./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/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_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/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_99cf5493-d377-40cf-a9a6-979d060baad5/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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:37:02,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:37:02,563 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:37:02,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:37:02,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:37:02,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:37:02,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:37:02,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:37:02,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:37:02,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:37:02,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:37:02,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:37:02,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:37:02,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:37:02,630 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:37:02,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:37:02,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:37:02,632 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:37:02,632 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:37:02,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:37:02,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:37:02,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:37:02,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:37:02,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:37:02,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:37:02,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:37:02,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:37:02,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:37:02,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:37:02,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:37:02,635 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:37:02,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:37:02,636 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_99cf5493-d377-40cf-a9a6-979d060baad5/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 -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2024-11-28 04:37:03,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:37:03,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:37:03,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:37:03,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:37:03,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:37:03,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-fpi/s3lif.c [2024-11-28 04:37:06,247 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/data/1f1c47ac6/91a374304bb9496cbd22cdd1b13bb6f0/FLAGd03270b49 [2024-11-28 04:37:06,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:37:06,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/sv-benchmarks/c/array-fpi/s3lif.c [2024-11-28 04:37:06,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/data/1f1c47ac6/91a374304bb9496cbd22cdd1b13bb6f0/FLAGd03270b49 [2024-11-28 04:37:06,593 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/data/1f1c47ac6/91a374304bb9496cbd22cdd1b13bb6f0 [2024-11-28 04:37:06,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:37:06,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:37:06,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:37:06,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:37:06,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:37:06,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:06,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac546b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06, skipping insertion in model container [2024-11-28 04:37:06,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:06,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:37:06,831 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_99cf5493-d377-40cf-a9a6-979d060baad5/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2024-11-28 04:37:06,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:37:06,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:37:06,897 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2024-11-28 04:37:06,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:37:06,922 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:37:06,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06 WrapperNode [2024-11-28 04:37:06,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:37:06,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:37:06,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:37:06,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:37:06,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:06,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:06,990 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-28 04:37:06,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:37:06,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:37:06,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:37:06,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:37:07,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,027 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 4, 7]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 2, 3]. [2024-11-28 04:37:07,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,042 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:37:07,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:37:07,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:37:07,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:37:07,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (1/1) ... [2024-11-28 04:37:07,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:37:07,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:07,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:37:07,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:37:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:37:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:37:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:37:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:37:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:37:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:37:07,229 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:37:07,231 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:37:07,418 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-28 04:37:07,418 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:37:07,427 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:37:07,428 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:37:07,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:07 BoogieIcfgContainer [2024-11-28 04:37:07,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:37:07,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:37:07,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:37:07,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:37:07,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:37:06" (1/3) ... [2024-11-28 04:37:07,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9954f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:37:07, skipping insertion in model container [2024-11-28 04:37:07,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:06" (2/3) ... [2024-11-28 04:37:07,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9954f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:37:07, skipping insertion in model container [2024-11-28 04:37:07,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:07" (3/3) ... [2024-11-28 04:37:07,444 INFO L128 eAbstractionObserver]: Analyzing ICFG s3lif.c [2024-11-28 04:37:07,468 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:37:07,472 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s3lif.c that has 1 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 04:37:07,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:37:07,553 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;@3c241cc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:37:07,554 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:37:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:37:07,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:07,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:07,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:07,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1595760861, now seen corresponding path program 1 times [2024-11-28 04:37:07,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:07,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270939389] [2024-11-28 04:37:07,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:07,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:07,743 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 04:37:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270939389] [2024-11-28 04:37:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270939389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:37:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107904227] [2024-11-28 04:37:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:07,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:37:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:07,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:37:07,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:37:07,788 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 04:37:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:07,799 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2024-11-28 04:37:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:37:07,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) Word has length 13 [2024-11-28 04:37:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:07,808 INFO L225 Difference]: With dead ends: 42 [2024-11-28 04:37:07,808 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 04:37:07,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:37:07,815 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:07,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:37:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 04:37:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-28 04:37:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 04:37:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-28 04:37:07,852 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2024-11-28 04:37:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:07,853 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-28 04:37:07,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 04:37:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-28 04:37:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:37:07,855 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:07,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:07,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:37:07,857 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:07,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1988787871, now seen corresponding path program 1 times [2024-11-28 04:37:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632572802] [2024-11-28 04:37:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:08,071 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 04:37:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:08,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632572802] [2024-11-28 04:37:08,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632572802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:37:08,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:37:08,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:37:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17774550] [2024-11-28 04:37:08,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:37:08,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:37:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:08,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:37:08,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:37:08,075 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 04:37:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:08,171 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-28 04:37:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:37:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) Word has length 13 [2024-11-28 04:37:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:08,173 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:37:08,173 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:37:08,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:37:08,174 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:08,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:37:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-28 04:37:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 04:37:08,182 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-11-28 04:37:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:08,182 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 04:37:08,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 04:37:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 04:37:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:37:08,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:08,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:08,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:37:08,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:08,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1925988239, now seen corresponding path program 1 times [2024-11-28 04:37:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:08,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819055696] [2024-11-28 04:37:08,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819055696] [2024-11-28 04:37:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819055696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473476142] [2024-11-28 04:37:09,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:09,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:09,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:09,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:37:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:09,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:37:09,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:09,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:10,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:10,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:10,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:10,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-11-28 04:37:10,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:10,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-28 04:37:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473476142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:10,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:10,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2024-11-28 04:37:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054873259] [2024-11-28 04:37:10,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:10,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:37:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:10,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:37:10,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:37:10,845 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:11,466 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-28 04:37:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:37:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:37:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:11,467 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:37:11,468 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 04:37:11,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:37:11,469 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 73 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:11,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 61 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:37:11,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 04:37:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2024-11-28 04:37:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 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 04:37:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-28 04:37:11,477 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2024-11-28 04:37:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:11,477 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-28 04:37:11,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-28 04:37:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:37:11,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:11,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:11,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:11,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:11,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:11,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1975952047, now seen corresponding path program 1 times [2024-11-28 04:37:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820314974] [2024-11-28 04:37:11,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820314974] [2024-11-28 04:37:11,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820314974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735767113] [2024-11-28 04:37:11,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:11,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:11,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:37:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:12,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:37:12,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:12,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:12,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:12,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 04:37:12,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 04:37:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735767113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:12,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-28 04:37:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876050059] [2024-11-28 04:37:12,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:12,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:37:12,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:12,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:37:12,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:37:12,129 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 04:37:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:12,225 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-28 04:37:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:37:12,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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) Word has length 21 [2024-11-28 04:37:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:12,227 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:37:12,227 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:37:12,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:37:12,228 