./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC --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 64bit --witnessprinter.graph.data.programhash e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:44:16,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:44:16,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:44:16,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:44:16,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:44:16,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:44:16,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:44:16,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:44:16,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:44:16,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:44:16,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:44:16,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:44:16,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:44:16,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:44:16,940 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:44:16,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:44:16,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:44:16,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:44:16,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:44:16,941 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:16,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:44:16,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:16,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:44:16,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:44:16,943 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_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0b57c08af7035dacaf862ca8a67d9e46c03de7c7f0732dae53a8c2546607fd5 [2024-11-23 23:44:17,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:44:17,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:44:17,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:44:17,246 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:44:17,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:44:17,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-23 23:44:20,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/data/13bd52cfb/71fc5203fa054572a01ae706d6f9813a/FLAG1418d8877 [2024-11-23 23:44:20,509 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:44:20,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-23 23:44:20,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/data/13bd52cfb/71fc5203fa054572a01ae706d6f9813a/FLAG1418d8877 [2024-11-23 23:44:20,531 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/data/13bd52cfb/71fc5203fa054572a01ae706d6f9813a [2024-11-23 23:44:20,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:44:20,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:44:20,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:20,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:44:20,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:44:20,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb6b35c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20, skipping insertion in model container [2024-11-23 23:44:20,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:44:20,699 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_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-11-23 23:44:20,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:20,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:44:20,787 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_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c[1266,1279] [2024-11-23 23:44:20,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:44:20,867 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:44:20,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20 WrapperNode [2024-11-23 23:44:20,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:44:20,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:20,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:44:20,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:44:20,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,959 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 340 [2024-11-23 23:44:20,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:44:20,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:44:20,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:44:20,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:44:20,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,993 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:44:20,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:20,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,006 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:44:21,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:44:21,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:44:21,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:44:21,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (1/1) ... [2024-11-23 23:44:21,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:44:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:21,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:44:21,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:44:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:44:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:44:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:44:21,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:44:21,241 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:44:21,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:44:21,937 INFO L? ?]: Removed 136 outVars from TransFormulas that were not future-live. [2024-11-23 23:44:21,937 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:44:21,956 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:44:21,958 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:44:21,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:21 BoogieIcfgContainer [2024-11-23 23:44:21,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:44:21,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:44:21,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:44:21,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:44:21,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:44:20" (1/3) ... [2024-11-23 23:44:21,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a2bfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:21, skipping insertion in model container [2024-11-23 23:44:21,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:20" (2/3) ... [2024-11-23 23:44:21,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a2bfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:21, skipping insertion in model container [2024-11-23 23:44:21,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:21" (3/3) ... [2024-11-23 23:44:21,971 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c [2024-11-23 23:44:21,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:44:21,987 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p20.c that has 1 procedures, 62 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:44:22,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:44:22,049 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;@75929fd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:44:22,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:44:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-23 23:44:22,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:22,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:22,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:22,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -11435034, now seen corresponding path program 1 times [2024-11-23 23:44:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:22,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685457352] [2024-11-23 23:44:22,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:22,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685457352] [2024-11-23 23:44:22,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685457352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:22,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:22,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901653661] [2024-11-23 23:44:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:22,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:22,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:22,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:22,786 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2024-11-23 23:44:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:22,848 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2024-11-23 23:44:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) Word has length 25 [2024-11-23 23:44:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:22,859 INFO L225 Difference]: With dead ends: 101 [2024-11-23 23:44:22,859 INFO L226 Difference]: Without dead ends: 61 [2024-11-23 23:44:22,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:22,869 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:22,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-23 23:44:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-23 23:44:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-23 23:44:22,943 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 25 [2024-11-23 23:44:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:22,943 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-23 23:44:22,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2024-11-23 23:44:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-23 23:44:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-23 23:44:22,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:22,944 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:22,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:44:22,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:22,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -352790771, now seen corresponding path program 1 times [2024-11-23 23:44:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209258759] [2024-11-23 23:44:22,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:23,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209258759] [2024-11-23 