-11-28 03:38:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:47,774 INFO L225 Difference]: With dead ends: 295 [2024-11-28 03:38:47,774 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 03:38:47,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 511 SyntacticMatches, 92 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4549 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3530, Invalid=5976, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 03:38:47,775 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:47,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 458 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:38:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 03:38:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 285. [2024-11-28 03:38:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.0070422535211268) internal successors, (286), 284 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 286 transitions. [2024-11-28 03:38:47,790 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 286 transitions. Word has length 280 [2024-11-28 03:38:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:47,790 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 286 transitions. [2024-11-28 03:38:47,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:38:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 286 transitions. [2024-11-28 03:38:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-28 03:38:47,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:47,791 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:47,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-11-28 03:38:47,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:47,992 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:47,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2137020631, now seen corresponding path program 91 times [2024-11-28 03:38:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:47,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406007469] [2024-11-28 03:38:47,992 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:38:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 4097 proven. 2297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406007469] [2024-11-28 03:38:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406007469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772032748] [2024-11-28 03:38:52,554 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:38:52,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:52,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:52,556 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:52,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-11-28 03:38:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:52,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 03:38:52,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 4278 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:57,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6394 backedges. 4278 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772032748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:00,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:00,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 146 [2024-11-28 03:39:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040833094] [2024-11-28 03:39:00,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:00,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-28 03:39:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:00,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-28 03:39:00,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 03:39:00,410 INFO L87 Difference]: Start difference. First operand 285 states and 286 transitions. Second operand has 146 states, 146 states have (on average 3.2739726027397262) internal successors, (478), 146 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:01,107 INFO L93 Difference]: Finished difference Result 480 states and 482 transitions. [2024-11-28 03:39:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-28 03:39:01,107 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.2739726027397262) internal successors, (478), 146 states have internal predecessors, (478), 0 states have call successors, (0), 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 284 [2024-11-28 03:39:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:01,108 INFO L225 Difference]: With dead ends: 480 [2024-11-28 03:39:01,108 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 03:39:01,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 426 SyntacticMatches, 93 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13846 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 03:39:01,110 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 1 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:01,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 763 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:39:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 03:39:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2024-11-28 03:39:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.006993006993007) internal successors, (288), 286 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-11-28 03:39:01,124 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 284 [2024-11-28 03:39:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:01,124 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-11-28 03:39:01,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.2739726027397262) internal successors, (478), 146 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-11-28 03:39:01,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-28 03:39:01,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:01,125 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:01,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-11-28 03:39:01,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:01,326 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:01,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash 874165869, now seen corresponding path program 92 times [2024-11-28 03:39:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426282573] [2024-11-28 03:39:01,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:39:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:01,378 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:39:01,378 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6487 backedges. 2116 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426282573] [2024-11-28 03:39:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426282573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171440574] [2024-11-28 03:39:03,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:39:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:03,624 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:03,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-11-28 03:39:03,990 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:39:03,990 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:03,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-28 03:39:03,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6487 backedges. 2209 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:04,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6487 backedges. 2209 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171440574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:06,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 53 [2024-11-28 03:39:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576916341] [2024-11-28 03:39:06,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:06,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:39:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:06,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:39:06,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:39:06,497 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 53 states, 53 states have (on average 5.490566037735849) internal successors, (291), 53 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:07,548 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2024-11-28 03:39:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-28 03:39:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.490566037735849) internal successors, (291), 53 states have internal predecessors, (291), 0 states have call successors, (0), 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 286 [2024-11-28 03:39:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:07,550 INFO L225 Difference]: With dead ends: 301 [2024-11-28 03:39:07,550 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 03:39:07,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 521 SyntacticMatches, 95 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3677, Invalid=6223, Unknown=0, NotChecked=0, Total=9900 [2024-11-28 03:39:07,550 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 8 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:07,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 434 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:39:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 03:39:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2024-11-28 03:39:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.006896551724138) internal successors, (292), 290 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2024-11-28 03:39:07,566 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 286 [2024-11-28 03:39:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:07,566 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2024-11-28 03:39:07,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.490566037735849) internal successors, (291), 53 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2024-11-28 03:39:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-28 03:39:07,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:07,567 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:07,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-11-28 03:39:07,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:07,768 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:07,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1430854284, now seen corresponding path program 93 times [2024-11-28 03:39:07,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:07,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462217837] [2024-11-28 03:39:07,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:39:07,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:07,827 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-11-28 03:39:07,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4280 proven. 2394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:12,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462217837] [2024-11-28 03:39:12,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462217837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:12,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748461399] [2024-11-28 03:39:12,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:39:12,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:12,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:12,274 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:12,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-28 03:39:12,767 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-11-28 03:39:12,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:12,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-28 03:39:12,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4465 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:17,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6674 backedges. 4465 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748461399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:20,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:20,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 149 [2024-11-28 03:39:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607580793] [2024-11-28 03:39:20,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:20,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-28 03:39:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:20,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-28 03:39:20,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-11-28 03:39:20,474 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand has 149 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:21,510 INFO L93 Difference]: Finished difference Result 490 states and 492 transitions. [2024-11-28 03:39:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-28 03:39:21,511 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 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 290 [2024-11-28 03:39:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:21,512 INFO L225 Difference]: With dead ends: 490 [2024-11-28 03:39:21,512 INFO L226 Difference]: Without dead ends: 294 [2024-11-28 03:39:21,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 435 SyntacticMatches, 95 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-11-28 03:39:21,513 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 1 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:21,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1186 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:39:21,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-28 03:39:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2024-11-28 03:39:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 292 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 294 transitions. [2024-11-28 03:39:21,538 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 294 transitions. Word has length 290 [2024-11-28 03:39:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:21,538 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 294 transitions. [2024-11-28 03:39:21,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 294 transitions. [2024-11-28 03:39:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-28 03:39:21,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:21,540 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:21,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-11-28 03:39:21,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:21,741 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:21,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 546468280, now seen corresponding path program 94 times [2024-11-28 03:39:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444097129] [2024-11-28 03:39:21,741 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:39:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:21,800 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:39:21,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6769 backedges. 2304 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:24,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444097129] [2024-11-28 03:39:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444097129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086224663] [2024-11-28 03:39:24,183 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:39:24,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:24,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:24,184 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:24,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-11-28 03:39:24,573 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:39:24,573 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:24,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 03:39:24,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6769 backedges. 2304 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:24,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6769 backedges. 2304 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086224663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:27,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 53 [2024-11-28 03:39:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382171746] [2024-11-28 03:39:27,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:27,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 03:39:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:27,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 03:39:27,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=1476, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:39:27,256 INFO L87 Difference]: Start difference. First operand 293 states and 294 transitions. Second operand has 53 states, 53 states have (on average 5.547169811320755) internal successors, (294), 53 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:28,326 INFO L93 Difference]: Finished difference Result 307 states and 308 transitions. [2024-11-28 03:39:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-28 03:39:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.547169811320755) internal successors, (294), 53 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2024-11-28 03:39:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:28,327 INFO L225 Difference]: With dead ends: 307 [2024-11-28 03:39:28,327 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 03:39:28,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 533 SyntacticMatches, 97 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4657 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3824, Invalid=6276, Unknown=0, NotChecked=0, Total=10100 [2024-11-28 03:39:28,328 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 8 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:28,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:39:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 03:39:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 297. [2024-11-28 03:39:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0067567567567568) internal successors, (298), 296 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2024-11-28 03:39:28,346 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 292 [2024-11-28 03:39:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:28,346 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2024-11-28 03:39:28,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.547169811320755) internal successors, (294), 53 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2024-11-28 03:39:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-28 03:39:28,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:28,348 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:28,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-11-28 03:39:28,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:28,548 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:28,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash -755367105, now seen corresponding path program 95 times [2024-11-28 03:39:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026248004] [2024-11-28 03:39:28,549 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:39:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:28,631 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-28 03:39:28,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4656 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:33,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:33,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026248004] [2024-11-28 03:39:33,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026248004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:33,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187847705] [2024-11-28 03:39:33,349 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:39:33,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:33,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:33,351 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:33,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-11-28 03:39:33,879 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-28 03:39:33,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:33,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 03:39:33,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4656 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:38,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4656 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:41,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187847705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:41,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:41,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 150 [2024-11-28 03:39:41,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594614131] [2024-11-28 03:39:41,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:41,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2024-11-28 03:39:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:41,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2024-11-28 03:39:41,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5099, Invalid=17251, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 03:39:41,986 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand has 150 states, 150 states have (on average 3.2666666666666666) internal successors, (490), 150 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:42,844 INFO L93 Difference]: Finished difference Result 500 states and 502 transitions. [2024-11-28 03:39:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-28 03:39:42,844 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 3.2666666666666666) internal successors, (490), 150 states have internal predecessors, (490), 0 states have call successors, (0), 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 296 [2024-11-28 03:39:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:42,846 INFO L225 Difference]: With dead ends: 500 [2024-11-28 03:39:42,846 INFO L226 Difference]: Without dead ends: 300 [2024-11-28 03:39:42,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 445 SyntacticMatches, 98 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14209 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=5099, Invalid=17251, Unknown=0, NotChecked=0, Total=22350 [2024-11-28 03:39:42,847 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 1 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:42,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 826 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:39:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-28 03:39:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2024-11-28 03:39:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 298 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2024-11-28 03:39:42,864 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 296 [2024-11-28 03:39:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:42,864 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2024-11-28 03:39:42,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 3.2666666666666666) internal successors, (490), 150 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2024-11-28 03:39:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-28 03:39:42,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:42,865 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:42,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-11-28 03:39:43,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:43,066 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:43,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:43,066 INFO L85 PathProgramCache]: Analyzing trace with hash 774130819, now seen corresponding path program 96 times [2024-11-28 03:39:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548547914] [2024-11-28 03:39:43,066 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:39:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:43,136 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2024-11-28 03:39:43,136 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2304 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:45,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:45,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548547914] [2024-11-28 03:39:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548547914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336132476] [2024-11-28 03:39:45,697 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:39:45,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:45,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:45,698 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:45,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-28 03:39:46,189 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2024-11-28 03:39:46,189 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:39:46,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-28 03:39:46,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2401 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:46,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2401 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336132476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:48,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 55 [2024-11-28 03:39:48,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134729168] [2024-11-28 03:39:48,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:48,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 03:39:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:48,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 03:39:48,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 03:39:48,832 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand has 55 states, 55 states have (on average 5.509090909090909) internal successors, (303), 55 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:50,044 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2024-11-28 03:39:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-28 03:39:50,044 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.509090909090909) internal successors, (303), 55 states have internal predecessors, (303), 0 states have call successors, (0), 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 298 [2024-11-28 03:39:50,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:50,047 INFO L225 Difference]: With dead ends: 313 [2024-11-28 03:39:50,047 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 03:39:50,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 544 SyntacticMatches, 98 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5140 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3980, Invalid=6732, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 03:39:50,048 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:50,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 415 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:39:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 03:39:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 303. [2024-11-28 03:39:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 302 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-11-28 03:39:50,083 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 298 [2024-11-28 03:39:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:50,083 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-11-28 03:39:50,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.509090909090909) internal successors, (303), 55 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:39:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-11-28 03:39:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 03:39:50,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:50,085 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:50,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-11-28 03:39:50,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:50,286 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:50,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1153728374, now seen corresponding path program 97 times [2024-11-28 03:39:50,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185294454] [2024-11-28 03:39:50,286 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:39:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7252 backedges. 4658 proven. 2594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185294454] [2024-11-28 03:39:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185294454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298974673] [2024-11-28 03:39:55,355 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:39:55,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:55,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:55,357 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:55,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-11-28 03:39:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:55,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-28 03:39:55,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7252 backedges. 4851 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:00,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7252 backedges. 4851 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298974673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:04,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 155 [2024-11-28 03:40:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911081661] [2024-11-28 03:40:04,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2024-11-28 03:40:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:04,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2024-11-28 03:40:04,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5360, Invalid=18510, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 03:40:04,123 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 155 states, 155 states have (on average 3.2774193548387096) internal successors, (508), 155 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:04,939 INFO L93 Difference]: Finished difference Result 510 states and 512 transitions. [2024-11-28 03:40:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-28 03:40:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.2774193548387096) internal successors, (508), 155 states have internal predecessors, (508), 0 states have call successors, (0), 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 302 [2024-11-28 03:40:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:04,941 INFO L225 Difference]: With dead ends: 510 [2024-11-28 03:40:04,941 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 03:40:04,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 453 SyntacticMatches, 99 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15631 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=5360, Invalid=18510, Unknown=0, NotChecked=0, Total=23870 [2024-11-28 03:40:04,942 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:04,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 904 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 03:40:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2024-11-28 03:40:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.006578947368421) internal successors, (306), 304 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) [2024-11-28 03:40:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2024-11-28 03:40:04,959 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 302 [2024-11-28 03:40:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:04,959 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2024-11-28 03:40:04,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.2774193548387096) internal successors, (508), 155 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2024-11-28 03:40:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-28 03:40:04,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:04,961 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:04,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-11-28 03:40:05,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-11-28 03:40:05,161 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:05,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1123206862, now seen corresponding path program 98 times [2024-11-28 03:40:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:05,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039978189] [2024-11-28 03:40:05,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:05,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:05,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7351 backedges. 2401 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039978189] [2024-11-28 03:40:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039978189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314059592] [2024-11-28 03:40:07,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:07,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:07,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:07,809 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:07,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-11-28 03:40:08,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:08,222 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:08,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-28 03:40:08,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7351 backedges. 2500 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:08,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7351 backedges. 2500 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:11,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314059592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:11,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 56 [2024-11-28 03:40:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584183573] [2024-11-28 03:40:11,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:11,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 03:40:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:11,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 03:40:11,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1386, Invalid=1694, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:40:11,004 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand has 56 states, 56 states have (on average 5.517857142857143) internal successors, (309), 56 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:12,167 INFO L93 Difference]: Finished difference Result 319 states and 320 transitions. [2024-11-28 03:40:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-28 03:40:12,168 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.517857142857143) internal successors, (309), 56 states have internal predecessors, (309), 0 states have call successors, (0), 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 304 [2024-11-28 03:40:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:12,169 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:40:12,169 INFO L226 Difference]: Without dead ends: 317 [2024-11-28 03:40:12,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 554 SyntacticMatches, 101 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5395 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4136, Invalid=6994, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 03:40:12,170 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:12,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 395 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:40:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-28 03:40:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2024-11-28 03:40:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.0064935064935066) internal successors, (310), 308 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 310 transitions. [2024-11-28 03:40:12,194 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 310 transitions. Word has length 304 [2024-11-28 03:40:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:12,194 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 310 transitions. [2024-11-28 03:40:12,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.517857142857143) internal successors, (309), 56 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:12,194 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 310 transitions. [2024-11-28 03:40:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-28 03:40:12,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:12,195 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:12,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-11-28 03:40:12,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:12,396 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:12,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1952308565, now seen corresponding path program 99 times [2024-11-28 03:40:12,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:12,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781312390] [2024-11-28 03:40:12,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:12,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:12,468 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-11-28 03:40:12,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4853 proven. 