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:12,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:37:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2024-11-28 04:37:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-28 04:37:12,234 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-11-28 04:37:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:12,234 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-28 04:37:12,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 04:37:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-28 04:37:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:37:12,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:12,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:12,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:12,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:12,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:12,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1595312501, now seen corresponding path program 2 times [2024-11-28 04:37:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:12,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124616093] [2024-11-28 04:37:12,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:12,467 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:12,468 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:12,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124616093] [2024-11-28 04:37:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124616093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:12,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967998862] [2024-11-28 04:37:12,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:12,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:12,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:12,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:12,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:37:12,675 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:12,675 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:12,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:37:12,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:12,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967998862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:12,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:12,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 04:37:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820026003] [2024-11-28 04:37:12,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:12,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:37:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:12,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:37:12,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:37:12,857 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 04:37:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:13,111 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-28 04:37:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:37:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 23 [2024-11-28 04:37:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:13,113 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:37:13,113 INFO L226 Difference]: Without dead ends: 52 [2024-11-28 04:37:13,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:37:13,114 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:13,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 28 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-28 04:37:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 34. [2024-11-28 04:37:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 04:37:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-28 04:37:13,130 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2024-11-28 04:37:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:13,130 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-28 04:37:13,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 04:37:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-28 04:37:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:37:13,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:13,131 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:13,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:13,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:13,338 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:13,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash 194983701, now seen corresponding path program 3 times [2024-11-28 04:37:13,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:13,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764376455] [2024-11-28 04:37:13,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:13,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:13,368 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:37:13,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764376455] [2024-11-28 04:37:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764376455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773020277] [2024-11-28 04:37:13,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:13,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:13,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:13,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:13,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:37:13,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:37:13,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:13,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:37:13,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:13,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:37:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773020277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:13,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:13,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 04:37:13,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108090762] [2024-11-28 04:37:13,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:13,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:37:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:13,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:37:13,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:37:13,724 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 04:37:13,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:13,891 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-28 04:37:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:37:13,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 23 [2024-11-28 04:37:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:13,893 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:37:13,893 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 04:37:13,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:37:13,894 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:13,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 04:37:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-11-28 04:37:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 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 04:37:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-11-28 04:37:13,908 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2024-11-28 04:37:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:13,909 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-11-28 04:37:13,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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 04:37:13,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-11-28 04:37:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:37:13,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:13,909 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:13,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:37:14,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:37:14,114 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:14,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash -291854463, now seen corresponding path program 4 times [2024-11-28 04:37:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034452219] [2024-11-28 04:37:14,114 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:14,172 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:14,176 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034452219] [2024-11-28 04:37:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034452219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716010279] [2024-11-28 04:37:15,843 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:15,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:15,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:15,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:37:15,939 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:15,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:15,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:37:15,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:15,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:16,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:16,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:16,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:37:16,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:16,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:16,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:17,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-28 04:37:17,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:17,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 394 treesize of output 391 [2024-11-28 04:37:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716010279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:18,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 47 [2024-11-28 04:37:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84432084] [2024-11-28 04:37:18,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 04:37:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:18,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 04:37:18,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1898, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:37:18,230 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 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 04:37:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:21,690 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2024-11-28 04:37:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 04:37:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 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 29 [2024-11-28 04:37:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:21,695 INFO L225 Difference]: With dead ends: 100 [2024-11-28 04:37:21,695 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 04:37:21,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1049, Invalid=5923, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 04:37:21,699 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 175 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:21,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 107 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:37:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 04:37:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 55. [2024-11-28 04:37:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2024-11-28 04:37:21,721 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 29 [2024-11-28 04:37:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:21,721 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2024-11-28 04:37:21,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 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 04:37:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2024-11-28 04:37:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:37:21,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:21,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:21,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:37:21,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:37:21,923 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:21,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash -33689025, now seen corresponding path program 1 times [2024-11-28 04:37:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505993064] [2024-11-28 04:37:21,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:21,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:22,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505993064] [2024-11-28 04:37:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505993064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624357152] [2024-11-28 04:37:22,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:22,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:22,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:22,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:22,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:37:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:22,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:37:22,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:22,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:22,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:37:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:22,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:22,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:37:22,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:37:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:22,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624357152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:22,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:22,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 04:37:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735103422] [2024-11-28 04:37:22,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:22,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:37:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:22,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:37:22,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:37:22,536 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:22,654 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-11-28 04:37:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:37:22,655 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 04:37:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:22,655 INFO L225 Difference]: With dead ends: 92 [2024-11-28 04:37:22,656 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:37:22,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:37:22,656 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:22,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:37:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-11-28 04:37:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 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 04:37:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-28 04:37:22,668 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 29 [2024-11-28 04:37:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:22,668 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-28 04:37:22,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-28 04:37:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:37:22,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:22,669 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:22,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:22,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:37:22,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:22,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -894030715, now seen corresponding path program 5 times [2024-11-28 04:37:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199483522] [2024-11-28 04:37:22,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:37:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:22,892 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:37:22,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199483522] [2024-11-28 04:37:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199483522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038062537] [2024-11-28 04:37:22,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:37:22,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:22,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:22,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:22,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:37:23,077 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:37:23,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:23,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:37:23,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:23,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038062537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:23,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:23,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 04:37:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031980480] [2024-11-28 04:37:23,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:23,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:37:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:23,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:37:23,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:37:23,232 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 04:37:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:23,511 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2024-11-28 04:37:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:37:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 31 [2024-11-28 04:37:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:23,512 INFO L225 Difference]: With dead ends: 86 [2024-11-28 04:37:23,512 INFO L226 Difference]: Without dead ends: 76 [2024-11-28 04:37:23,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:37:23,513 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:23,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-28 04:37:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2024-11-28 04:37:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2024-11-28 04:37:23,538 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 31 [2024-11-28 04:37:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:23,541 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2024-11-28 04:37:23,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 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 04:37:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2024-11-28 04:37:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:37:23,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:23,542 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:23,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:37:23,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:23,743 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:23,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:23,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1360487899, now seen corresponding path program 6 times [2024-11-28 04:37:23,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:23,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070101472] [2024-11-28 04:37:23,744 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:37:23,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:23,784 