23:44:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209258759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:23,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579183660] [2024-11-23 23:44:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:23,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:23,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:23,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:23,232 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:23,282 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-11-23 23:44:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:23,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-23 23:44:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:23,285 INFO L225 Difference]: With dead ends: 102 [2024-11-23 23:44:23,285 INFO L226 Difference]: Without dead ends: 63 [2024-11-23 23:44:23,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:23,286 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:23,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-23 23:44:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-23 23:44:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2024-11-23 23:44:23,298 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 26 [2024-11-23 23:44:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:23,298 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2024-11-23 23:44:23,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2024-11-23 23:44:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-23 23:44:23,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:23,301 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:23,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:44:23,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:23,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 850422175, now seen corresponding path program 1 times [2024-11-23 23:44:23,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:23,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545449495] [2024-11-23 23:44:23,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:23,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545449495] [2024-11-23 23:44:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545449495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:23,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:23,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:44:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753856311] [2024-11-23 23:44:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:23,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:44:23,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:23,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:44:23,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:23,799 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:23,847 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-11-23 23:44:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:44:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-23 23:44:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:23,849 INFO L225 Difference]: With dead ends: 104 [2024-11-23 23:44:23,849 INFO L226 Difference]: Without dead ends: 63 [2024-11-23 23:44:23,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:44:23,850 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:23,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 227 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-23 23:44:23,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-23 23:44:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-11-23 23:44:23,861 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 27 [2024-11-23 23:44:23,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:23,861 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-11-23 23:44:23,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-11-23 23:44:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-23 23:44:23,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:23,862 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:23,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:44:23,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:23,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1502170580, now seen corresponding path program 1 times [2024-11-23 23:44:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665717954] [2024-11-23 23:44:23,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:24,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665717954] [2024-11-23 23:44:24,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665717954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:24,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:24,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:44:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118660457] [2024-11-23 23:44:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:24,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:44:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:24,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:44:24,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:24,488 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:24,655 INFO L93 Difference]: Finished difference Result 114 states and 158 transitions. [2024-11-23 23:44:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:44:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-23 23:44:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:24,656 INFO L225 Difference]: With dead ends: 114 [2024-11-23 23:44:24,656 INFO L226 Difference]: Without dead ends: 73 [2024-11-23 23:44:24,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:44:24,658 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 88 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:24,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 448 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:44:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-23 23:44:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2024-11-23 23:44:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2024-11-23 23:44:24,663 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 28 [2024-11-23 23:44:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:24,663 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2024-11-23 23:44:24,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2024-11-23 23:44:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:44:24,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:24,664 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:24,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:44:24,665 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:24,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash -358005860, now seen corresponding path program 1 times [2024-11-23 23:44:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589071784] [2024-11-23 23:44:24,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589071784] [2024-11-23 23:44:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589071784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:25,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:25,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285994828] [2024-11-23 23:44:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:25,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:25,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:25,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:25,068 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:25,129 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-23 23:44:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:25,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2024-11-23 23:44:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:25,131 INFO L225 Difference]: With dead ends: 128 [2024-11-23 23:44:25,131 INFO L226 Difference]: Without dead ends: 78 [2024-11-23 23:44:25,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:25,132 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 71 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:25,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 233 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-23 23:44:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-23 23:44:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 77 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2024-11-23 23:44:25,144 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 29 [2024-11-23 23:44:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:25,144 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2024-11-23 23:44:25,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2024-11-23 23:44:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:44:25,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:25,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:25,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:44:25,146 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:25,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash 167789105, now seen corresponding path program 1 times [2024-11-23 23:44:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027612948] [2024-11-23 23:44:25,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:25,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027612948] [2024-11-23 23:44:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027612948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:25,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:25,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:44:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722693403] [2024-11-23 23:44:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:25,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:44:25,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:25,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:44:25,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:25,377 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:25,446 INFO L93 Difference]: Finished difference Result 166 states and 220 transitions. [2024-11-23 23:44:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2024-11-23 23:44:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:25,447 INFO L225 Difference]: With dead ends: 166 [2024-11-23 23:44:25,447 INFO L226 Difference]: Without dead ends: 110 [2024-11-23 23:44:25,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:25,448 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 132 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:25,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 231 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:44:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-23 23:44:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2024-11-23 23:44:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 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) [2024-11-23 23:44:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2024-11-23 23:44:25,454 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 29 [2024-11-23 23:44:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:25,454 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2024-11-23 23:44:25,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2024-11-23 23:44:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-23 23:44:25,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:25,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:25,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:44:25,455 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:25,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash 976517016, now seen corresponding path program 1 times [2024-11-23 23:44:25,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:25,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352312341] [2024-11-23 23:44:25,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352312341] [2024-11-23 23:44:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352312341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:44:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164120333] [2024-11-23 23:44:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:25,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:44:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:25,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:44:25,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:25,654 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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) [2024-11-23 23:44:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:25,834 INFO L93 Difference]: Finished difference Result 148 states and 195 transitions. [2024-11-23 23:44:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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 30 [2024-11-23 23:44:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:25,836 INFO L225 Difference]: With dead ends: 148 [2024-11-23 23:44:25,836 INFO L226 Difference]: Without dead ends: 92 [2024-11-23 23:44:25,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:44:25,837 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 98 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:25,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 254 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-23 23:44:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2024-11-23 23:44:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 81 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2024-11-23 23:44:25,847 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 30 [2024-11-23 23:44:25,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:25,851 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2024-11-23 23:44:25,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 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) [2024-11-23 23:44:25,851 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2024-11-23 23:44:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:44:25,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:25,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:25,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:44:25,854 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:25,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1363753517, now seen corresponding path program 1 times [2024-11-23 23:44:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:25,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403516536] [2024-11-23 23:44:25,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:25,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403516536] [2024-11-23 23:44:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403516536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948991999] [2024-11-23 23:44:26,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:26,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:26,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:26,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:44:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:26,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-23 23:44:26,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:27,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:44:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948991999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:44:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-23 23:44:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021815128] [2024-11-23 23:44:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:27,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:27,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:27,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:44:27,009 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:27,255 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-23 23:44:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-23 23:44:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:27,257 INFO L225 Difference]: With dead ends: 155 [2024-11-23 23:44:27,257 INFO L226 Difference]: Without dead ends: 99 [2024-11-23 23:44:27,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:44:27,258 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 106 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:27,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 69 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-23 23:44:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2024-11-23 23:44:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 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) [2024-11-23 23:44:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-23 23:44:27,271 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 49 [2024-11-23 23:44:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:27,271 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-23 23:44:27,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-23 23:44:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-23 23:44:27,276 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:27,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:27,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:27,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:27,477 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:27,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1274866513, now seen corresponding path program 1 times [2024-11-23 23:44:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622241317] [2024-11-23 23:44:27,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:28,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:28,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622241317] [2024-11-23 23:44:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622241317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008718276] [2024-11-23 23:44:28,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:28,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:28,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:28,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:44:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:28,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 23:44:28,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:28,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008718276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:29,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:29,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2024-11-23 23:44:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138772096] [2024-11-23 23:44:29,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:29,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:44:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:29,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:44:29,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:44:29,251 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 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) [2024-11-23 23:44:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:29,814 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2024-11-23 23:44:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:44:29,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 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) Word has length 50 [2024-11-23 23:44:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:29,816 INFO L225 Difference]: With dead ends: 191 [2024-11-23 23:44:29,816 INFO L226 Difference]: Without dead ends: 135 [2024-11-23 23:44:29,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:44:29,820 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 365 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:29,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 195 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:44:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-23 23:44:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2024-11-23 23:44:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2024-11-23 23:44:29,833 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 50 [2024-11-23 23:44:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:29,833 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2024-11-23 23:44:29,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 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) [2024-11-23 23:44:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2024-11-23 23:44:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-23 23:44:29,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:29,834 