2697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781312390] [2024-11-28 03:40:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781312390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122523629] [2024-11-28 03:40:17,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:40:17,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:17,579 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:17,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-28 03:40:18,119 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-11-28 03:40:18,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:18,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-28 03:40:18,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 5050 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:22,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 5050 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122523629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:26,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:26,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 158 [2024-11-28 03:40:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698870586] [2024-11-28 03:40:26,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:26,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-11-28 03:40:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:26,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-11-28 03:40:26,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5569, Invalid=19237, Unknown=0, NotChecked=0, Total=24806 [2024-11-28 03:40:26,818 INFO L87 Difference]: Start difference. First operand 309 states and 310 transitions. Second operand has 158 states, 158 states have (on average 3.278481012658228) internal successors, (518), 158 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:27,868 INFO L93 Difference]: Finished difference Result 520 states and 522 transitions. [2024-11-28 03:40:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-28 03:40:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 3.278481012658228) internal successors, (518), 158 states have internal predecessors, (518), 0 states have call successors, (0), 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 308 [2024-11-28 03:40:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:27,870 INFO L225 Difference]: With dead ends: 520 [2024-11-28 03:40:27,870 INFO L226 Difference]: Without dead ends: 312 [2024-11-28 03:40:27,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 462 SyntacticMatches, 101 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16250 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=5569, Invalid=19237, Unknown=0, NotChecked=0, Total=24806 [2024-11-28 03:40:27,871 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 1 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:27,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:40:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-28 03:40:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2024-11-28 03:40:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 310 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-11-28 03:40:27,895 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 308 [2024-11-28 03:40:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:27,895 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-11-28 03:40:27,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 3.278481012658228) internal successors, (518), 158 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-11-28 03:40:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-28 03:40:27,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:27,896 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:27,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:28,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-11-28 03:40:28,097 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:28,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash 405823641, now seen corresponding path program 100 times [2024-11-28 03:40:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:28,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319183746] [2024-11-28 03:40:28,097 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:28,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:28,158 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:28,158 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7651 backedges. 2601 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319183746] [2024-11-28 03:40:30,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319183746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785668938] [2024-11-28 03:40:30,897 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:40:30,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:30,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:30,899 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:30,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-11-28 03:40:31,334 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:40:31,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:31,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-28 03:40:31,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7651 backedges. 2601 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:31,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7651 backedges. 2601 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785668938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:34,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-11-28 03:40:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455290632] [2024-11-28 03:40:34,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:34,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 03:40:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:34,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 03:40:34,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1436, Invalid=1644, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:40:34,263 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 56 states, 56 states have (on average 5.571428571428571) internal successors, (312), 56 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:35,437 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2024-11-28 03:40:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-28 03:40:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.571428571428571) internal successors, (312), 56 states have internal predecessors, (312), 0 states have call successors, (0), 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 310 [2024-11-28 03:40:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:35,438 INFO L225 Difference]: With dead ends: 325 [2024-11-28 03:40:35,438 INFO L226 Difference]: Without dead ends: 323 [2024-11-28 03:40:35,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 567 SyntacticMatches, 102 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5203 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4292, Invalid=7050, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 03:40:35,439 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:35,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:40:35,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-28 03:40:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 315. [2024-11-28 03:40:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0063694267515924) internal successors, (316), 314 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2024-11-28 03:40:35,457 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 310 [2024-11-28 03:40:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:35,457 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2024-11-28 03:40:35,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.571428571428571) internal successors, (312), 56 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2024-11-28 03:40:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-28 03:40:35,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:35,458 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:35,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-11-28 03:40:35,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-28 03:40:35,658 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:35,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash -632055392, now seen corresponding path program 101 times [2024-11-28 03:40:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661574940] [2024-11-28 03:40:35,659 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:40:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:35,760 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-11-28 03:40:35,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7854 backedges. 5253 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:41,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:41,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661574940] [2024-11-28 03:40:41,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661574940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:41,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709387919] [2024-11-28 03:40:41,144 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:40:41,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:41,146 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:41,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-11-28 03:40:41,703 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-11-28 03:40:41,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:41,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-28 03:40:41,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7854 backedges. 5253 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:46,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7854 backedges. 5253 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:50,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709387919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:50,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 159 [2024-11-28 03:40:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326052154] [2024-11-28 03:40:50,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:50,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2024-11-28 03:40:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:50,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2024-11-28 03:40:50,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5723, Invalid=19399, Unknown=0, NotChecked=0, Total=25122 [2024-11-28 03:40:50,621 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand has 159 states, 159 states have (on average 3.270440251572327) internal successors, (520), 159 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:51,579 INFO L93 Difference]: Finished difference Result 530 states and 532 transitions. [2024-11-28 03:40:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-28 03:40:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 3.270440251572327) internal successors, (520), 159 states have internal predecessors, (520), 0 states have call successors, (0), 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 314 [2024-11-28 03:40:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:51,581 INFO L225 Difference]: With dead ends: 530 [2024-11-28 03:40:51,581 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 03:40:51,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 472 SyntacticMatches, 104 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16015 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=5723, Invalid=19399, Unknown=0, NotChecked=0, Total=25122 [2024-11-28 03:40:51,582 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 1 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:51,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 952 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:40:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 03:40:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2024-11-28 03:40:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 316 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 318 transitions. [2024-11-28 03:40:51,600 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 318 transitions. Word has length 314 [2024-11-28 03:40:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:51,601 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 318 transitions. [2024-11-28 03:40:51,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 3.270440251572327) internal successors, (520), 159 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 318 transitions. [2024-11-28 03:40:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-28 03:40:51,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:51,602 INFO L218 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:51,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-11-28 03:40:51,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-28 03:40:51,802 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:51,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1239442972, now seen corresponding path program 102 times [2024-11-28 03:40:51,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:51,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237840908] [2024-11-28 03:40:51,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:40:51,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:51,891 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2024-11-28 03:40:51,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 2601 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:54,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237840908] [2024-11-28 03:40:54,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237840908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:54,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598282545] [2024-11-28 03:40:54,822 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:40:54,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:54,824 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:54,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-11-28 03:40:55,385 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2024-11-28 03:40:55,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:55,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 03:40:55,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 2704 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:55,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7957 backedges. 2704 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598282545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:58,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 58 [2024-11-28 03:40:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430105370] [2024-11-28 03:40:58,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:58,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 03:40:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:58,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 03:40:58,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=1813, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:40:58,529 INFO L87 Difference]: Start difference. First operand 317 states and 318 transitions. Second operand has 58 states, 58 states have (on average 5.5344827586206895) internal successors, (321), 58 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) [2024-11-28 03:40:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:59,723 INFO L93 Difference]: Finished difference Result 331 states and 332 transitions. [2024-11-28 03:40:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-28 03:40:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.5344827586206895) internal successors, (321), 58 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 316 [2024-11-28 03:40:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:59,725 INFO L225 Difference]: With dead ends: 331 [2024-11-28 03:40:59,725 INFO L226 Difference]: Without dead ends: 329 [2024-11-28 03:40:59,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 577 SyntacticMatches, 104 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4457, Invalid=7533, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 03:40:59,726 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 8 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:59,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 451 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:40:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-28 03:40:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 321. [2024-11-28 03:40:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.00625) internal successors, (322), 320 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) [2024-11-28 03:40:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2024-11-28 03:40:59,756 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 316 [2024-11-28 03:40:59,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:59,757 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2024-11-28 03:40:59,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.5344827586206895) internal successors, (321), 58 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) [2024-11-28 03:40:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2024-11-28 03:40:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-28 03:40:59,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:59,758 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:59,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2024-11-28 03:40:59,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-28 03:40:59,958 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:59,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:59,958 INFO L85 PathProgramCache]: Analyzing trace with hash 270480747, now seen corresponding path program 103 times [2024-11-28 03:40:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:59,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267252007] [2024-11-28 03:40:59,959 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:40:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5255 proven. 