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:37:23,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:37:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:23,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070101472] [2024-11-28 04:37:23,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070101472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:23,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273404246] [2024-11-28 04:37:23,905 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:37:23,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:23,908 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:23,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:37:24,005 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 04:37:24,006 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:24,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:37:24,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:37:24,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:37:24,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273404246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:24,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:24,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 04:37:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395234102] [2024-11-28 04:37:24,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:24,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:37:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:24,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:37:24,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:37:24,182 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:24,333 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2024-11-28 04:37:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:37:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 04:37:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:24,334 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:37:24,334 INFO L226 Difference]: Without dead ends: 43 [2024-11-28 04:37:24,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:37:24,335 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:24,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 43 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-28 04:37:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2024-11-28 04:37:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-28 04:37:24,344 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 31 [2024-11-28 04:37:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:24,345 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-28 04:37:24,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-28 04:37:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:37:24,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:24,345 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:24,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:37:24,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:37:24,546 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:24,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -455985519, now seen corresponding path program 7 times [2024-11-28 04:37:24,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:24,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204332193] [2024-11-28 04:37:24,547 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:37:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:26,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:26,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204332193] [2024-11-28 04:37:26,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204332193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:26,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21240157] [2024-11-28 04:37:26,450 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:37:26,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:26,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:26,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:26,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:37:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:26,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:37:26,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:26,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:26,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:26,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:26,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:37:27,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:37:27,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:27,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:27,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:27,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:28,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 125 [2024-11-28 04:37:28,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:28,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 13205 treesize of output 12623 [2024-11-28 04:37:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21240157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:29,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 56 [2024-11-28 04:37:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179035478] [2024-11-28 04:37:29,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:29,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:37:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:29,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:37:29,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2718, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:37:29,155 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 56 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 56 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:31,081 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2024-11-28 04:37:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:37:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 56 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-28 04:37:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:31,083 INFO L225 Difference]: With dead ends: 93 [2024-11-28 04:37:31,083 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:37:31,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=639, Invalid=4191, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 04:37:31,085 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 82 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:31,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 110 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:37:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:37:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2024-11-28 04:37:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 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 04:37:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-11-28 04:37:31,098 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 37 [2024-11-28 04:37:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:31,099 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-11-28 04:37:31,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 56 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-11-28 04:37:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:37:31,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:31,101 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:31,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:37:31,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:31,302 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1467102769, now seen corresponding path program 2 times [2024-11-28 04:37:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744145391] [2024-11-28 04:37:31,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:31,325 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:31,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744145391] [2024-11-28 04:37:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744145391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769640415] [2024-11-28 04:37:31,671 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:31,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:31,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:37:31,761 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:31,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:31,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:37:31,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:31,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:31,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:37:31,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:37:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:31,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:31,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:37:31,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:37:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769640415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:32,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-28 04:37:32,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170550952] [2024-11-28 04:37:32,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:32,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:37:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:32,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:37:32,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:37:32,006 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 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 04:37:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:32,259 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2024-11-28 04:37:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:37:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-28 04:37:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:32,260 INFO L225 Difference]: With dead ends: 77 [2024-11-28 04:37:32,260 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 04:37:32,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:37:32,261 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:32,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 102 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 04:37:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-11-28 04:37:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2024-11-28 04:37:32,273 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 37 [2024-11-28 04:37:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:32,273 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2024-11-28 04:37:32,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 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 04:37:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2024-11-28 04:37:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:37:32,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:32,274 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:32,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:32,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:32,475 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:32,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1420457877, now seen corresponding path program 8 times [2024-11-28 04:37:32,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:32,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526688644] [2024-11-28 04:37:32,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:32,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:32,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:32,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:32,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:32,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526688644] [2024-11-28 04:37:32,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526688644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864177296] [2024-11-28 04:37:32,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:32,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:32,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:32,641 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:32,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:37:32,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:32,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:32,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:37:32,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:32,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:37:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864177296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:32,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 04:37:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140467590] [2024-11-28 04:37:32,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:37:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:32,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:37:32,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:37:32,966 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 04:37:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:33,284 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-11-28 04:37:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:37:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 39 [2024-11-28 04:37:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:33,286 INFO L225 Difference]: With dead ends: 80 [2024-11-28 04:37:33,286 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 04:37:33,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:37:33,287 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:33,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 36 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 04:37:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-11-28 04:37:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-11-28 04:37:33,309 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 39 [2024-11-28 04:37:33,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:33,309 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-11-28 04:37:33,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 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 04:37:33,309 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-11-28 04:37:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:37:33,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:33,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:33,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:33,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:33,511 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:33,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1227471707, now seen corresponding path program 3 times [2024-11-28 04:37:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928220166] [2024-11-28 04:37:33,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:33,558 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:33,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:33,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928220166] [2024-11-28 04:37:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928220166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253379664] [2024-11-28 04:37:33,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:33,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:33,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:33,715 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:33,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:37:33,871 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:33,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:33,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:37:33,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:34,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253379664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:34,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 04:37:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931244313] [2024-11-28 04:37:34,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:34,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:37:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:34,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:37:34,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:37:34,122 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:34,277 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-28 04:37:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:37:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 04:37:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:34,278 INFO L225 Difference]: With dead ends: 87 [2024-11-28 04:37:34,278 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 04:37:34,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:37:34,279 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:34,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:37:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 04:37:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2024-11-28 04:37:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-28 04:37:34,289 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 43 [2024-11-28 04:37:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:34,290 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-28 04:37:34,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-28 04:37:34,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:37:34,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:34,291 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:34,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:34,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:37:34,491 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:34,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash -58561119, now seen corresponding path program 9 times [2024-11-28 04:37:34,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:34,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220631192] [2024-11-28 04:37:34,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:34,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:34,564 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:34,564 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:36,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220631192] [2024-11-28 04:37:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220631192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33765031] [2024-11-28 04:37:36,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:36,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:36,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:36,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:36,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:37:36,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:36,912 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:36,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:37:36,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:36,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:37,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:37,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:37,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:37:37,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:37,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:37:37,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:37,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:37:37,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:37,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:37,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 