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:29,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:30,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:30,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 936178296, now seen corresponding path program 1 times [2024-11-23 23:44:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740426065] [2024-11-23 23:44:30,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:44:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:31,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740426065] [2024-11-23 23:44:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740426065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:31,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848833677] [2024-11-23 23:44:31,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:31,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:31,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:31,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:31,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:44:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:31,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-23 23:44:31,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:31,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:33,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848833677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:33,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:33,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2024-11-23 23:44:33,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341937100] [2024-11-23 23:44:33,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:33,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:44:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:33,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:44:33,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:44:33,227 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 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) [2024-11-23 23:44:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:34,921 INFO L93 Difference]: Finished difference Result 178 states and 231 transitions. [2024-11-23 23:44:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-23 23:44:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-23 23:44:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:34,923 INFO L225 Difference]: With dead ends: 178 [2024-11-23 23:44:34,924 INFO L226 Difference]: Without dead ends: 122 [2024-11-23 23:44:34,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=357, Invalid=1899, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 23:44:34,925 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 217 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:34,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 229 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:44:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-23 23:44:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 111. [2024-11-23 23:44:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.309090909090909) internal successors, (144), 110 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-11-23 23:44:34,937 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 51 [2024-11-23 23:44:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:34,937 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-11-23 23:44:34,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 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) [2024-11-23 23:44:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-11-23 23:44:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:44:34,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:34,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:34,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:44:35,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:35,139 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:35,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:35,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1249252173, now seen corresponding path program 1 times [2024-11-23 23:44:35,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:35,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492140757] [2024-11-23 23:44:35,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:35,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:36,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:36,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492140757] [2024-11-23 23:44:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492140757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:36,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317290062] [2024-11-23 23:44:36,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:36,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:36,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:36,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:44:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:36,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 23:44:36,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:36,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317290062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2024-11-23 23:44:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408268307] [2024-11-23 23:44:37,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:37,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 23:44:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:37,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 23:44:37,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:44:37,748 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:39,977 INFO L93 Difference]: Finished difference Result 432 states and 557 transitions. [2024-11-23 23:44:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-23 23:44:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-23 23:44:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:39,981 INFO L225 Difference]: With dead ends: 432 [2024-11-23 23:44:39,981 INFO L226 Difference]: Without dead ends: 372 [2024-11-23 23:44:39,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=613, Invalid=3547, Unknown=0, NotChecked=0, Total=4160 [2024-11-23 23:44:39,985 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 531 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:39,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 665 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 23:44:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-23 23:44:40,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 227. [2024-11-23 23:44:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.323008849557522) internal successors, (299), 226 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2024-11-23 23:44:40,005 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 70 [2024-11-23 23:44:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:40,006 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2024-11-23 23:44:40,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.903225806451613) internal successors, (183), 31 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2024-11-23 23:44:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 23:44:40,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:40,010 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:40,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:44:40,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:40,211 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:40,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1191344208, now seen corresponding path program 1 times [2024-11-23 23:44:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470403454] [2024-11-23 23:44:40,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:40,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:44:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470403454] [2024-11-23 23:44:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470403454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:41,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:41,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498385842] [2024-11-23 23:44:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:41,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:41,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:41,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:41,601 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2024-11-23 23:44:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:41,818 INFO L93 Difference]: Finished difference Result 394 states and 522 transitions. [2024-11-23 23:44:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 71 [2024-11-23 23:44:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:41,820 INFO L225 Difference]: With dead ends: 394 [2024-11-23 23:44:41,820 INFO L226 Difference]: Without dead ends: 216 [2024-11-23 23:44:41,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:44:41,821 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:41,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 73 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-23 23:44:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-23 23:44:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3209302325581396) internal successors, (284), 215 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2024-11-23 23:44:41,829 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 71 [2024-11-23 23:44:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:41,829 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2024-11-23 23:44:41,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2024-11-23 23:44:41,830 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2024-11-23 23:44:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-23 23:44:41,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:41,833 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:41,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:44:41,834 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:41,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1675724371, now seen corresponding path program 1 times [2024-11-23 23:44:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095273036] [2024-11-23 