2909 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267252007] [2024-11-28 03:41:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267252007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649535634] [2024-11-28 03:41:05,565 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:41:05,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:05,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:05,566 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:05,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-11-28 03:41:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:06,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-28 03:41:06,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5460 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:11,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5460 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:15,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649535634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:15,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:15,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109, 109] total 164 [2024-11-28 03:41:15,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045153568] [2024-11-28 03:41:15,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:15,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2024-11-28 03:41:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:15,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2024-11-28 03:41:15,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5999, Invalid=20733, Unknown=0, NotChecked=0, Total=26732 [2024-11-28 03:41:15,296 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand has 164 states, 164 states have (on average 3.2804878048780486) internal successors, (538), 164 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:16,429 INFO L93 Difference]: Finished difference Result 540 states and 542 transitions. [2024-11-28 03:41:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-28 03:41:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.2804878048780486) internal successors, (538), 164 states have internal predecessors, (538), 0 states have call successors, (0), 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 320 [2024-11-28 03:41:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:16,431 INFO L225 Difference]: With dead ends: 540 [2024-11-28 03:41:16,431 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 03:41:16,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 480 SyntacticMatches, 105 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17524 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=5999, Invalid=20733, Unknown=0, NotChecked=0, Total=26732 [2024-11-28 03:41:16,432 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 1 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:16,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1264 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:41:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 03:41:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2024-11-28 03:41:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 322 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2024-11-28 03:41:16,452 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 320 [2024-11-28 03:41:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:16,452 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2024-11-28 03:41:16,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.2804878048780486) internal successors, (538), 164 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2024-11-28 03:41:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-28 03:41:16,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:16,453 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:16,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-11-28 03:41:16,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2024-11-28 03:41:16,653 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:16,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash -267193681, now seen corresponding path program 104 times [2024-11-28 03:41:16,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:16,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212016697] [2024-11-28 03:41:16,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:16,727 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:41:16,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8269 backedges. 2704 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:19,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212016697] [2024-11-28 03:41:19,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212016697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:19,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619955607] [2024-11-28 03:41:19,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:19,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:19,649 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:19,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-11-28 03:41:20,099 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:41:20,099 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:20,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-28 03:41:20,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8269 backedges. 2809 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:20,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8269 backedges. 2809 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619955607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:23,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 59 [2024-11-28 03:41:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37750975] [2024-11-28 03:41:23,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:23,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 03:41:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:23,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 03:41:23,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=1874, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:41:23,211 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:24,490 INFO L93 Difference]: Finished difference Result 337 states and 338 transitions. [2024-11-28 03:41:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-28 03:41:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 states have internal predecessors, (327), 0 states have call successors, (0), 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 322 [2024-11-28 03:41:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:24,492 INFO L225 Difference]: With dead ends: 337 [2024-11-28 03:41:24,492 INFO L226 Difference]: Without dead ends: 335 [2024-11-28 03:41:24,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 587 SyntacticMatches, 107 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6037 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4622, Invalid=7810, Unknown=0, NotChecked=0, Total=12432 [2024-11-28 03:41:24,492 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 10 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:24,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 500 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:41:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-28 03:41:24,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 327. [2024-11-28 03:41:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.0061349693251533) internal successors, (328), 326 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-11-28 03:41:24,511 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 322 [2024-11-28 03:41:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:24,511 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-11-28 03:41:24,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-11-28 03:41:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-28 03:41:24,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:24,512 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:24,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-11-28 03:41:24,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:24,712 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:24,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:24,713 INFO L85 PathProgramCache]: Analyzing trace with hash -70045514, now seen corresponding path program 105 times [2024-11-28 03:41:24,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:24,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55234915] [2024-11-28 03:41:24,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:41:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:24,783 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2024-11-28 03:41:24,783 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5462 proven. 3018 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55234915] [2024-11-28 03:41:30,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55234915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001854976] [2024-11-28 03:41:30,372 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:41:30,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:30,373 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:30,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-11-28 03:41:30,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2024-11-28 03:41:30,942 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:30,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 03:41:30,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5671 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:36,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8480 backedges. 5671 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001854976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:40,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111, 111] total 167 [2024-11-28 03:41:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986178181] [2024-11-28 03:41:40,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:40,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2024-11-28 03:41:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:40,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2024-11-28 03:41:40,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6220, Invalid=21502, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 03:41:40,836 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 167 states, 167 states have (on average 3.281437125748503) internal successors, (548), 167 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:42,129 INFO L93 Difference]: Finished difference Result 550 states and 552 transitions. [2024-11-28 03:41:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 03:41:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 3.281437125748503) internal successors, (548), 167 states have internal predecessors, (548), 0 states have call successors, (0), 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 326 [2024-11-28 03:41:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:42,131 INFO L225 Difference]: With dead ends: 550 [2024-11-28 03:41:42,131 INFO L226 Difference]: Without dead ends: 330 [2024-11-28 03:41:42,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 489 SyntacticMatches, 107 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18179 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=6220, Invalid=21502, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 03:41:42,133 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 1 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:42,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1347 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:41:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-28 03:41:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2024-11-28 03:41:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 328 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2024-11-28 03:41:42,156 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 326 [2024-11-28 03:41:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:42,156 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2024-11-28 03:41:42,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 3.281437125748503) internal successors, (548), 167 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2024-11-28 03:41:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-28 03:41:42,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:42,158 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:42,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-11-28 03:41:42,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-11-28 03:41:42,358 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:42,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:42,358 INFO L85 PathProgramCache]: Analyzing trace with hash -529732870, now seen corresponding path program 106 times [2024-11-28 03:41:42,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:42,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706743917] [2024-11-28 03:41:42,359 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:41:42,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:42,443 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:41:42,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8587 backedges. 2916 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706743917] [2024-11-28 03:41:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706743917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336029772] [2024-11-28 03:41:45,963 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:41:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:45,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:45,965 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-11-28 03:41:46,442 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:41:46,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:46,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 03:41:46,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8587 backedges. 2916 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:46,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8587 backedges. 2916 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:49,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336029772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:49,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:49,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 59 [2024-11-28 03:41:49,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979105950] [2024-11-28 03:41:49,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:49,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 03:41:49,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:49,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 03:41:49,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=1821, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:41:49,566 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand has 59 states, 59 states have (on average 5.593220338983051) internal successors, (330), 59 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:50,805 INFO L93 Difference]: Finished difference Result 343 states and 344 transitions. [2024-11-28 03:41:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-28 03:41:50,806 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.593220338983051) internal successors, (330), 59 states have internal predecessors, (330), 0 states have call successors, (0), 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 328 [2024-11-28 03:41:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:50,807 INFO L225 Difference]: With dead ends: 343 [2024-11-28 03:41:50,807 INFO L226 Difference]: Without dead ends: 341 [2024-11-28 03:41:50,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 600 SyntacticMatches, 108 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5833 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4787, Invalid=7869, Unknown=0, NotChecked=0, Total=12656 [2024-11-28 03:41:50,808 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 8 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:50,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 417 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:41:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-28 03:41:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 333. [2024-11-28 03:41:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 332 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 334 transitions. [2024-11-28 03:41:50,843 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 334 transitions. Word has length 328 [2024-11-28 03:41:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:50,844 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 334 transitions. [2024-11-28 03:41:50,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.593220338983051) internal successors, (330), 59 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 334 transitions. [2024-11-28 03:41:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-28 03:41:50,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:50,845 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:50,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2024-11-28 03:41:51,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2024-11-28 03:41:51,045 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:51,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1030616191, now seen corresponding path program 107 times [2024-11-28 03:41:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:51,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111113531] [2024-11-28 03:41:51,046 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:41:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:51,150 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2024-11-28 03:41:51,150 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 5886 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:57,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111113531] [2024-11-28 03:41:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111113531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774524862] [2024-11-28 03:41:57,619 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:41:57,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:57,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:57,620 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:57,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-11-28 03:41:58,218 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2024-11-28 03:41:58,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:58,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 03:41:58,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 5886 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:04,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 5886 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774524862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:08,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 168 [2024-11-28 03:42:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19832462] [2024-11-28 03:42:08,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:08,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2024-11-28 03:42:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:08,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2024-11-28 03:42:08,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6383, Invalid=21673, Unknown=0, NotChecked=0, Total=28056 [2024-11-28 03:42:08,734 INFO L87 Difference]: Start difference. First operand 333 states and 334 transitions. Second operand has 168 states, 168 states have (on average 3.2738095238095237) internal successors, (550), 168 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:09,786 INFO L93 Difference]: Finished difference Result 560 states and 562 transitions. [2024-11-28 03:42:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-28 03:42:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 3.2738095238095237) internal successors, (550), 168 states have internal predecessors, (550), 0 states have call successors, (0), 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 332 [2024-11-28 03:42:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:09,788 INFO L225 Difference]: With dead ends: 560 [2024-11-28 03:42:09,788 INFO L226 Difference]: Without dead ends: 336 [2024-11-28 03:42:09,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 499 SyntacticMatches, 110 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17929 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=6383, Invalid=21673, Unknown=0, NotChecked=0, Total=28056 [2024-11-28 03:42:09,790 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 1 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:09,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1041 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:42:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-28 03:42:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 335. [2024-11-28 03:42:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.0059880239520957) internal successors, (336), 334 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) [2024-11-28 03:42:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-11-28 03:42:09,810 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 332 [2024-11-28 03:42:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:09,810 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-11-28 03:42:09,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 3.2738095238095237) internal successors, (550), 168 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-11-28 03:42:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-28 03:42:09,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:09,812 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:09,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2024-11-28 03:42:10,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:10,012 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:10,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1688208069, now seen corresponding path program 108 times [2024-11-28 03:42:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:10,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171594003] [2024-11-28 03:42:10,013 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:10,094 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2024-11-28 03:42:10,094 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 2916 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:13,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171594003] [2024-11-28 03:42:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171594003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:13,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969021681] [2024-11-28 03:42:13,431 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:13,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:13,435 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:13,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-11-28 03:42:14,167 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2024-11-28 03:42:14,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:14,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 03:42:14,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 3025 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:14,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 3025 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969021681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:17,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 61 [2024-11-28 03:42:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759335522] [2024-11-28 03:42:17,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:17,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 03:42:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:17,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 03:42:17,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1661, Invalid=1999, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 03:42:17,989 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 61 states, 61 states have (on average 5.557377049180328) internal successors, (339), 61 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) [2024-11-28 03:42:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:19,618 INFO L93 Difference]: Finished difference Result 349 states and 350 transitions. [2024-11-28 03:42:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-28 03:42:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.557377049180328) internal successors, (339), 61 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 334 [2024-11-28 03:42:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:19,620 INFO L225 Difference]: With dead ends: 349 [2024-11-28 03:42:19,620 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 03:42:19,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 610 SyntacticMatches, 110 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6430 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4961, Invalid=8379, Unknown=0, NotChecked=0, Total=13340 [2024-11-28 03:42:19,621 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 8 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:19,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 464 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:42:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 03:42:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2024-11-28 03:42:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0059171597633136) internal successors, (340), 338 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2024-11-28 03:42:19,658 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2024-11-28 03:42:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:19,658 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2024-11-28 03:42:19,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.557377049180328) internal successors, (339), 61 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) [2024-11-28 03:42:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2024-11-28 03:42:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-28 03:42:19,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:19,659 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:19,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:19,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2024-11-28 03:42:19,860 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:19,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1150174668, now seen corresponding path program 109 times [2024-11-28 03:42:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565427218] [2024-11-28 03:42:19,861 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9130 backedges. 5888 proven. 3242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565427218] [2024-11-28 03:42:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565427218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680244894] [2024-11-28 03:42:27,248 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:27,250 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:27,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-11-28 03:42:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:27,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 03:42:27,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9130 backedges. 6105 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:33,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9130 backedges. 6105 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680244894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:38,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:38,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115, 115] total 173 [2024-11-28 03:42:38,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370743965] [2024-11-28 03:42:38,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:38,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-28 03:42:38,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:38,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-28 03:42:38,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=23082, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 03:42:38,271 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand has 173 states, 173 states have (on average 3.2832369942196533) internal successors, (568), 173 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:39,646 INFO L93 Difference]: Finished difference Result 570 states and 572 transitions. [2024-11-28 03:42:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-28 03:42:39,646 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 3.2832369942196533) internal successors, (568), 173 states have internal predecessors, (568), 0 states have call successors, (0), 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 338 [2024-11-28 03:42:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:39,648 INFO L225 Difference]: With dead ends: 570 [2024-11-28 03:42:39,648 INFO L226 Difference]: Without dead ends: 342 [2024-11-28 03:42:39,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 507 SyntacticMatches, 111 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19525 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=6674, Invalid=23082, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 03:42:39,649 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 1 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:39,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1621 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:42:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-28 03:42:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2024-11-28 03:42:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.0058823529411764) internal successors, (342), 340 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 342 transitions. [2024-11-28 03:42:39,668 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 342 transitions. Word has length 338 [2024-11-28 03:42:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:39,668 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 342 transitions. [2024-11-28 03:42:39,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 3.2832369942196533) internal successors, (568), 173 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 342 transitions. [2024-11-28 03:42:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-28 03:42:39,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:39,669 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:39,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-11-28 03:42:39,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:39,869 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:39,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:39,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1724990960, now seen corresponding path program 110 times [2024-11-28 03:42:39,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:39,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415758551] [2024-11-28 03:42:39,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:39,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:39,942 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 3025 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415758551] [2024-11-28 03:42:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415758551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193376434] [2024-11-28 03:42:43,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:43,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:43,347 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-11-28 03:42:43,840 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:43,840 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:43,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-28 03:42:43,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 3136 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:44,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9241 backedges. 3136 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193376434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:47,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 62 [2024-11-28 03:42:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680520351] [2024-11-28 03:42:47,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:47,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 03:42:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:47,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 03:42:47,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1719, Invalid=2063, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:42:47,211 INFO L87 Difference]: Start difference. First operand 341 states and 342 transitions. Second operand has 62 states, 62 states have (on average 5.564516129032258) internal successors, (345), 62 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:48,662 INFO L93 Difference]: Finished difference Result 355 states and 356 transitions. [2024-11-28 03:42:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-28 03:42:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.564516129032258) internal successors, (345), 62 states have internal predecessors, (345), 0 states have call successors, (0), 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 340 [2024-11-28 03:42:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:48,663 INFO L225 Difference]: With dead ends: 355 [2024-11-28 03:42:48,663 INFO L226 Difference]: Without dead ends: 353 [2024-11-28 03:42:48,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 620 SyntacticMatches, 113 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6715 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5135, Invalid=8671, Unknown=0, NotChecked=0, Total=13806 [2024-11-28 03:42:48,664 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:48,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 533 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:42:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-28 03:42:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2024-11-28 03:42:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.005813953488372) internal successors, (346), 344 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 346 transitions. [2024-11-28 03:42:48,684 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 346 transitions. Word has length 340 [2024-11-28 03:42:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:48,685 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 346 transitions. [2024-11-28 03:42:48,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.564516129032258) internal successors, (345), 62 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 346 transitions. [2024-11-28 03:42:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-28 03:42:48,686 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:48,686 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:48,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:48,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2024-11-28 03:42:48,886 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:48,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1727373417, now seen corresponding path program 111 times [2024-11-28 03:42:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:48,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795975211] [2024-11-28 03:42:48,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:48,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2024-11-28 03:42:48,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9464 backedges. 6107 proven. 3357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795975211] [2024-11-28 03:42:55,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795975211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174273411] [2024-11-28 03:42:55,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:55,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:55,238 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:55,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-11-28 03:42:55,862 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2024-11-28 03:42:55,862 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:55,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-28 03:42:55,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9464 backedges. 6328 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:01,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9464 backedges. 6328 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174273411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:06,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117, 117] total 176 [2024-11-28 03:43:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636232232] [2024-11-28 03:43:06,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2024-11-28 03:43:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:06,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2024-11-28 03:43:06,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6907, Invalid=23893, Unknown=0, NotChecked=0, Total=30800 [2024-11-28 03:43:06,293 INFO L87 Difference]: Start difference. First operand 345 states and 346 transitions. Second operand has 176 states, 176 states have (on average 3.284090909090909) internal successors, (578), 176 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:07,438 INFO L93 Difference]: Finished difference Result 580 states and 582 transitions. [2024-11-28 03:43:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-28 03:43:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 3.284090909090909) internal successors, (578), 176 states have internal predecessors, (578), 0 states have call successors, (0), 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 344 [2024-11-28 03:43:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:07,440 INFO L225 Difference]: With dead ends: 580 [2024-11-28 03:43:07,440 INFO L226 Difference]: Without dead ends: 348 [2024-11-28 03:43:07,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 516 SyntacticMatches, 113 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20216 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=6907, Invalid=23893, Unknown=0, NotChecked=0, Total=30800 [2024-11-28 03:43:07,441 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 1 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:07,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1236 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:43:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-28 03:43:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2024-11-28 03:43:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.0057803468208093) internal successors, (348), 346 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2024-11-28 03:43:07,463 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 344 [2024-11-28 03:43:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:07,463 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2024-11-28 03:43:07,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 3.284090909090909) internal successors, (578), 176 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2024-11-28 03:43:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-28 03:43:07,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:07,464 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:07,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2024-11-28 03:43:07,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-28 03:43:07,664 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:07,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1437307099, now seen corresponding path program 112 times [2024-11-28 03:43:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:07,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840554259] [2024-11-28 03:43:07,665 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:07,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:07,742 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:07,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9577 backedges. 3249 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840554259] [2024-11-28 03:43:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840554259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614403242] [2024-11-28 03:43:11,178 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:11,179 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-11-28 03:43:11,699 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:11,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:11,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-28 03:43:11,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9577 backedges. 3249 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:12,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9577 backedges. 3249 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614403242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:15,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-11-28 03:43:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756704805] [2024-11-28 03:43:15,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:15,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-28 03:43:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:15,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-28 03:43:15,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1775, Invalid=2007, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:43:15,110 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand has 62 states, 62 states have (on average 5.612903225806452) internal successors, (348), 62 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:16,446 INFO L93 Difference]: Finished difference Result 361 states and 362 transitions. [2024-11-28 03:43:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-28 03:43:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.612903225806452) internal successors, (348), 62 states have internal predecessors, (348), 0 states have call successors, (0), 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 346 [2024-11-28 03:43:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:16,448 INFO L225 Difference]: With dead ends: 361 [2024-11-28 03:43:16,448 INFO L226 Difference]: Without dead ends: 359 [2024-11-28 03:43:16,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 633 SyntacticMatches, 114 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6499 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5309, Invalid=8733, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 03:43:16,448 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 8 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:16,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 362 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:43:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-28 03:43:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 351. [2024-11-28 03:43:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.0057142857142858) internal successors, (352), 350 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-11-28 03:43:16,468 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 346 [2024-11-28 03:43:16,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:16,468 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-11-28 03:43:16,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.612903225806452) internal successors, (348), 62 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-11-28 03:43:16,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-28 03:43:16,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:16,469 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:16,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-11-28 03:43:16,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2024-11-28 03:43:16,670 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:16,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1973888798, now seen corresponding path program 113 times [2024-11-28 03:43:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308491046] [2024-11-28 03:43:16,670 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:16,802 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-28 03:43:16,802 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6555 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308491046] [2024-11-28 03:43:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308491046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314038132] [2024-11-28 03:43:23,381 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:23,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:23,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:23,383 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:23,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-11-28 03:43:24,051 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-28 03:43:24,052 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:24,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-28 03:43:24,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6555 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:30,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9804 backedges. 6555 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:34,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314038132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:34,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119, 119] total 177 [2024-11-28 03:43:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429334620] [2024-11-28 03:43:34,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:34,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2024-11-28 03:43:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:34,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2024-11-28 03:43:34,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7079, Invalid=24073, Unknown=0, NotChecked=0, Total=31152 [2024-11-28 03:43:34,780 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 177 states, 177 states have (on average 3.2768361581920904) internal successors, (580), 177 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:36,147 INFO L93 Difference]: Finished difference Result 590 states and 592 transitions. [2024-11-28 03:43:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-28 03:43:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 3.2768361581920904) internal successors, (580), 177 states have internal predecessors, (580), 0 states have call successors, (0), 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 350 [2024-11-28 03:43:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:36,149 INFO L225 Difference]: With dead ends: 590 [2024-11-28 03:43:36,149 INFO L226 Difference]: Without dead ends: 354 [2024-11-28 03:43:36,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 526 SyntacticMatches, 116 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19951 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=7079, Invalid=24073, Unknown=0, NotChecked=0, Total=31152 [2024-11-28 03:43:36,150 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 1 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:36,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1243 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:43:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-28 03:43:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2024-11-28 03:43:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0056818181818181) internal successors, (354), 352 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) [2024-11-28 03:43:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 354 transitions. [2024-11-28 03:43:36,173 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 354 transitions. Word has length 350 [2024-11-28 03:43:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:36,173 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 354 transitions. [2024-11-28 03:43:36,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 3.2768361581920904) internal successors, (580), 177 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 354 transitions. [2024-11-28 03:43:36,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2024-11-28 03:43:36,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:36,175 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:36,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-11-28 03:43:36,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-28 03:43:36,375 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:36,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1464269018, now seen corresponding path program 114 times [2024-11-28 03:43:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896200334] [2024-11-28 03:43:36,376 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:36,491 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2024-11-28 03:43:36,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 3249 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896200334] [2024-11-28 03:43:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896200334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028818070] [2024-11-28 03:43:40,231 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:40,232 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-11-28 03:43:40,904 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 59 check-sat command(s) [2024-11-28 03:43:40,905 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:40,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-28 03:43:40,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 3364 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:41,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9919 backedges. 3364 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028818070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:44,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:44,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 64 [2024-11-28 03:43:44,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849592404] [2024-11-28 03:43:44,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:44,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 03:43:44,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:44,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 03:43:44,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1838, Invalid=2194, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:43:44,498 INFO L87 Difference]: Start difference. First operand 353 states and 354 transitions. Second operand has 64 states, 64 states have (on average 5.578125) internal successors, (357), 64 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:45,972 INFO L93 Difference]: Finished difference Result 367 states and 368 transitions. [2024-11-28 03:43:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-28 03:43:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.578125) internal successors, (357), 64 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2024-11-28 03:43:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:45,974 INFO L225 Difference]: With dead ends: 367 [2024-11-28 03:43:45,974 INFO L226 Difference]: Without dead ends: 365 [2024-11-28 03:43:45,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 643 SyntacticMatches, 116 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7129 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5492, Invalid=9270, Unknown=0, NotChecked=0, Total=14762 [2024-11-28 03:43:45,975 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 8 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:45,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 518 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:43:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-28 03:43:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 357. [2024-11-28 03:43:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.0056179775280898) internal successors, (358), 356 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 358 transitions. [2024-11-28 03:43:45,997 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 358 transitions. Word has length 352 [2024-11-28 03:43:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:45,997 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 358 transitions. [2024-11-28 03:43:45,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.578125) internal successors, (357), 64 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 358 transitions. [2024-11-28 03:43:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 03:43:45,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:45,998 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:46,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2024-11-28 03:43:46,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:46,199 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:46,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash 299643309, now seen corresponding path program 115 times [2024-11-28 03:43:46,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:46,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020478117] [2024-11-28 03:43:46,199 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:46,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6557 proven. 3593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:53,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:53,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020478117] [2024-11-28 03:43:53,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020478117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:53,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767154098] [2024-11-28 03:43:53,888 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:53,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:53,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:53,890 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:53,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-11-28 03:43:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:54,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-28 03:43:54,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6786 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:01,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6786 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:06,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767154098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:06,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:06,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121, 121] total 182 [2024-11-28 03:44:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828245890] [2024-11-28 03:44:06,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:06,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2024-11-28 03:44:06,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:06,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2024-11-28 03:44:06,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7385, Invalid=25557, Unknown=0, NotChecked=0, Total=32942 [2024-11-28 03:44:06,379 INFO L87 Difference]: Start difference. First operand 357 states and 358 transitions. Second operand has 182 states, 182 states have (on average 3.2857142857142856) internal successors, (598), 182 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:07,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:07,619 INFO L93 Difference]: Finished difference Result 600 states and 602 transitions. [2024-11-28 03:44:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-28 03:44:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 3.2857142857142856) internal successors, (598), 182 states have internal predecessors, (598), 0 states have call successors, (0), 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 356 [2024-11-28 03:44:07,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:07,621 INFO L225 Difference]: With dead ends: 600 [2024-11-28 03:44:07,621 INFO L226 Difference]: Without dead ends: 360 [2024-11-28 03:44:07,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 534 SyntacticMatches, 117 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21634 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=7385, Invalid=25557, Unknown=0, NotChecked=0, Total=32942 [2024-11-28 03:44:07,622 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:07,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1136 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:44:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-28 03:44:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2024-11-28 03:44:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.005586592178771) internal successors, (360), 358 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-11-28 03:44:07,644 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 356 [2024-11-28 03:44:07,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:07,644 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-11-28 03:44:07,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 3.2857142857142856) internal successors, (598), 182 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-11-28 03:44:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-28 03:44:07,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:07,646 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:07,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-11-28 03:44:07,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2024-11-28 03:44:07,846 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:07,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1409916145, now seen corresponding path program 116 times [2024-11-28 03:44:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239687433] [2024-11-28 03:44:07,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:07,926 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:07,926 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10267 backedges. 3364 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:11,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239687433] [2024-11-28 03:44:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239687433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:11,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488882754] [2024-11-28 03:44:11,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:11,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:11,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:11,618 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:11,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-11-28 03:44:12,177 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:12,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:12,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-28 03:44:12,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10267 backedges. 3481 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:12,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10267 backedges. 3481 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:15,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488882754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:15,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:15,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 65 [2024-11-28 03:44:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293898112] [2024-11-28 03:44:15,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:15,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 03:44:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:15,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 03:44:15,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1899, Invalid=2261, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:44:15,832 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 65 states, 65 states have (on average 5.584615384615384) internal successors, (363), 65 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:17,394 INFO L93 Difference]: Finished difference Result 373 states and 374 transitions. [2024-11-28 03:44:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-28 03:44:17,395 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.584615384615384) internal successors, (363), 65 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2024-11-28 03:44:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:17,396 INFO L225 Difference]: With dead ends: 373 [2024-11-28 03:44:17,396 INFO L226 Difference]: Without dead ends: 371 [2024-11-28 03:44:17,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 653 SyntacticMatches, 119 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7429 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5675, Invalid=9577, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 03:44:17,397 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 8 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:17,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 487 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:44:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-28 03:44:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 363. [2024-11-28 03:44:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.0055248618784531) internal successors, (364), 362 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2024-11-28 03:44:17,418 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 358 [2024-11-28 03:44:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:17,418 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2024-11-28 03:44:17,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.584615384615384) internal successors, (363), 65 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2024-11-28 03:44:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-28 03:44:17,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:17,419 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:17,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-11-28 03:44:17,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2024-11-28 03:44:17,619 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:17,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash -737744392, now seen corresponding path program 117 times [2024-11-28 03:44:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520387893] [2024-11-28 03:44:17,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:17,696 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2024-11-28 03:44:17,696 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 10502 backedges. 6788 proven. 3714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:24,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:24,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520387893] [2024-11-28 03:44:24,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520387893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959995126] [2024-11-28 03:44:24,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:24,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:24,626 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:24,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-11-28 03:44:25,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2024-11-28 03:44:25,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:25,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-28 03:44:25,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10502 backedges. 7021 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:31,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10502 backedges. 7021 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959995126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:36,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:36,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123, 123] total 185 [2024-11-28 03:44:36,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180564110] [2024-11-28 03:44:36,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:36,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2024-11-28 03:44:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:36,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2024-11-28 03:44:36,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7630, Invalid=26410, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 03:44:36,960 INFO L87 Difference]: Start difference. First operand 363 states and 364 transitions. Second operand has 185 states, 185 states have (on average 3.2864864864864867) internal successors, (608), 185 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:38,571 INFO L93 Difference]: Finished difference Result 610 states and 612 transitions. [2024-11-28 03:44:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-28 03:44:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.2864864864864867) internal successors, (608), 185 states have internal predecessors, (608), 0 states have call successors, (0), 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 362 [2024-11-28 03:44:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:38,572 INFO L225 Difference]: With dead ends: 610 [2024-11-28 03:44:38,572 INFO L226 Difference]: Without dead ends: 366 [2024-11-28 03:44:38,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 543 SyntacticMatches, 119 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22361 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=7630, Invalid=26410, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 03:44:38,574 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 1 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:38,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1600 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:44:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-28 03:44:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2024-11-28 03:44:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.0054945054945055) internal successors, (366), 364 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2024-11-28 03:44:38,596 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 362 [2024-11-28 03:44:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:38,597 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2024-11-28 03:44:38,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.2864864864864867) internal successors, (608), 185 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2024-11-28 03:44:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-28 03:44:38,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:38,598 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:38,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2024-11-28 03:44:38,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2024-11-28 03:44:38,798 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:38,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1214239292, now seen corresponding path program 118 times [2024-11-28 03:44:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867732388] [2024-11-28 03:44:38,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:38,885 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:38,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10621 backedges. 3600 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867732388] [2024-11-28 03:44:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867732388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983139854] [2024-11-28 03:44:42,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:42,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:42,808 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:42,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-11-28 03:44:43,379 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:43,379 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:43,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-28 03:44:43,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10621 backedges. 3600 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:43,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10621 backedges. 3600 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:47,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983139854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:47,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:47,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 65 [2024-11-28 03:44:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356813787] [2024-11-28 03:44:47,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:47,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 03:44:47,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:47,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 03:44:47,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1958, Invalid=2202, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:44:47,257 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand has 65 states, 65 states have (on average 5.630769230769231) internal successors, (366), 65 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:48,755 INFO L93 Difference]: Finished difference Result 379 states and 380 transitions. [2024-11-28 03:44:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-28 03:44:48,756 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.630769230769231) internal successors, (366), 65 states have internal predecessors, (366), 0 states have call successors, (0), 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 364 [2024-11-28 03:44:48,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:48,758 INFO L225 Difference]: With dead ends: 379 [2024-11-28 03:44:48,758 INFO L226 Difference]: Without dead ends: 377 [2024-11-28 03:44:48,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 665 SyntacticMatches, 121 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7261 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=5858, Invalid=9642, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 03:44:48,759 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 10 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:48,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 402 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:44:48,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-28 03:44:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2024-11-28 03:44:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.0054347826086956) internal successors, (370), 368 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 370 transitions. [2024-11-28 03:44:48,782 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 370 transitions. Word has length 364 [2024-11-28 03:44:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:48,783 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 370 transitions. [2024-11-28 03:44:48,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.630769230769231) internal successors, (366), 65 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 370 transitions. [2024-11-28 03:44:48,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-28 03:44:48,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:48,784 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:48,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:48,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2024-11-28 03:44:48,984 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:48,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1671724605, now seen corresponding path program 119 times [2024-11-28 03:44:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869523643] [2024-11-28 03:44:48,985 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:49,125 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-28 03:44:49,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10860 backedges. 7260 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869523643] [2024-11-28 03:44:56,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869523643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:56,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415264519] [2024-11-28 03:44:56,531 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:56,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:56,533 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:56,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-11-28 03:44:57,270 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-28 03:44:57,271 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:57,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-28 03:44:57,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10860 backedges. 7260 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:04,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10860 backedges. 7260 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415264519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:09,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125, 125] total 186 [2024-11-28 03:45:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875168309] [2024-11-28 03:45:09,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:09,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2024-11-28 03:45:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:09,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2024-11-28 03:45:09,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7811, Invalid=26599, Unknown=0, NotChecked=0, Total=34410 [2024-11-28 03:45:09,732 INFO L87 Difference]: Start difference. First operand 369 states and 370 transitions. Second operand has 186 states, 186 states have (on average 3.2795698924731185) internal successors, (610), 186 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:11,382 INFO L93 Difference]: Finished difference Result 620 states and 622 transitions. [2024-11-28 03:45:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-28 03:45:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 3.2795698924731185) internal successors, (610), 186 states have internal predecessors, (610), 0 states have call successors, (0), 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 368 [2024-11-28 03:45:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:11,384 INFO L225 Difference]: With dead ends: 620 [2024-11-28 03:45:11,384 INFO L226 Difference]: Without dead ends: 372 [2024-11-28 03:45:11,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 553 SyntacticMatches, 122 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22081 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=7811, Invalid=26599, Unknown=0, NotChecked=0, Total=34410 [2024-11-28 03:45:11,385 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:11,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1468 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:45:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-28 03:45:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 371. [2024-11-28 03:45:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0054054054054054) internal successors, (372), 370 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 372 transitions. [2024-11-28 03:45:11,410 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 372 transitions. Word has length 368 [2024-11-28 03:45:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:11,410 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 372 transitions. [2024-11-28 03:45:11,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 3.2795698924731185) internal successors, (610), 186 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 372 transitions. [2024-11-28 03:45:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-11-28 03:45:11,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:11,411 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:11,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-11-28 03:45:11,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:11,611 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:11,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 562964231, now seen corresponding path program 120 times [2024-11-28 03:45:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:11,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128804210] [2024-11-28 03:45:11,612 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:11,764 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-11-28 03:45:11,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10981 backedges. 3600 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128804210] [2024-11-28 03:45:15,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128804210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625913370] [2024-11-28 03:45:15,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:15,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:15,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:15,805 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:15,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-11-28 03:45:16,543 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-11-28 03:45:16,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:16,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-28 03:45:16,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10981 backedges. 3721 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:16,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 10981 backedges. 3721 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:20,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625913370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:20,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:20,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 67 [2024-11-28 03:45:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804807630] [2024-11-28 03:45:20,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:20,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-28 03:45:20,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:20,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-28 03:45:20,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=2398, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 03:45:20,408 INFO L87 Difference]: Start difference. First operand 371 states and 372 transitions. Second operand has 67 states, 67 states have (on average 5.597014925373134) internal successors, (375), 67 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:21,992 INFO L93 Difference]: Finished difference Result 385 states and 386 transitions. [2024-11-28 03:45:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-28 03:45:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.597014925373134) internal successors, (375), 67 states have internal predecessors, (375), 0 states have call successors, (0), 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 370 [2024-11-28 03:45:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:21,994 INFO L225 Difference]: With dead ends: 385 [2024-11-28 03:45:21,994 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 03:45:21,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 676 SyntacticMatches, 122 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7864 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6050, Invalid=10206, Unknown=0, NotChecked=0, Total=16256 [2024-11-28 03:45:21,995 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 10 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:21,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 567 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:45:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 03:45:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2024-11-28 03:45:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.0053475935828877) internal successors, (376), 374 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:22,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-11-28 03:45:22,018 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 370 [2024-11-28 03:45:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:22,018 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-11-28 03:45:22,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.597014925373134) internal successors, (375), 67 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:22,018 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-11-28 03:45:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-28 03:45:22,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:22,019 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:22,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-11-28 03:45:22,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:22,220 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:22,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash -647202546, now seen corresponding path program 121 times [2024-11-28 03:45:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:22,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534624319] [2024-11-28 03:45:22,220 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11224 backedges. 7262 proven. 3962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534624319] [2024-11-28 03:45:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534624319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760898131] [2024-11-28 03:45:29,820 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:29,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:29,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:29,821 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:29,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-11-28 03:45:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:30,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 03:45:30,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11224 backedges. 7503 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:37,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11224 backedges. 7503 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760898131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:43,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 191 [2024-11-28 03:45:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662182031] [2024-11-28 03:45:43,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:43,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2024-11-28 03:45:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:43,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2024-11-28 03:45:43,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8132, Invalid=28158, Unknown=0, NotChecked=0, Total=36290 [2024-11-28 03:45:43,065 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 191 states, 191 states have (on average 3.287958115183246) internal successors, (628), 191 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:44,494 INFO L93 Difference]: Finished difference Result 630 states and 632 transitions. [2024-11-28 03:45:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-28 03:45:44,494 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 3.287958115183246) internal successors, (628), 191 states have internal predecessors, (628), 0 states have call successors, (0), 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 374 [2024-11-28 03:45:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:44,496 INFO L225 Difference]: With dead ends: 630 [2024-11-28 03:45:44,496 INFO L226 Difference]: Without dead ends: 378 [2024-11-28 03:45:44,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 561 SyntacticMatches, 123 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23851 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=8132, Invalid=28158, Unknown=0, NotChecked=0, Total=36290 [2024-11-28 03:45:44,497 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:44,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1364 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:45:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-28 03:45:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 377. [2024-11-28 03:45:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.0053191489361701) internal successors, (378), 376 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 378 transitions. [2024-11-28 03:45:44,531 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 378 transitions. Word has length 374 [2024-11-28 03:45:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:44,531 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 378 transitions. [2024-11-28 03:45:44,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 3.287958115183246) internal successors, (628), 191 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 378 transitions. [2024-11-28 03:45:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-28 03:45:44,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:44,532 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:44,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-11-28 03:45:44,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2024-11-28 03:45:44,733 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:44,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1569252526, now seen corresponding path program 122 times [2024-11-28 03:45:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:44,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506127648] [2024-11-28 03:45:44,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:44,827 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:44,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11347 backedges. 3721 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506127648] [2024-11-28 03:45:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506127648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045717371] [2024-11-28 03:45:49,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:49,018 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:49,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-11-28 03:45:49,602 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:49,602 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:49,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-28 03:45:49,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11347 backedges. 3844 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:50,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11347 backedges. 3844 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045717371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:53,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 68 [2024-11-28 03:45:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170912112] [2024-11-28 03:45:53,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:53,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:45:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:53,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:45:53,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2088, Invalid=2468, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:45:53,722 INFO L87 Difference]: Start difference. First operand 377 states and 378 transitions. Second operand has 68 states, 68 states have (on average 5.602941176470588) internal successors, (381), 68 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:55,450 INFO L93 Difference]: Finished difference Result 391 states and 392 transitions. [2024-11-28 03:45:55,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-28 03:45:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.602941176470588) internal successors, (381), 68 states have internal predecessors, (381), 0 states have call successors, (0), 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 376 [2024-11-28 03:45:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:55,452 INFO L225 Difference]: With dead ends: 391 [2024-11-28 03:45:55,452 INFO L226 Difference]: Without dead ends: 389 [2024-11-28 03:45:55,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 686 SyntacticMatches, 125 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8179 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6242, Invalid=10528, Unknown=0, NotChecked=0, Total=16770 [2024-11-28 03:45:55,453 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 10 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:55,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 570 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:45:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-28 03:45:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 381. [2024-11-28 03:45:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.0052631578947369) internal successors, (382), 380 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2024-11-28 03:45:55,495 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 376 [2024-11-28 03:45:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:55,495 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2024-11-28 03:45:55,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.602941176470588) internal successors, (381), 68 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2024-11-28 03:45:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-28 03:45:55,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:55,496 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:55,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-11-28 03:45:55,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-11-28 03:45:55,697 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:55,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 417091545, now seen corresponding path program 123 times [2024-11-28 03:45:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:55,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616696671] [2024-11-28 03:45:55,697 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:55,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:55,791 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-28 03:45:55,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7505 proven. 4089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616696671] [2024-11-28 03:46:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616696671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796316189] [2024-11-28 03:46:03,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:46:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:03,634 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:03,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-11-28 03:46:04,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-28 03:46:04,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:04,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-28 03:46:04,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7750 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:11,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7750 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:17,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796316189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:17,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:17,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 194 [2024-11-28 03:46:17,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436626809] [2024-11-28 03:46:17,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:17,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2024-11-28 03:46:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:17,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2024-11-28 03:46:17,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8389, Invalid=29053, Unknown=0, NotChecked=0, Total=37442 [2024-11-28 03:46:17,580 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 194 states, 194 states have (on average 3.288659793814433) internal successors, (638), 194 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:19,305 INFO L93 Difference]: Finished difference Result 640 states and 642 transitions. [2024-11-28 03:46:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-28 03:46:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.288659793814433) internal successors, (638), 194 states have internal predecessors, (638), 0 states have call successors, (0), 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 380 [2024-11-28 03:46:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:19,307 INFO L225 Difference]: With dead ends: 640 [2024-11-28 03:46:19,307 INFO L226 Difference]: Without dead ends: 384 [2024-11-28 03:46:19,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 570 SyntacticMatches, 125 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24614 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=8389, Invalid=29053, Unknown=0, NotChecked=0, Total=37442 [2024-11-28 03:46:19,309 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:19,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1646 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:46:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-28 03:46:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2024-11-28 03:46:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.0052356020942408) internal successors, (384), 382 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-11-28 03:46:19,336 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 380 [2024-11-28 03:46:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:19,336 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-11-28 03:46:19,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.288659793814433) internal successors, (638), 194 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-11-28 03:46:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-28 03:46:19,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:19,337 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:19,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2024-11-28 03:46:19,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-11-28 03:46:19,538 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:19,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 822947613, now seen corresponding path program 124 times [2024-11-28 03:46:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094248843] [2024-11-28 03:46:19,538 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:19,641 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:19,641 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11719 backedges. 3969 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094248843] [2024-11-28 03:46:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094248843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363069338] [2024-11-28 03:46:24,055 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:24,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:24,057 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:24,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_887bec53-a470-4d3c-a0c0-bcfa3bf03351/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-11-28 03:46:24,674 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:24,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:24,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-28 03:46:24,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 11719 backedges. 3969 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:25,132 INFO L312 TraceCheckSpWp]: Computing backward predicates...