04:37:38,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:37:38,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:38,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 69 treesize of output 95 [2024-11-28 04:37:38,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 81 [2024-11-28 04:37:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:38,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:40,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 126 [2024-11-28 04:37:40,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:40,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 5530 treesize of output 5481 [2024-11-28 04:37:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33765031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:40,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 65 [2024-11-28 04:37:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610778349] [2024-11-28 04:37:40,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:40,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-28 04:37:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:40,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-28 04:37:40,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=3778, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 04:37:40,427 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 65 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:42,459 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-28 04:37:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:37:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-28 04:37:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:42,461 INFO L225 Difference]: With dead ends: 68 [2024-11-28 04:37:42,461 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 04:37:42,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=633, Invalid=5687, Unknown=0, NotChecked=0, Total=6320 [2024-11-28 04:37:42,463 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:42,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 143 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:37:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 04:37:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2024-11-28 04:37:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 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 04:37:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-28 04:37:42,480 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 45 [2024-11-28 04:37:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:42,481 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-28 04:37:42,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-28 04:37:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:37:42,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:42,482 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:42,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:37:42,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:37:42,683 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:42,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1079629473, now seen corresponding path program 4 times [2024-11-28 04:37:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129730868] [2024-11-28 04:37:42,683 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:42,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:42,709 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:42,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 04:37:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129730868] [2024-11-28 04:37:43,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129730868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348551544] [2024-11-28 04:37:43,050 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:43,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:43,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:43,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:43,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:37:43,152 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:43,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:43,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:37:43,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:43,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 04:37:43,264 INFO L349 Elim1Store]: treesize reduction 22, result has 42.1 percent of original size [2024-11-28 04:37:43,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-11-28 04:37:43,353 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-28 04:37:43,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2024-11-28 04:37:43,475 INFO L349 Elim1Store]: treesize reduction 24, result has 40.0 percent of original size [2024-11-28 04:37:43,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2024-11-28 04:37:43,656 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:37:43,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2024-11-28 04:37:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:37:43,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:43,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:37:43,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-28 04:37:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:37:43,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348551544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:43,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 13] total 28 [2024-11-28 04:37:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143480342] [2024-11-28 04:37:43,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:43,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:37:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:43,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:37:43,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:37:43,971 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 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 04:37:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:45,241 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2024-11-28 04:37:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 04:37:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 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) Word has length 45 [2024-11-28 04:37:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:45,242 INFO L225 Difference]: With dead ends: 97 [2024-11-28 04:37:45,242 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 04:37:45,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=944, Invalid=2596, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:37:45,244 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 65 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:45,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 70 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:37:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 04:37:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 55. [2024-11-28 04:37:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 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 04:37:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-28 04:37:45,260 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 45 [2024-11-28 04:37:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:45,261 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-28 04:37:45,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 28 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 04:37:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-28 04:37:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:37:45,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:45,262 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:45,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:37:45,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:37:45,465 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:45,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -503883707, now seen corresponding path program 10 times [2024-11-28 04:37:45,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:45,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031059032] [2024-11-28 04:37:45,466 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:45,480 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:45,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031059032] [2024-11-28 04:37:45,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031059032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443499382] [2024-11-28 04:37:45,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:37:45,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:45,622 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:45,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:37:45,729 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:37:45,730 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:45,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:37:45,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:45,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:45,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443499382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:45,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:45,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 04:37:45,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098463312] [2024-11-28 04:37:45,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:45,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:37:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:45,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:37:45,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:37:45,979 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 04:37:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:46,216 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2024-11-28 04:37:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:37:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 47 [2024-11-28 04:37:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:46,217 INFO L225 Difference]: With dead ends: 118 [2024-11-28 04:37:46,217 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 04:37:46,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:37:46,218 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:46,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 25 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 04:37:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2024-11-28 04:37:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-28 04:37:46,236 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 47 [2024-11-28 04:37:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:46,236 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-28 04:37:46,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 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 04:37:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-28 04:37:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:37:46,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:46,237 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:46,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:37:46,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:37:46,442 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:46,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1399360781, now seen corresponding path program 11 times [2024-11-28 04:37:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827928055] [2024-11-28 04:37:46,443 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:37:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:46,467 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:37:46,467 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:37:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827928055] [2024-11-28 04:37:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827928055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274836817] [2024-11-28 04:37:46,643 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:37:46,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:46,647 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:46,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:37:47,126 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:37:47,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:47,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:37:47,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:37:47,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:37:47,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274836817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:47,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 04:37:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535349930] [2024-11-28 04:37:47,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:47,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:37:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:47,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:37:47,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:37:47,348 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:47,626 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-28 04:37:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:37:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 04:37:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:47,627 INFO L225 Difference]: With dead ends: 65 [2024-11-28 04:37:47,627 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 04:37:47,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:37:47,628 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:47,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:37:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 04:37:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-11-28 04:37:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 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 04:37:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-28 04:37:47,644 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 51 [2024-11-28 04:37:47,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:47,644 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-28 04:37:47,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:37:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-28 04:37:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:37:47,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:47,645 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:47,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:37:47,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:37:47,845 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:47,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 399723697, now seen corresponding path program 12 times [2024-11-28 04:37:47,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:47,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741324167] [2024-11-28 04:37:47,846 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:37:47,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:47,895 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:37:47,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:37:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741324167] [2024-11-28 04:37:50,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741324167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:50,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262243362] [2024-11-28 04:37:50,642 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:37:50,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:50,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:50,644 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:50,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:37:50,823 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:37:50,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:50,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-28 04:37:50,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:50,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:37:51,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:51,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:51,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:37:51,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:51,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:37:52,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:52,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:37:52,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:52,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-28 04:37:52,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:52,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:53,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:53,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:37:53,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:53,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 69 [2024-11-28 04:37:53,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-28 04:37:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:53,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:56,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 192 [2024-11-28 04:37:56,612 INFO L349 Elim1Store]: treesize reduction 108, result has 51.6 percent of original size [2024-11-28 04:37:56,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 374324 treesize of output 351876 [2024-11-28 04:37:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:37:58,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262243362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:58,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:58,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34, 36] total 94 [2024-11-28 04:37:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476715125] [2024-11-28 04:37:58,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:58,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-28 04:37:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:58,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-28 04:37:58,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=7600, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 04:37:58,045 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 94 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 94 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 04:38:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:01,823 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-28 04:38:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:38:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 94 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 04:38:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:01,825 INFO L225 Difference]: With dead ends: 85 [2024-11-28 04:38:01,825 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:38:01,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4448 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1449, Invalid=9893, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 04:38:01,827 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:01,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 136 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:38:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:38:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2024-11-28 04:38:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2024-11-28 04:38:01,840 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 53 [2024-11-28 04:38:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:01,840 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2024-11-28 04:38:01,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 94 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 04:38:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2024-11-28 04:38:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:38:01,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:01,841 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:01,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:02,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:02,041 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:02,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash 618578415, now seen corresponding path program 5 times [2024-11-28 04:38:02,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905796700] [2024-11-28 04:38:02,042 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:02,094 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:38:02,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:38:02,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905796700] [2024-11-28 04:38:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905796700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:02,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397600846] [2024-11-28 04:38:02,691 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:02,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:02,693 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:02,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:38:03,505 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:38:03,506 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:03,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:38:03,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:03,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:38:03,562 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-28 04:38:03,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 04:38:03,669 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-28 04:38:03,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 04:38:03,747 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-11-28 04:38:03,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2024-11-28 04:38:03,825 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-11-28 04:38:03,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2024-11-28 04:38:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:38:03,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:04,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-11-28 04:38:04,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 04:38:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 23 proven. 45 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:38:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397600846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:04,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:04,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-28 04:38:04,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372819624] [2024-11-28 04:38:04,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:04,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:38:04,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:04,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:38:04,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:38:04,026 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 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 04:38:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:04,429 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2024-11-28 04:38:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:38:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 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) Word has length 53 [2024-11-28 04:38:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:04,430 INFO L225 Difference]: With dead ends: 81 [2024-11-28 04:38:04,430 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 04:38:04,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:38:04,431 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:04,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 72 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 04:38:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-28 04:38:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-28 04:38:04,443 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 53 [2024-11-28 04:38:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:04,443 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-28 04:38:04,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 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 04:38:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-28 04:38:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:38:04,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:04,444 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:04,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:38:04,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:04,644 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:04,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:04,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1766261017, now seen corresponding path program 13 times [2024-11-28 04:38:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883270447] [2024-11-28 04:38:04,645 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:38:04,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 49 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:38:04,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883270447] [2024-11-28 04:38:04,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883270447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549387867] [2024-11-28 04:38:04,894 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:38:04,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:04,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:04,898 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:04,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:38:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:05,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:38:05,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:38:05,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:38:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549387867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:05,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 04:38:05,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711699274] [2024-11-28 04:38:05,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:05,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:38:05,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:05,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:38:05,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:38:05,384 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:05,677 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2024-11-28 04:38:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:38:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-28 04:38:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:05,678 INFO L225 Difference]: With dead ends: 118 [2024-11-28 04:38:05,678 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 04:38:05,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:38:05,679 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:05,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 51 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 04:38:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2024-11-28 04:38:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-28 04:38:05,699 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 57 [2024-11-28 04:38:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:05,699 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-28 04:38:05,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-28 04:38:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:38:05,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:05,700 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:05,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:05,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:38:05,905 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:05,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:05,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2049402851, now seen corresponding path program 14 times [2024-11-28 04:38:05,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:05,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045906778] [2024-11-28 04:38:05,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:38:05,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:05,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:38:05,930 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:38:06,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:06,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045906778] [2024-11-28 04:38:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045906778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223139544] [2024-11-28 04:38:06,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:38:06,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:06,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:06,146 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:06,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:38:06,279 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:38:06,279 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:06,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:38:06,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:38:06,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:38:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223139544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:06,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:06,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 04:38:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623818679] [2024-11-28 04:38:06,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:06,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:38:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:06,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:38:06,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:38:06,621 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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 04:38:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:06,933 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2024-11-28 04:38:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:38:06,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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 59 [2024-11-28 04:38:06,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:06,934 INFO L225 Difference]: With dead ends: 73 [2024-11-28 04:38:06,934 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 04:38:06,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:38:06,936 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 134 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:06,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 23 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 04:38:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2024-11-28 04:38:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-28 04:38:06,950 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 59 [2024-11-28 04:38:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:06,950 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-28 04:38:06,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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 04:38:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-28 04:38:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:38:06,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:06,951 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:06,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:38:07,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:38:07,151 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:07,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1852625857, now seen corresponding path program 15 times [2024-11-28 04:38:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404662954] [2024-11-28 04:38:07,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:38:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:07,227 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:38:07,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 3 proven. 126 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:38:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404662954] [2024-11-28 04:38:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404662954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500802170] [2024-11-28 04:38:11,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:38:11,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:11,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:11,208 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:11,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:38:11,496 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:38:11,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:11,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-28 04:38:11,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:11,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:38:11,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:11,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:11,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:38:11,837 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-28 04:38:11,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 41 [2024-11-28 04:38:12,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,106 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-28 04:38:12,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 51 [2024-11-28 04:38:12,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,447 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-28 04:38:12,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 59 treesize of output 65 [2024-11-28 04:38:12,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:13,004 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-28 04:38:13,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 70 treesize of output 79 [2024-11-28 04:38:13,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:13,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:14,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-28 04:38:14,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-28 04:38:14,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-11-28 04:38:14,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2024-11-28 04:38:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:38:14,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:14,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 35 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 87 treesize of output 111 [2024-11-28 04:38:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:38:14,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:17,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 160 [2024-11-28 04:38:17,755 INFO L349 Elim1Store]: treesize reduction 72, result has 27.3 percent of original size [2024-11-28 04:38:17,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 373 treesize of output 346 [2024-11-28 04:38:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:38:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500802170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:17,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 34, 33] total 95 [2024-11-28 04:38:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709730690] [2024-11-28 04:38:17,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:17,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-28 04:38:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:17,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-28 04:38:17,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=7746, Unknown=0, NotChecked=0, Total=8930 [2024-11-28 04:38:17,975 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 95 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 95 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 04:38:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:35,288 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2024-11-28 04:38:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-28 04:38:35,289 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 95 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) Word has length 61 [2024-11-28 04:38:35,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:35,289 INFO L225 Difference]: With dead ends: 147 [2024-11-28 04:38:35,289 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 04:38:35,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11987 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=4546, Invalid=29494, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 04:38:35,292 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 256 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:35,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 167 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:38:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 04:38:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 93. [2024-11-28 04:38:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.173913043478261) internal successors, (108), 92 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 04:38:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-11-28 04:38:35,326 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 61 [2024-11-28 04:38:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:35,326 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-11-28 04:38:35,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 95 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 04:38:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-11-28 04:38:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:38:35,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:35,327 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:35,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:38:35,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:38:35,528 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:35,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2099202459, now seen corresponding path program 16 times [2024-11-28 04:38:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:35,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687149564] [2024-11-28 04:38:35,529 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:38:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:35,543 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:38:35,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 49 proven. 66 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:38:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687149564] [2024-11-28 04:38:35,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687149564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688734486] [2024-11-28 04:38:35,780 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:38:35,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:35,782 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:35,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:38:35,928 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:38:35,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:35,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:38:35,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 49 proven. 66 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:38:36,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 49 proven. 66 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:38:36,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688734486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:36,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:36,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2024-11-28 04:38:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309450938] [2024-11-28 04:38:36,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:36,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:38:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:36,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:38:36,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:38:36,290 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:36,600 INFO L93 Difference]: Finished difference Result 223 states and 259 transitions. [2024-11-28 04:38:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:38:36,600 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-28 04:38:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:36,601 INFO L225 Difference]: With dead ends: 223 [2024-11-28 04:38:36,601 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 04:38:36,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 105 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:38:36,602 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 104 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:36,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 59 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 04:38:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2024-11-28 04:38:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 98 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2024-11-28 04:38:36,634 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 63 [2024-11-28 04:38:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:36,634 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2024-11-28 04:38:36,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:38:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2024-11-28 04:38:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:38:36,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:36,636 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:36,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:38:36,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:38:36,839 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1921580335, now seen corresponding path program 17 times [2024-11-28 04:38:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242781070] [2024-11-28 04:38:36,840 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:36,901 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:38:36,903 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:38:41,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242781070] [2024-11-28 04:38:41,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242781070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005033551] [2024-11-28 04:38:41,741 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:41,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:41,743 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:41,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:38:46,256 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 04:38:46,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:46,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-28 04:38:46,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:46,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:38:46,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:46,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:46,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:38:46,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:46,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:38:47,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:47,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:38:47,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:47,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-28 04:38:47,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-28 04:38:48,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:48,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-28 04:38:48,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:48,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:48,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:48,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:49,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:49,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:49,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:38:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:38:49,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:55,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 531 treesize of output 503 [2024-11-28 04:38:57,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:57,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 11768595661062531 treesize of output 11654246451774213 [2024-11-28 04:39:02,811 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 4672 DAG size of output: 208 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:39:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:39:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005033551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:06,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:06,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 35, 35] total 105 [2024-11-28 04:39:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948084506] [2024-11-28 04:39:06,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:06,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 04:39:06,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:06,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 04:39:06,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=10149, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:39:06,132 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 105 states, 105 states have (on average 1.6285714285714286) internal successors, (171), 105 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:14,284 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2024-11-28 04:39:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 04:39:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.6285714285714286) internal successors, (171), 105 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-28 04:39:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:14,285 INFO L225 Difference]: With dead ends: 131 [2024-11-28 04:39:14,285 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 04:39:14,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1599, Invalid=18423, Unknown=0, NotChecked=0, Total=20022 [2024-11-28 04:39:14,287 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:14,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 246 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:39:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 04:39:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2024-11-28 04:39:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 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 04:39:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2024-11-28 04:39:14,355 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 69 [2024-11-28 04:39:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:14,356 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2024-11-28 04:39:14,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.6285714285714286) internal successors, (171), 105 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2024-11-28 04:39:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:39:14,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:14,357 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:14,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:39:14,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:39:14,558 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:14,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:14,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1859540721, now seen corresponding path program 6 times [2024-11-28 04:39:14,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:14,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200107064] [2024-11-28 04:39:14,559 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:39:14,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:14,614 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 04:39:14,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 38 proven. 97 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 04:39:15,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200107064] [2024-11-28 04:39:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200107064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:15,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816100701] [2024-11-28 04:39:15,879 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:39:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:15,881 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:15,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:39:16,995 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 04:39:16,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:16,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 04:39:17,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:17,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 04:39:17,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 04:39:17,273 INFO L349 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2024-11-28 04:39:17,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 37 [2024-11-28 04:39:17,410 INFO L349 Elim1Store]: treesize reduction 48, result has 42.2 percent of original size [2024-11-28 04:39:17,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 49 [2024-11-28 04:39:17,765 INFO L349 Elim1Store]: treesize reduction 68, result has 48.5 percent of original size [2024-11-28 04:39:17,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 105 [2024-11-28 04:39:18,383 INFO L349 Elim1Store]: treesize reduction 68, result has 48.5 percent of original size [2024-11-28 04:39:18,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 100 [2024-11-28 04:39:18,878 INFO L349 Elim1Store]: treesize reduction 68, result has 48.5 percent of original size [2024-11-28 04:39:18,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 100 [2024-11-28 04:39:19,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:19,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 86 [2024-11-28 04:39:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 56 proven. 95 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 04:39:19,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 63 proven. 96 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:39:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816100701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:20,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 28] total 72 [2024-11-28 04:39:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043190138] [2024-11-28 04:39:20,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-28 04:39:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:20,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-28 04:39:20,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 04:39:20,980 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:22,869 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-11-28 04:39:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 04:39:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-28 04:39:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:22,871 INFO L225 Difference]: With dead ends: 144 [2024-11-28 04:39:22,871 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 04:39:22,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4051 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1750, Invalid=8150, Unknown=0, NotChecked=0, Total=9900 [2024-11-28 04:39:22,872 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:22,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 82 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:39:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 04:39:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-28 04:39:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.161904761904762) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2024-11-28 04:39:22,909 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 69 [2024-11-28 04:39:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:22,910 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2024-11-28 04:39:22,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 72 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2024-11-28 04:39:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 04:39:22,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:22,910 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:22,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:39:23,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:39:23,111 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:23,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 136012149, now seen corresponding path program 18 times [2024-11-28 04:39:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100056105] [2024-11-28 04:39:23,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:39:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:23,162 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:39:23,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-28 04:39:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100056105] [2024-11-28 04:39:23,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100056105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339653112] [2024-11-28 04:39:23,490 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:39:23,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:23,492 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:23,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:39:25,019 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 04:39:25,019 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:25,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:39:25,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 89 proven. 49 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:39:25,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 64 proven. 74 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:39:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339653112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:25,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:25,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 33 [2024-11-28 04:39:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899538474] [2024-11-28 04:39:25,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:25,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:39:25,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:25,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:39:25,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:39:25,567 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 33 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:26,114 INFO L93 Difference]: Finished difference Result 286 states and 329 transitions. [2024-11-28 04:39:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 04:39:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 33 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-28 04:39:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:26,116 INFO L225 Difference]: With dead ends: 286 [2024-11-28 04:39:26,116 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 04:39:26,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 112 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=547, Invalid=1615, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:39:26,116 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 237 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:26,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 40 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:39:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 04:39:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 112. [2024-11-28 04:39:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.162162162162162) internal successors, (129), 111 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 04:39:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2024-11-28 04:39:26,157 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 71 [2024-11-28 04:39:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:26,157 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2024-11-28 04:39:26,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.393939393939394) internal successors, (79), 33 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2024-11-28 04:39:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:39:26,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:26,158 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:26,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:39:26,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:39:26,359 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:26,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1311374715, now seen corresponding path program 7 times [2024-11-28 04:39:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:26,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638764656] [2024-11-28 04:39:26,359 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:26,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:39:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638764656] [2024-11-28 04:39:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638764656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828851149] [2024-11-28 04:39:26,632 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:26,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:26,633 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:26,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:39:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:26,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:39:26,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:39:27,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-28 04:39:27,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828851149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:27,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:27,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 04:39:27,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26502475] [2024-11-28 04:39:27,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:27,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:39:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:27,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:39:27,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:39:27,331 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 04:39:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:27,901 INFO L93 Difference]: Finished difference Result 169 states and 192 transitions. [2024-11-28 04:39:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:39:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 75 [2024-11-28 04:39:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:27,902 INFO L225 Difference]: With dead ends: 169 [2024-11-28 04:39:27,902 INFO L226 Difference]: Without dead ends: 165 [2024-11-28 04:39:27,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 124 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:39:27,903 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 204 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:27,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 33 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:39:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-28 04:39:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 78. [2024-11-28 04:39:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.077922077922078) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:39:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2024-11-28 04:39:27,955 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2024-11-28 04:39:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:27,955 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2024-11-28 04:39:27,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 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 04:39:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2024-11-28 04:39:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:39:27,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:27,956 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:27,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:39:28,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:39:28,156 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:28,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1469700577, now seen corresponding path program 19 times [2024-11-28 04:39:28,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:28,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022065423] [2024-11-28 04:39:28,157 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:28,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 6 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022065423] [2024-11-28 04:39:35,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022065423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:35,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460309254] [2024-11-28 04:39:35,033 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:35,035 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:35,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:39:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:35,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-28 04:39:35,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:35,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:39:35,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:36,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:36,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:39:36,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:36,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:39:36,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:36,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:39:36,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:36,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-28 04:39:37,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:37,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-28 04:39:37,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:37,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-28 04:39:38,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:38,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 81 [2024-11-28 04:39:38,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:38,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:39,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:39:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:39:40,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:47,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 672 treesize of output 640 [2024-11-28 04:39:50,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:50,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input -1664076214267338668 treesize of output -3825804035405176235 [2024-11-28 04:40:03,545 WARN L286 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 10486 DAG size of output: 249 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:40:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:08,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460309254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:08,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:08,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 47, 47] total 132 [2024-11-28 04:40:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356765682] [2024-11-28 04:40:08,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:08,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-28 04:40:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:08,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-28 04:40:08,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=15581, Unknown=0, NotChecked=0, Total=17292 [2024-11-28 04:40:08,475 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 132 states, 132 states have (on average 1.5757575757575757) internal successors, (208), 132 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 04:40:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:27,054 INFO L93 Difference]: Finished difference Result 232 states and 256 transitions. [2024-11-28 04:40:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 04:40:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.5757575757575757) internal successors, (208), 132 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 77 [2024-11-28 04:40:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:27,056 INFO L225 Difference]: With dead ends: 232 [2024-11-28 04:40:27,057 INFO L226 Difference]: Without dead ends: 179 [2024-11-28 04:40:27,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12885 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=3923, Invalid=33133, Unknown=0, NotChecked=0, Total=37056 [2024-11-28 04:40:27,059 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 167 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 5099 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 5258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 5099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:27,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 246 Invalid, 5258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 5099 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 04:40:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-28 04:40:27,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 129. [2024-11-28 04:40:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.1015625) internal successors, (141), 128 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 04:40:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2024-11-28 04:40:27,129 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 77 [2024-11-28 04:40:27,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:27,130 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2024-11-28 04:40:27,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.5757575757575757) internal successors, (208), 132 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 04:40:27,130 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2024-11-28 04:40:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:40:27,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:27,131 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:27,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:40:27,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:40:27,332 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:27,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1744460191, now seen corresponding path program 8 times [2024-11-28 04:40:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544170315] [2024-11-28 04:40:27,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:27,376 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:27,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 36 proven. 148 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:40:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544170315] [2024-11-28 04:40:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544170315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138472054] [2024-11-28 04:40:28,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:28,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:28,729 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:28,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:40:28,925 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:28,925 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:28,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:40:28,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:29,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:40:29,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 04:40:29,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 04:40:29,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 04:40:29,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 04:40:29,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 04:40:29,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 04:40:29,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:29,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 31 [2024-11-28 04:40:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 57 proven. 119 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:40:30,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:30,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-28 04:40:30,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-28 04:40:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 61 proven. 115 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:40:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138472054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:30,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 18] total 55 [2024-11-28 04:40:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562015090] [2024-11-28 04:40:30,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:30,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 04:40:30,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:30,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 04:40:30,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2622, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:40:30,930 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand has 55 states, 55 states have (on average 2.7636363636363637) internal successors, (152), 55 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:33,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:33,022 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2024-11-28 04:40:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:40:33,023 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.7636363636363637) internal successors, (152), 55 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 04:40:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:33,023 INFO L225 Difference]: With dead ends: 173 [2024-11-28 04:40:33,023 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 04:40:33,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=923, Invalid=7267, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 04:40:33,025 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:33,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 121 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:40:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 04:40:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 129. [2024-11-28 04:40:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0546875) internal successors, (135), 128 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2024-11-28 04:40:33,087 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 77 [2024-11-28 04:40:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:33,088 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2024-11-28 04:40:33,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.7636363636363637) internal successors, (152), 55 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2024-11-28 04:40:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:40:33,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:33,089 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:33,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 04:40:33,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:33,289 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:33,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 685863049, now seen corresponding path program 20 times [2024-11-28 04:40:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123330723] [2024-11-28 04:40:33,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:33,319 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:33,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 49 proven. 152 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:40:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123330723] [2024-11-28 04:40:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123330723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337822220] [2024-11-28 04:40:33,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:33,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:33,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:33,715 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:33,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:40:33,915 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:33,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:33,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:40:33,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 64 proven. 137 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:40:34,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 64 proven. 137 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:40:34,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337822220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:34,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:34,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 04:40:34,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101631849] [2024-11-28 04:40:34,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:34,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:40:34,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:34,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:40:34,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:40:34,609 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 32 states, 32 states have (on average 3.34375) internal successors, (107), 32 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:35,718 INFO L93 Difference]: Finished difference Result 157 states and 165 transitions. [2024-11-28 04:40:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:40:35,718 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.34375) internal successors, (107), 32 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-28 04:40:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:35,719 INFO L225 Difference]: With dead ends: 157 [2024-11-28 04:40:35,719 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 04:40:35,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 133 SyntacticMatches, 18 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=538, Invalid=1912, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:40:35,720 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 116 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:35,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 37 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:40:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 04:40:35,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2024-11-28 04:40:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.048) internal successors, (131), 125 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2024-11-28 04:40:35,780 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 81 [2024-11-28 04:40:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:35,781 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2024-11-28 04:40:35,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.34375) internal successors, (107), 32 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:40:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2024-11-28 04:40:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:40:35,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:35,781 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:35,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:40:35,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:35,982 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:35,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash 83712241, now seen corresponding path program 21 times [2024-11-28 04:40:35,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:35,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503159404] [2024-11-28 04:40:35,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:40:35,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:36,063 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:40:36,064 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:40:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503159404] [2024-11-28 04:40:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503159404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793993145] [2024-11-28 04:40:45,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:40:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:45,988 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:45,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:40:47,003 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 04:40:47,004 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:47,008 WARN L254 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 159 conjuncts are in the unsatisfiable core [2024-11-28 04:40:47,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:47,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:40:48,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:48,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:48,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:40:48,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:48,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:40:49,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:49,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:40:49,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:49,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-28 04:40:49,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:49,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-28 04:40:50,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:50,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-28 04:40:51,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:51,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 81 [2024-11-28 04:40:51,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:51,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 91 [2024-11-28 04:40:52,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:52,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:53,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:53,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:53,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:40:53,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 04:40:54,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2024-11-28 04:40:54,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2024-11-28 04:40:54,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-28 04:40:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:55,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:40:55,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:55,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 106 treesize of output 280 [2024-11-28 04:40:55,506 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-28 04:40:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 9 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:55,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:06,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 516 treesize of output 488 [2024-11-28 04:41:08,049 INFO L349 Elim1Store]: treesize reduction 80, result has 81.9 percent of original size [2024-11-28 04:41:08,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 740452361830488 treesize of output 739215411249538 [2024-11-28 04:42:07,732 WARN L286 SmtUtils]: Spent 59.68s on a formula simplification. DAG size of input: 1625 DAG size of output: 449 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:42:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 64 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793993145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:17,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 54, 55] total 157 [2024-11-28 04:42:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824414811] [2024-11-28 04:42:17,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:17,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2024-11-28 04:42:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:17,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2024-11-28 04:42:17,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2738, Invalid=21754, Unknown=0, NotChecked=0, Total=24492 [2024-11-28 04:42:17,119 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 157 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 157 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:51,972 WARN L286 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 291 DAG size of output: 249 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:43:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:03,005 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2024-11-28 04:43:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-28 04:43:03,005 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 157 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-28 04:43:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:03,006 INFO L225 Difference]: With dead ends: 164 [2024-11-28 04:43:03,006 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 04:43:03,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22343 ImplicationChecksByTransitivity, 53.9s TimeCoverageRelationStatistics Valid=7037, Invalid=57225, Unknown=0, NotChecked=0, Total=64262 [2024-11-28 04:43:03,010 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 302 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 6737 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 6985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 6737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:03,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 134 Invalid, 6985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 6737 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2024-11-28 04:43:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 04:43:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2024-11-28 04:43:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0579710144927537) internal successors, (146), 138 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2024-11-28 04:43:03,097 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 85 [2024-11-28 04:43:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:03,098 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2024-11-28 04:43:03,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 157 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2024-11-28 04:43:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:43:03,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:03,099 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:03,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:43:03,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:03,300 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:03,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash 647941465, now seen corresponding path program 22 times [2024-11-28 04:43:03,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049179166] [2024-11-28 04:43:03,300 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:03,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:03,330 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:03,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 153 proven. 118 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:43:03,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:03,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049179166] [2024-11-28 04:43:03,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049179166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:03,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422447009] [2024-11-28 04:43:03,950 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:43:03,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:03,953 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:03,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:43:04,164 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:43:04,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:04,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:43:04,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 153 proven. 118 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:43:04,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 153 proven. 118 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 04:43:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422447009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:04,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-28 04:43:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867993326] [2024-11-28 04:43:05,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:05,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:43:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:05,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:43:05,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:43:05,001 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 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 04:43:06,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:06,571 INFO L93 Difference]: Finished difference Result 240 states and 253 transitions. [2024-11-28 04:43:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 04:43:06,572 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 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 89 [2024-11-28 04:43:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:06,573 INFO L225 Difference]: With dead ends: 240 [2024-11-28 04:43:06,573 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 04:43:06,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 158 SyntacticMatches, 21 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=659, Invalid=2203, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 04:43:06,574 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 119 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:06,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 49 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:43:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 04:43:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 173. [2024-11-28 04:43:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.052325581395349) internal successors, (181), 172 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:43:06,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2024-11-28 04:43:06,675 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 89 [2024-11-28 04:43:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:06,675 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2024-11-28 04:43:06,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 33 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 04:43:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2024-11-28 04:43:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:43:06,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:06,676 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:06,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:43:06,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:06,877 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:06,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -159733251, now seen corresponding path program 23 times [2024-11-28 04:43:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948452399] [2024-11-28 04:43:06,878 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:06,923 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 04:43:06,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 04:43:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948452399] [2024-11-28 04:43:07,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948452399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068555702] [2024-11-28 04:43:07,324 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:43:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:07,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:07,326 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:07,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:45:07,697 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 04:45:07,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:07,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:45:07,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 04:45:08,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 04:45:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068555702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:08,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-28 04:45:08,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150462755] [2024-11-28 04:45:08,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:08,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:45:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:08,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:45:08,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:45:08,751 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 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 04:45:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:09,511 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2024-11-28 04:45:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:45:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 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 91 [2024-11-28 04:45:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:09,513 INFO L225 Difference]: With dead ends: 243 [2024-11-28 04:45:09,513 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 04:45:09,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 152 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=458, Invalid=1348, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:45:09,514 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 210 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:09,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 49 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:45:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 04:45:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 94. [2024-11-28 04:45:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 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 04:45:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2024-11-28 04:45:09,618 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 91 [2024-11-28 04:45:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:09,618 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2024-11-28 04:45:09,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 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 04:45:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2024-11-28 04:45:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:45:09,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:09,619 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:09,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:09,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:09,820 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:09,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash 592019457, now seen corresponding path program 24 times [2024-11-28 04:45:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:09,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714957604] [2024-11-28 04:45:09,821 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:09,915 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:45:09,915 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714957604] [2024-11-28 04:45:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714957604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362905044] [2024-11-28 04:45:26,439 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:26,441 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:26,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99cf5493-d377-40cf-a9a6-979d060baad5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:45:29,941 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:45:29,941 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:29,949 WARN L254 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 185 conjuncts are in the unsatisfiable core [2024-11-28 04:45:29,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:29,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:45:31,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:32,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:32,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 04:45:32,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:32,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-28 04:45:33,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:33,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 04:45:33,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:33,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-28 04:45:34,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:34,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-28 04:45:35,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:35,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-28 04:45:35,980 INFO L349 Elim1Store]: treesize reduction 140, result has 35.8 percent of original size [2024-11-28 04:45:35,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 72 treesize of output 111 [2024-11-28 04:45:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:37,205 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-28 04:45:37,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 35 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 83 treesize of output 101 [2024-11-28 04:45:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:38,962 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-28 04:45:38,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 44 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 46 case distinctions, treesize of input 94 treesize of output 115 [2024-11-28 04:45:40,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:40,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:41,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:41,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:42,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:42,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:42,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:43,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 04:45:43,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 04:45:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:45:44,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:44,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 47 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 209 [2024-11-28 04:45:44,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 213 [2024-11-28 04:45:44,527 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-28 04:45:44,534 WARN L672 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2024-11-28 04:45:44,558 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2024-11-28 04:45:44,569 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-28 04:45:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 16 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:45,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:08,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 872 treesize of output 836 [2024-11-28 04:46:14,816 WARN L286 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 377 DAG size of output: 251 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 04:46:14,816 INFO L349 Elim1Store]: treesize reduction 330, result has 63.0 percent of original size [2024-11-28 04:46:14,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 5354920711672553616 treesize of output 166773940941742717 [2024-11-28 04:47:45,726 WARN L286 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 9736 DAG size of output: 522 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:48:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:48:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362905044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:48:06,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:48:06,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 61, 63] total 184 [2024-11-28 04:48:06,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453998658] [2024-11-28 04:48:06,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:48:06,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2024-11-28 04:48:06,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:48:06,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2024-11-28 04:48:06,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4543, Invalid=29129, Unknown=0, NotChecked=0, Total=33672 [2024-11-28 04:48:06,837 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 184 states, 184 states have (on average 1.4728260869565217) internal successors, (271), 184 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)