23:44:41,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095273036] [2024-11-23 23:44:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095273036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517579387] [2024-11-23 23:44:43,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:43,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:43,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:43,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:43,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:44:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:43,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-23 23:44:43,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:44,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517579387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:45,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:45,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2024-11-23 23:44:45,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471363016] [2024-11-23 23:44:45,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:45,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 23:44:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:45,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 23:44:45,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 23:44:45,876 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:47,698 INFO L93 Difference]: Finished difference Result 930 states and 1224 transitions. [2024-11-23 23:44:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-23 23:44:47,699 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-23 23:44:47,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:47,702 INFO L225 Difference]: With dead ends: 930 [2024-11-23 23:44:47,702 INFO L226 Difference]: Without dead ends: 763 [2024-11-23 23:44:47,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=587, Invalid=3195, Unknown=0, NotChecked=0, Total=3782 [2024-11-23 23:44:47,704 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 466 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:47,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 592 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:44:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-23 23:44:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 533. [2024-11-23 23:44:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.330827067669173) internal successors, (708), 532 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 708 transitions. [2024-11-23 23:44:47,726 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 708 transitions. Word has length 72 [2024-11-23 23:44:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:47,726 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 708 transitions. [2024-11-23 23:44:47,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.894736842105263) internal successors, (186), 38 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 708 transitions. [2024-11-23 23:44:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-23 23:44:47,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:47,728 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:47,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:44:47,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:44:47,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:47,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1198648893, now seen corresponding path program 1 times [2024-11-23 23:44:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432727719] [2024-11-23 23:44:47,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432727719] [2024-11-23 23:44:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432727719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767169406] [2024-11-23 23:44:48,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:48,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:48,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:48,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:48,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:44:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:48,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 23:44:48,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:49,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:44:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767169406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:49,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 24 [2024-11-23 23:44:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951469206] [2024-11-23 23:44:49,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:49,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 23:44:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:49,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 23:44:49,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:44:49,737 INFO L87 Difference]: Start difference. First operand 533 states and 708 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 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) [2024-11-23 23:44:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:50,758 INFO L93 Difference]: Finished difference Result 1420 states and 1904 transitions. [2024-11-23 23:44:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:44:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 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 73 [2024-11-23 23:44:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:50,762 INFO L225 Difference]: With dead ends: 1420 [2024-11-23 23:44:50,762 INFO L226 Difference]: Without dead ends: 927 [2024-11-23 23:44:50,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 23:44:50,764 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 163 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:50,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 446 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:44:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-23 23:44:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 880. [2024-11-23 23:44:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.3378839590443685) internal successors, (1176), 879 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1176 transitions. [2024-11-23 23:44:50,804 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1176 transitions. Word has length 73 [2024-11-23 23:44:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:50,804 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1176 transitions. [2024-11-23 23:44:50,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 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) [2024-11-23 23:44:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1176 transitions. [2024-11-23 23:44:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-23 23:44:50,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:50,806 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:50,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:44:51,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 23:44:51,010 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:51,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1033696741, now seen corresponding path program 1 times [2024-11-23 23:44:51,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766778255] [2024-11-23 23:44:51,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:44:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766778255] [2024-11-23 23:44:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766778255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:44:51,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:44:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:44:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727482348] [2024-11-23 23:44:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:44:51,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:44:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:51,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:44:51,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:44:51,610 INFO L87 Difference]: Start difference. First operand 880 states and 1176 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-11-23 23:44:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:51,826 INFO L93 Difference]: Finished difference Result 1722 states and 2305 transitions. [2024-11-23 23:44:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:44:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-23 23:44:51,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:51,830 INFO L225 Difference]: With dead ends: 1722 [2024-11-23 23:44:51,830 INFO L226 Difference]: Without dead ends: 882 [2024-11-23 23:44:51,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:44:51,837 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:51,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 72 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:44:51,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-11-23 23:44:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2024-11-23 23:44:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.337116912599319) internal successors, (1178), 881 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1178 transitions. [2024-11-23 23:44:51,870 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1178 transitions. Word has length 74 [2024-11-23 23:44:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:51,870 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1178 transitions. [2024-11-23 23:44:51,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-11-23 23:44:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1178 transitions. [2024-11-23 23:44:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:44:51,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:51,875 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:51,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:44:51,875 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:51,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash 154887636, now seen corresponding path program 2 times [2024-11-23 23:44:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493136598] [2024-11-23 23:44:51,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:44:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:52,081 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:44:52,081 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:44:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 66 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 23:44:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493136598] [2024-11-23 23:44:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493136598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483580248] [2024-11-23 23:44:52,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:44:52,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:52,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:52,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:52,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:44:53,259 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:44:53,259 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:44:53,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 23:44:53,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 23:44:53,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 23:44:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483580248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:44:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:44:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-23 23:44:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332511896] [2024-11-23 23:44:54,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:44:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:44:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:44:54,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:44:54,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:44:54,150 INFO L87 Difference]: Start difference. First operand 882 states and 1178 transitions. Second operand has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:54,760 INFO L93 Difference]: Finished difference Result 2290 states and 3061 transitions. [2024-11-23 23:44:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:44:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-23 23:44:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:54,766 INFO L225 Difference]: With dead ends: 2290 [2024-11-23 23:44:54,766 INFO L226 Difference]: Without dead ends: 1450 [2024-11-23 23:44:54,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:44:54,770 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 242 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:54,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 420 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:44:54,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2024-11-23 23:44:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1394. [2024-11-23 23:44:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.3237616654702082) internal successors, (1844), 1393 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1844 transitions. [2024-11-23 23:44:54,815 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1844 transitions. Word has length 91 [2024-11-23 23:44:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:54,815 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1844 transitions. [2024-11-23 23:44:54,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:44:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1844 transitions. [2024-11-23 23:44:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-23 23:44:54,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:54,820 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:54,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:44:55,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:44:55,021 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:44:55,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1840237430, now seen corresponding path program 3 times [2024-11-23 23:44:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:44:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925361548] [2024-11-23 23:44:55,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:44:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:44:55,297 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 23:44:55,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:44:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 23:44:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:44:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925361548] [2024-11-23 23:44:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925361548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329195154] [2024-11-23 23:44:56,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:44:56,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:56,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:56,891 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:56,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:44:57,313 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 23:44:57,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:44:57,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-23 23:44:57,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 23:44:58,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 23:45:00,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329195154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:00,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:00,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 16] total 34 [2024-11-23 23:45:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517953644] [2024-11-23 23:45:00,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:00,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-23 23:45:00,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:00,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-23 23:45:00,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:45:00,356 INFO L87 Difference]: Start difference. First operand 1394 states and 1844 transitions. Second operand has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:05,307 INFO L93 Difference]: Finished difference Result 4383 states and 5820 transitions. [2024-11-23 23:45:05,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-23 23:45:05,307 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-23 23:45:05,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:05,316 INFO L225 Difference]: With dead ends: 4383 [2024-11-23 23:45:05,316 INFO L226 Difference]: Without dead ends: 2927 [2024-11-23 23:45:05,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=945, Invalid=7985, Unknown=0, NotChecked=0, Total=8930 [2024-11-23 23:45:05,320 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 556 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:05,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1056 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:45:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2024-11-23 23:45:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2811. [2024-11-23 23:45:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.291814946619217) internal successors, (3630), 2810 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3630 transitions. [2024-11-23 23:45:05,400 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3630 transitions. Word has length 92 [2024-11-23 23:45:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:05,400 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 3630 transitions. [2024-11-23 23:45:05,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.176470588235294) internal successors, (210), 34 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3630 transitions. [2024-11-23 23:45:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-23 23:45:05,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:05,402 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:05,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:45:05,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:45:05,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:05,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1448479113, now seen corresponding path program 2 times [2024-11-23 23:45:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:05,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825933564] [2024-11-23 23:45:05,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:05,914 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:45:05,914 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 43 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 23:45:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:06,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825933564] [2024-11-23 23:45:06,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825933564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:06,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244512643] [2024-11-23 23:45:06,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:45:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:06,547 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:06,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:45:07,346 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:45:07,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:07,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-23 23:45:07,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 70 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:45:07,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 23:45:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244512643] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:08,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:45:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 9] total 23 [2024-11-23 23:45:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162340817] [2024-11-23 23:45:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:45:08,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:45:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:08,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:45:08,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:45:08,431 INFO L87 Difference]: Start difference. First operand 2811 states and 3630 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:08,929 INFO L93 Difference]: Finished difference Result 6441 states and 8274 transitions. [2024-11-23 23:45:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:45:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-23 23:45:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:08,939 INFO L225 Difference]: With dead ends: 6441 [2024-11-23 23:45:08,939 INFO L226 Difference]: Without dead ends: 3613 [2024-11-23 23:45:08,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:45:08,944 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:08,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 282 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:45:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3613 states. [2024-11-23 23:45:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3613 to 3535. [2024-11-23 23:45:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 1.2795698924731183) internal successors, (4522), 3534 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 4522 transitions. [2024-11-23 23:45:09,052 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 4522 transitions. Word has length 94 [2024-11-23 23:45:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:09,053 INFO L471 AbstractCegarLoop]: Abstraction has 3535 states and 4522 transitions. [2024-11-23 23:45:09,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 4522 transitions. [2024-11-23 23:45:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-23 23:45:09,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:45:09,055 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:09,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:09,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:45:09,256 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:45:09,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:45:09,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1878894513, now seen corresponding path program 3 times [2024-11-23 23:45:09,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:45:09,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228229453] [2024-11-23 23:45:09,257 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:45:09,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:45:09,404 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:45:09,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:45:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:45:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228229453] [2024-11-23 23:45:10,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228229453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:10,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010733218] [2024-11-23 23:45:10,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:45:10,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:45:10,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:45:10,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:45:11,318 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:45:11,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:45:11,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-23 23:45:11,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:45:12,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 23:45:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010733218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:45:13,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:45:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 29 [2024-11-23 23:45:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515621428] [2024-11-23 23:45:13,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:13,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 23:45:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:45:13,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 23:45:13,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:45:13,414 INFO L87 Difference]: Start difference. First operand 3535 states and 4522 transitions. Second operand has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:45:14,342 INFO L93 Difference]: Finished difference Result 3602 states and 4597 transitions. [2024-11-23 23:45:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:45:14,343 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-23 23:45:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:45:14,343 INFO L225 Difference]: With dead ends: 3602 [2024-11-23 23:45:14,343 INFO L226 Difference]: Without dead ends: 0 [2024-11-23 23:45:14,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:45:14,346 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:45:14,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 186 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:45:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-23 23:45:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-23 23:45:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-23 23:45:14,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-11-23 23:45:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:45:14,348 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 23:45:14,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.551724137931035) internal successors, (161), 29 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:45:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-23 23:45:14,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-23 23:45:14,351 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 23:45:14,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:45:14,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:45:14,554 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:45:14,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-23 23:45:14,651 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 23:45:14,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:45:14 BoogieIcfgContainer [2024-11-23 23:45:14,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 23:45:14,662 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 23:45:14,662 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 23:45:14,663 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 23:45:14,663 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:21" (3/4) ... [2024-11-23 23:45:14,665 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-23 23:45:14,682 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-23 23:45:14,683 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-23 23:45:14,683 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-23 23:45:14,684 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-23 23:45:14,782 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 23:45:14,783 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 23:45:14,783 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 23:45:14,784 INFO L158 Benchmark]: Toolchain (without parser) took 54248.67ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 92.7MB in the beginning and 524.1MB in the end (delta: -431.4MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,784 INFO L158 Benchmark]: CDTParser took 1.62ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:45:14,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.73ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 77.8MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.37ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 72.0MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:45:14,785 INFO L158 Benchmark]: Boogie Preprocessor took 72.96ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 68.3MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,785 INFO L158 Benchmark]: RCFGBuilder took 925.29ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 86.9MB in the end (delta: -18.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,786 INFO L158 Benchmark]: TraceAbstraction took 52701.10ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 86.4MB in the beginning and 532.3MB in the end (delta: -445.9MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,786 INFO L158 Benchmark]: Witness Printer took 120.70ms. Allocated memory is still 629.1MB. Free memory was 532.3MB in the beginning and 524.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:45:14,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.62ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.73ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 77.8MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.37ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 72.0MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.96ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 68.3MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 925.29ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 86.9MB in the end (delta: -18.8MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. * TraceAbstraction took 52701.10ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 86.4MB in the beginning and 532.3MB in the end (delta: -445.9MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Witness Printer took 120.70ms. Allocated memory is still 629.1MB. Free memory was 532.3MB in the beginning and 524.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3400 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3400 mSDsluCounter, 6160 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5170 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11356 IncrementalHoareTripleChecker+Invalid, 11476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 990 mSDtfsCounter, 11356 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1774 GetRequests, 1323 SyntacticMatches, 2 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3535occurred in iteration=18, InterpolantAutomatonStates: 284, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 759 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 1813 NumberOfCodeBlocks, 1687 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2463 ConstructedInterpolants, 0 QuantifiedInterpolants, 20439 SizeOfPredicates, 43 NumberOfNonLiveVariables, 5122 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 38 InterpolantComputations, 11 PerfectInterpolantSequences, 1460/1811 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: ((((((((var_12 == 1) && (state_28 == 0)) && (state_8 == 0)) && (state_60 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2024-11-23 23:45:14,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1bfcd8-e13e-4ac5-b698-f138a2c03e2a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE