./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/in-de32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/in-de32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:16:49,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:16:49,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:16:49,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:16:49,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:16:49,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:16:49,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:16:49,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:16:49,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:16:49,971 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:16:49,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:16:49,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:16:49,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:16:49,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:16:49,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:16:49,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:16:49,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:16:49,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:16:49,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:16:49,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:16:49,973 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:16:49,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:16:49,974 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:16:49,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:16:49,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:16:49,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:16:49,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:49,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:49,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:16:49,975 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:16:49,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:16:49,976 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_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 [2024-11-27 23:16:50,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:16:50,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:16:50,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:16:50,301 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:16:50,301 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:16:50,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-27 23:16:53,424 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/data/e2bcd7587/15ae20b74ead4299a37975abc56a04b2/FLAG9a0288712 [2024-11-27 23:16:53,675 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:16:53,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-27 23:16:53,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/data/e2bcd7587/15ae20b74ead4299a37975abc56a04b2/FLAG9a0288712 [2024-11-27 23:16:53,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/data/e2bcd7587/15ae20b74ead4299a37975abc56a04b2 [2024-11-27 23:16:53,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:16:53,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:16:53,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:16:53,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:16:53,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:16:53,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7dd110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53, skipping insertion in model container [2024-11-27 23:16:53,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:16:53,879 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_fbe67458-731a-4ef4-a650-f23f8cf945f0/sv-benchmarks/c/loops-crafted-1/in-de32.c[368,381] [2024-11-27 23:16:53,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:53,907 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:16:53,919 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_fbe67458-731a-4ef4-a650-f23f8cf945f0/sv-benchmarks/c/loops-crafted-1/in-de32.c[368,381] [2024-11-27 23:16:53,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:16:53,944 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:16:53,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53 WrapperNode [2024-11-27 23:16:53,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:16:53,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:53,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:16:53,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:16:53,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,978 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-27 23:16:53,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:16:53,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:16:53,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:16:53,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:16:53,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:53,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,004 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]. [2024-11-27 23:16:54,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,009 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:16:54,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:16:54,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:16:54,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:16:54,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (1/1) ... [2024-11-27 23:16:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:16:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:54,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:16:54,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:16:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:16:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:16:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:16:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:16:54,190 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:16:54,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:16:54,345 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-27 23:16:54,345 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:16:54,353 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:16:54,354 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 23:16:54,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:54 BoogieIcfgContainer [2024-11-27 23:16:54,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:16:54,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:16:54,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:16:54,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:16:54,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:16:53" (1/3) ... [2024-11-27 23:16:54,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345cbeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:54, skipping insertion in model container [2024-11-27 23:16:54,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:16:53" (2/3) ... [2024-11-27 23:16:54,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345cbeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:16:54, skipping insertion in model container [2024-11-27 23:16:54,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:16:54" (3/3) ... [2024-11-27 23:16:54,364 INFO L128 eAbstractionObserver]: Analyzing ICFG in-de32.c [2024-11-27 23:16:54,381 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:16:54,383 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de32.c that has 1 procedures, 17 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-27 23:16:54,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:16:54,450 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;@5377d74b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:16:54,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:16:54,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:16:54,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:54,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:54,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:54,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash -239412713, now seen corresponding path program 1 times [2024-11-27 23:16:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373783520] [2024-11-27 23:16:54,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373783520] [2024-11-27 23:16:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373783520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:54,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:54,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191778073] [2024-11-27 23:16:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:54,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:54,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:54,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:54,892 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:54,953 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2024-11-27 23:16:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-27 23:16:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:54,962 INFO L225 Difference]: With dead ends: 36 [2024-11-27 23:16:54,963 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 23:16:54,965 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 [2024-11-27 23:16:54,968 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:54,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 23:16:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-11-27 23:16:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-27 23:16:55,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9 [2024-11-27 23:16:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:55,002 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-27 23:16:55,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-27 23:16:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:16:55,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:55,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:55,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:16:55,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:55,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash -225576941, now seen corresponding path program 1 times [2024-11-27 23:16:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:55,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803722377] [2024-11-27 23:16:55,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:55,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:55,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:55,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803722377] [2024-11-27 23:16:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803722377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:16:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830844120] [2024-11-27 23:16:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:55,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:55,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:55,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:16:55,228 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:55,285 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-27 23:16:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-27 23:16:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:55,286 INFO L225 Difference]: With dead ends: 28 [2024-11-27 23:16:55,286 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 23:16:55,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:16:55,288 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:55,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 23:16:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-27 23:16:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-27 23:16:55,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-11-27 23:16:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:55,293 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-27 23:16:55,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-27 23:16:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:16:55,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:55,293 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:55,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:16:55,294 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:55,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash 237070415, now seen corresponding path program 1 times [2024-11-27 23:16:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005777655] [2024-11-27 23:16:55,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:55,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005777655] [2024-11-27 23:16:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005777655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953614931] [2024-11-27 23:16:55,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:55,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:55,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:55,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:16:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:55,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:16:55,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:55,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953614931] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:55,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:16:55,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-11-27 23:16:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093673113] [2024-11-27 23:16:55,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:55,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:55,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:55,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:55,646 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:55,685 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-11-27 23:16:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:16:55,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:55,686 INFO L225 Difference]: With dead ends: 21 [2024-11-27 23:16:55,686 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 23:16:55,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:55,687 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:55,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 23:16:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-11-27 23:16:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-27 23:16:55,692 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2024-11-27 23:16:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:55,693 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-27 23:16:55,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-27 23:16:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:16:55,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:55,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:55,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:16:55,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:55,894 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:55,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2040927017, now seen corresponding path program 1 times [2024-11-27 23:16:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:55,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193080213] [2024-11-27 23:16:55,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193080213] [2024-11-27 23:16:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193080213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122211750] [2024-11-27 23:16:56,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:56,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:56,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:56,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:16:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:56,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:16:56,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:56,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122211750] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:56,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:16:56,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-11-27 23:16:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251022667] [2024-11-27 23:16:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:56,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:16:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:56,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:16:56,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:56,245 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:56,278 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-27 23:16:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:16:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:16:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:56,279 INFO L225 Difference]: With dead ends: 24 [2024-11-27 23:16:56,280 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 23:16:56,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:16:56,281 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:56,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:16:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 23:16:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-27 23:16:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-27 23:16:56,286 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2024-11-27 23:16:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:56,287 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-27 23:16:56,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-11-27 23:16:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 23:16:56,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:56,288 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:56,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:56,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:56,492 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:56,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash 130178259, now seen corresponding path program 1 times [2024-11-27 23:16:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520159370] [2024-11-27 23:16:56,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:56,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:56,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520159370] [2024-11-27 23:16:56,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520159370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:56,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999589115] [2024-11-27 23:16:56,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:56,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:56,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:56,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:56,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:16:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:56,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:16:56,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:56,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999589115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:57,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2024-11-27 23:16:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850044984] [2024-11-27 23:16:57,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:57,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:16:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:57,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:16:57,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:16:57,070 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:57,136 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-27 23:16:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:16:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2024-11-27 23:16:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:57,137 INFO L225 Difference]: With dead ends: 33 [2024-11-27 23:16:57,137 INFO L226 Difference]: Without dead ends: 29 [2024-11-27 23:16:57,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:16:57,139 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:57,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-27 23:16:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2024-11-27 23:16:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-27 23:16:57,145 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2024-11-27 23:16:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:57,145 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-27 23:16:57,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-27 23:16:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:16:57,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:57,146 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:57,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:16:57,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:57,350 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:57,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash -791757361, now seen corresponding path program 2 times [2024-11-27 23:16:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362100197] [2024-11-27 23:16:57,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:57,371 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:57,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:57,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:57,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362100197] [2024-11-27 23:16:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362100197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287035494] [2024-11-27 23:16:57,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:16:57,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:57,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:57,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:57,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:16:57,569 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:16:57,569 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:57,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:16:57,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:57,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287035494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:57,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-27 23:16:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900178329] [2024-11-27 23:16:57,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:57,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:16:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:57,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:16:57,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:16:57,780 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2024-11-27 23:16:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:58,214 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2024-11-27 23:16:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:16:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 17 [2024-11-27 23:16:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:58,215 INFO L225 Difference]: With dead ends: 66 [2024-11-27 23:16:58,215 INFO L226 Difference]: Without dead ends: 48 [2024-11-27 23:16:58,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:16:58,216 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:58,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 77 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:16:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-27 23:16:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2024-11-27 23:16:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-27 23:16:58,234 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2024-11-27 23:16:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:58,234 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-27 23:16:58,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2024-11-27 23:16:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-27 23:16:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-27 23:16:58,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:58,235 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:58,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:16:58,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:58,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:58,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -771485429, now seen corresponding path program 3 times [2024-11-27 23:16:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:58,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703958822] [2024-11-27 23:16:58,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:58,457 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 23:16:58,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:16:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703958822] [2024-11-27 23:16:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703958822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401684766] [2024-11-27 23:16:58,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:16:58,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:58,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:58,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:58,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:16:58,649 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 23:16:58,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:58,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:16:58,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:16:58,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:16:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401684766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:58,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-27 23:16:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550402245] [2024-11-27 23:16:58,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:58,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:16:58,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:58,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:16:58,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:16:58,790 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:59,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:16:59,063 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2024-11-27 23:16:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:16:59,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-27 23:16:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:16:59,066 INFO L225 Difference]: With dead ends: 87 [2024-11-27 23:16:59,066 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 23:16:59,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:16:59,067 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:16:59,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 71 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:16:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 23:16:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 50. [2024-11-27 23:16:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-27 23:16:59,105 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 19 [2024-11-27 23:16:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:59,105 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-27 23:16:59,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-27 23:16:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:16:59,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:59,106 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:59,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:16:59,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:59,307 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:59,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1487206449, now seen corresponding path program 4 times [2024-11-27 23:16:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:59,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328176911] [2024-11-27 23:16:59,307 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:59,321 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:59,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:16:59,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328176911] [2024-11-27 23:16:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328176911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:16:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063087109] [2024-11-27 23:16:59,444 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:16:59,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:16:59,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:16:59,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:16:59,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:16:59,494 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:16:59,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:16:59,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:16:59,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:16:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:16:59,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:16:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:16:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063087109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:16:59,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:16:59,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 13 [2024-11-27 23:16:59,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586034745] [2024-11-27 23:16:59,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:16:59,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:16:59,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:59,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:16:59,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:16:59,690 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:00,007 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-27 23:17:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:17:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-27 23:17:00,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:00,008 INFO L225 Difference]: With dead ends: 85 [2024-11-27 23:17:00,008 INFO L226 Difference]: Without dead ends: 70 [2024-11-27 23:17:00,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:17:00,009 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:00,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 63 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-27 23:17:00,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2024-11-27 23:17:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-27 23:17:00,033 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 21 [2024-11-27 23:17:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:00,033 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-27 23:17:00,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-27 23:17:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:17:00,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:00,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:00,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:00,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:00,238 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1570621071, now seen corresponding path program 5 times [2024-11-27 23:17:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668457275] [2024-11-27 23:17:00,239 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:00,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:00,256 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:17:00,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:17:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668457275] [2024-11-27 23:17:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668457275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671691364] [2024-11-27 23:17:00,487 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:00,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:00,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:17:00,538 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:17:00,538 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:00,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:17:00,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:17:00,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:17:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671691364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:00,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:00,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 10 [2024-11-27 23:17:00,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94859141] [2024-11-27 23:17:00,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:00,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:17:00,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:00,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:17:00,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:17:00,709 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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) [2024-11-27 23:17:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:00,835 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2024-11-27 23:17:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:17:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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 21 [2024-11-27 23:17:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:00,838 INFO L225 Difference]: With dead ends: 128 [2024-11-27 23:17:00,838 INFO L226 Difference]: Without dead ends: 119 [2024-11-27 23:17:00,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:17:00,839 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:00,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 79 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-27 23:17:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 68. [2024-11-27 23:17:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 67 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:00,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2024-11-27 23:17:00,892 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 21 [2024-11-27 23:17:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:00,892 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2024-11-27 23:17:00,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 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) [2024-11-27 23:17:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2024-11-27 23:17:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:17:00,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:00,893 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:01,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:01,094 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:01,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2117260661, now seen corresponding path program 6 times [2024-11-27 23:17:01,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:01,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164694824] [2024-11-27 23:17:01,095 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:01,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:01,113 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-27 23:17:01,114 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:17:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164694824] [2024-11-27 23:17:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164694824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874141901] [2024-11-27 23:17:01,265 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:01,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:01,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:01,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:01,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:17:01,313 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-27 23:17:01,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:01,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:17:01,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:17:01,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:17:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874141901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:01,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-27 23:17:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541023640] [2024-11-27 23:17:01,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:01,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:17:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:01,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:17:01,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:17:01,592 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:01,894 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2024-11-27 23:17:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:17:01,895 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 23:17:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:01,895 INFO L225 Difference]: With dead ends: 102 [2024-11-27 23:17:01,895 INFO L226 Difference]: Without dead ends: 85 [2024-11-27 23:17:01,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:17:01,897 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:01,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 120 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:17:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-27 23:17:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 56. [2024-11-27 23:17:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-27 23:17:01,919 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 23 [2024-11-27 23:17:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:01,919 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-27 23:17:01,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-27 23:17:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 23:17:01,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:01,920 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:01,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:02,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:02,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:02,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash -877647877, now seen corresponding path program 7 times [2024-11-27 23:17:02,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883482018] [2024-11-27 23:17:02,126 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:02,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:17:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:02,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883482018] [2024-11-27 23:17:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883482018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:02,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751064503] [2024-11-27 23:17:02,346 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:02,348 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:02,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:17:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:02,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:17:02,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:17:02,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751064503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:02,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 6] total 18 [2024-11-27 23:17:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272903173] [2024-11-27 23:17:02,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:02,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:17:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:02,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:17:02,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:17:02,672 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2024-11-27 23:17:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:03,062 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2024-11-27 23:17:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:17:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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 27 [2024-11-27 23:17:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:03,064 INFO L225 Difference]: With dead ends: 121 [2024-11-27 23:17:03,064 INFO L226 Difference]: Without dead ends: 110 [2024-11-27 23:17:03,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:17:03,065 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 73 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:03,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 181 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-27 23:17:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2024-11-27 23:17:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1486486486486487) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-27 23:17:03,101 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2024-11-27 23:17:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:03,101 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-27 23:17:03,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 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) [2024-11-27 23:17:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-27 23:17:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 23:17:03,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:03,106 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:03,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:17:03,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:17:03,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:03,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:03,307 INFO L85 PathProgramCache]: Analyzing trace with hash 734189387, now seen corresponding path program 8 times [2024-11-27 23:17:03,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:03,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913271931] [2024-11-27 23:17:03,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:03,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:03,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:03,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:03,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913271931] [2024-11-27 23:17:03,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913271931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:03,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592695012] [2024-11-27 23:17:03,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:03,576 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:03,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:17:03,630 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:03,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:03,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:17:03,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:03,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592695012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:03,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:03,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-27 23:17:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898635587] [2024-11-27 23:17:03,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:03,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:17:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:03,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:17:03,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:17:03,819 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2024-11-27 23:17:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:03,951 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-11-27 23:17:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:17:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 27 [2024-11-27 23:17:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:03,952 INFO L225 Difference]: With dead ends: 144 [2024-11-27 23:17:03,952 INFO L226 Difference]: Without dead ends: 133 [2024-11-27 23:17:03,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:17:03,953 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:03,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-27 23:17:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 83. [2024-11-27 23:17:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2024-11-27 23:17:03,982 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 27 [2024-11-27 23:17:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:03,983 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2024-11-27 23:17:03,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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) [2024-11-27 23:17:03,983 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2024-11-27 23:17:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:17:03,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:03,984 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:03,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:17:04,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:17:04,185 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:04,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash 962285071, now seen corresponding path program 9 times [2024-11-27 23:17:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:04,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139682448] [2024-11-27 23:17:04,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:04,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:04,205 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:17:04,205 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139682448] [2024-11-27 23:17:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139682448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281478703] [2024-11-27 23:17:04,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:04,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:04,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:04,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:17:04,432 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:17:04,433 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:04,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:17:04,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:04,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:17:04,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281478703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:04,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:04,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 18 [2024-11-27 23:17:04,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294215504] [2024-11-27 23:17:04,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:04,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:17:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:04,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:17:04,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:17:04,698 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:05,202 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2024-11-27 23:17:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:17:05,203 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-27 23:17:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:05,204 INFO L225 Difference]: With dead ends: 127 [2024-11-27 23:17:05,204 INFO L226 Difference]: Without dead ends: 102 [2024-11-27 23:17:05,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:17:05,206 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:05,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 107 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:17:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-27 23:17:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-11-27 23:17:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2024-11-27 23:17:05,254 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 29 [2024-11-27 23:17:05,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:05,254 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2024-11-27 23:17:05,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:05,255 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2024-11-27 23:17:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:17:05,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:05,258 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:05,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:17:05,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:17:05,459 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:05,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash 61800007, now seen corresponding path program 10 times [2024-11-27 23:17:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982387314] [2024-11-27 23:17:05,459 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:05,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:05,474 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:05,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:05,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:05,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982387314] [2024-11-27 23:17:05,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982387314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:05,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703303446] [2024-11-27 23:17:05,623 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:05,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:05,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:05,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:17:05,683 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:05,683 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:05,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 23:17:05,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:05,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:05,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703303446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:05,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:05,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 20 [2024-11-27 23:17:05,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498999840] [2024-11-27 23:17:05,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:05,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:17:05,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:05,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:17:05,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:17:05,999 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:07,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:07,837 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2024-11-27 23:17:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 23:17:07,838 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-27 23:17:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:07,839 INFO L225 Difference]: With dead ends: 163 [2024-11-27 23:17:07,839 INFO L226 Difference]: Without dead ends: 129 [2024-11-27 23:17:07,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=515, Invalid=2791, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 23:17:07,842 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 151 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:07,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 149 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-27 23:17:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2024-11-27 23:17:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 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) [2024-11-27 23:17:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2024-11-27 23:17:07,886 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 29 [2024-11-27 23:17:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:07,886 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2024-11-27 23:17:07,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2024-11-27 23:17:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-27 23:17:07,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:07,887 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:07,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:17:08,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:17:08,088 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:08,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1133989639, now seen corresponding path program 11 times [2024-11-27 23:17:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:08,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235950124] [2024-11-27 23:17:08,089 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:08,110 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:17:08,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235950124] [2024-11-27 23:17:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235950124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888749914] [2024-11-27 23:17:08,350 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:08,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:08,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:17:08,420 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:17:08,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:08,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:17:08,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:08,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:08,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888749914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:08,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-27 23:17:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466315810] [2024-11-27 23:17:08,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:08,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:17:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:08,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:17:08,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:17:08,674 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2024-11-27 23:17:08,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:08,811 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2024-11-27 23:17:08,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:17:08,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 33 [2024-11-27 23:17:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:08,813 INFO L225 Difference]: With dead ends: 137 [2024-11-27 23:17:08,813 INFO L226 Difference]: Without dead ends: 124 [2024-11-27 23:17:08,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 11 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:17:08,814 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:08,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-27 23:17:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2024-11-27 23:17:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2024-11-27 23:17:08,863 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 33 [2024-11-27 23:17:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:08,863 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2024-11-27 23:17:08,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2024-11-27 23:17:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2024-11-27 23:17:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:17:08,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:08,864 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:08,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:17:09,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:17:09,066 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:09,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1395926975, now seen corresponding path program 12 times [2024-11-27 23:17:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:09,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389558603] [2024-11-27 23:17:09,067 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:09,116 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:17:09,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:09,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389558603] [2024-11-27 23:17:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389558603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569927996] [2024-11-27 23:17:09,319 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:09,321 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:09,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:17:09,404 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:17:09,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:09,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:17:09,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:09,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:09,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569927996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:09,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 10] total 23 [2024-11-27 23:17:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675553038] [2024-11-27 23:17:09,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:09,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:17:09,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:09,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:17:09,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:17:09,759 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:11,021 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2024-11-27 23:17:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-27 23:17:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 23:17:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:11,023 INFO L225 Difference]: With dead ends: 177 [2024-11-27 23:17:11,023 INFO L226 Difference]: Without dead ends: 150 [2024-11-27 23:17:11,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1626, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 23:17:11,025 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:11,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 264 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:17:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-27 23:17:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 118. [2024-11-27 23:17:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 117 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2024-11-27 23:17:11,068 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 37 [2024-11-27 23:17:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:11,069 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2024-11-27 23:17:11,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2024-11-27 23:17:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:17:11,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:11,070 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:11,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:11,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:17:11,270 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:11,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:11,271 INFO L85 PathProgramCache]: Analyzing trace with hash -579202049, now seen corresponding path program 13 times [2024-11-27 23:17:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68959323] [2024-11-27 23:17:11,271 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-27 23:17:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:11,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68959323] [2024-11-27 23:17:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68959323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:11,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381458819] [2024-11-27 23:17:11,462 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:11,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:11,465 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:11,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:17:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:11,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:17:11,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:11,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381458819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:11,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:11,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 26 [2024-11-27 23:17:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255642732] [2024-11-27 23:17:11,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:11,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:17:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:11,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:17:11,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:17:11,988 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 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) [2024-11-27 23:17:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:15,723 INFO L93 Difference]: Finished difference Result 230 states and 260 transitions. [2024-11-27 23:17:15,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-27 23:17:15,723 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 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 37 [2024-11-27 23:17:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:15,725 INFO L225 Difference]: With dead ends: 230 [2024-11-27 23:17:15,725 INFO L226 Difference]: Without dead ends: 192 [2024-11-27 23:17:15,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1124, Invalid=7996, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 23:17:15,727 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 292 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:15,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 156 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:17:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-27 23:17:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2024-11-27 23:17:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 139 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 156 transitions. [2024-11-27 23:17:15,761 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 156 transitions. Word has length 37 [2024-11-27 23:17:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:15,761 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 156 transitions. [2024-11-27 23:17:15,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 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) [2024-11-27 23:17:15,761 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 156 transitions. [2024-11-27 23:17:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 23:17:15,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:15,762 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:15,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:15,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:17:15,966 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:15,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash -196704653, now seen corresponding path program 14 times [2024-11-27 23:17:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:15,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434809956] [2024-11-27 23:17:15,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:15,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:15,986 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:15,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:16,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:16,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434809956] [2024-11-27 23:17:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434809956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440680779] [2024-11-27 23:17:16,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:16,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:16,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:16,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:16,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:17:16,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:16,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:16,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 23:17:16,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:17:16,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:17:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440680779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:16,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 10] total 24 [2024-11-27 23:17:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111676987] [2024-11-27 23:17:16,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:16,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:17:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:16,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:17:16,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:17:16,663 INFO L87 Difference]: Start difference. First operand 140 states and 156 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:17,346 INFO L93 Difference]: Finished difference Result 253 states and 288 transitions. [2024-11-27 23:17:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:17:17,347 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 23:17:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:17,348 INFO L225 Difference]: With dead ends: 253 [2024-11-27 23:17:17,348 INFO L226 Difference]: Without dead ends: 247 [2024-11-27 23:17:17,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:17:17,349 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:17,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 268 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-27 23:17:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 145. [2024-11-27 23:17:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.125) internal successors, (162), 144 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2024-11-27 23:17:17,401 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 39 [2024-11-27 23:17:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:17,401 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2024-11-27 23:17:17,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:17,401 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2024-11-27 23:17:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 23:17:17,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:17,402 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:17,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:17,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:17:17,603 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:17,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1955533373, now seen corresponding path program 15 times [2024-11-27 23:17:17,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:17,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772611400] [2024-11-27 23:17:17,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:17,629 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:17:17,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:17:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772611400] [2024-11-27 23:17:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772611400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989887202] [2024-11-27 23:17:17,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:17,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:17,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:17,906 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:17,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:17:17,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:17:17,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:17,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:17:17,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:17:18,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:17:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989887202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:18,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:18,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-27 23:17:18,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313969917] [2024-11-27 23:17:18,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:18,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:17:18,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:18,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:17:18,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:17:18,431 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:18,662 INFO L93 Difference]: Finished difference Result 205 states and 224 transitions. [2024-11-27 23:17:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:17:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 23:17:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:18,664 INFO L225 Difference]: With dead ends: 205 [2024-11-27 23:17:18,664 INFO L226 Difference]: Without dead ends: 190 [2024-11-27 23:17:18,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 15 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:17:18,665 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:18,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-27 23:17:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2024-11-27 23:17:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1210191082802548) internal successors, (176), 157 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2024-11-27 23:17:18,751 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 39 [2024-11-27 23:17:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:18,751 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2024-11-27 23:17:18,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2024-11-27 23:17:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-27 23:17:18,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:18,752 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:18,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:18,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:18,956 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:18,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash -229672773, now seen corresponding path program 16 times [2024-11-27 23:17:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016401528] [2024-11-27 23:17:18,957 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:18,968 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:18,968 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 23:17:19,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016401528] [2024-11-27 23:17:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016401528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227106542] [2024-11-27 23:17:19,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:19,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:19,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:19,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:19,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:17:19,253 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:19,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:19,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:17:19,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 23:17:19,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-27 23:17:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227106542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:19,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-11-27 23:17:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745574751] [2024-11-27 23:17:19,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:19,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:17:19,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:19,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:17:19,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:17:19,997 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:21,399 INFO L93 Difference]: Finished difference Result 291 states and 320 transitions. [2024-11-27 23:17:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-27 23:17:21,400 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-27 23:17:21,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:21,402 INFO L225 Difference]: With dead ends: 291 [2024-11-27 23:17:21,402 INFO L226 Difference]: Without dead ends: 260 [2024-11-27 23:17:21,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=646, Invalid=2546, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 23:17:21,403 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 213 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:21,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 197 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:17:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-27 23:17:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 148. [2024-11-27 23:17:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.1156462585034013) internal successors, (164), 147 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2024-11-27 23:17:21,485 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 43 [2024-11-27 23:17:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:21,486 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2024-11-27 23:17:21,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2024-11-27 23:17:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-27 23:17:21,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:21,487 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:21,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:21,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:21,691 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:21,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2056614783, now seen corresponding path program 17 times [2024-11-27 23:17:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078177728] [2024-11-27 23:17:21,692 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:21,721 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 23:17:21,722 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:22,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078177728] [2024-11-27 23:17:22,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078177728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009398041] [2024-11-27 23:17:22,027 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:17:22,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:22,030 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:22,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:17:22,144 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 23:17:22,145 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:22,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:17:22,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:22,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:22,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009398041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:22,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:22,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-11-27 23:17:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264052498] [2024-11-27 23:17:22,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:22,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:17:22,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:22,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:17:22,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:17:22,486 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:22,831 INFO L93 Difference]: Finished difference Result 249 states and 273 transitions. [2024-11-27 23:17:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:17:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-27 23:17:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:22,834 INFO L225 Difference]: With dead ends: 249 [2024-11-27 23:17:22,834 INFO L226 Difference]: Without dead ends: 232 [2024-11-27 23:17:22,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 78 SyntacticMatches, 17 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:17:22,835 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:22,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 230 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:17:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-27 23:17:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 173. [2024-11-27 23:17:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.1337209302325582) internal successors, (195), 172 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 195 transitions. [2024-11-27 23:17:22,948 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 195 transitions. Word has length 45 [2024-11-27 23:17:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:22,948 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 195 transitions. [2024-11-27 23:17:22,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 195 transitions. [2024-11-27 23:17:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 23:17:22,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:22,949 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:22,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:23,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:23,154 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:23,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2088851653, now seen corresponding path program 18 times [2024-11-27 23:17:23,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:23,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003234103] [2024-11-27 23:17:23,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:23,206 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:17:23,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:17:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003234103] [2024-11-27 23:17:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003234103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462187002] [2024-11-27 23:17:23,544 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:17:23,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:23,546 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:23,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:17:23,633 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:17:23,633 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:23,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:17:23,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:23,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-27 23:17:24,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462187002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:24,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:24,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 12] total 28 [2024-11-27 23:17:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072222805] [2024-11-27 23:17:24,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:24,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:17:24,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:24,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:17:24,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:17:24,195 INFO L87 Difference]: Start difference. First operand 173 states and 195 transitions. Second operand has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 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) [2024-11-27 23:17:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:26,235 INFO L93 Difference]: Finished difference Result 253 states and 282 transitions. [2024-11-27 23:17:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 23:17:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 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 47 [2024-11-27 23:17:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:26,240 INFO L225 Difference]: With dead ends: 253 [2024-11-27 23:17:26,240 INFO L226 Difference]: Without dead ends: 201 [2024-11-27 23:17:26,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=531, Invalid=2661, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 23:17:26,243 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 97 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:26,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 351 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:17:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-27 23:17:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2024-11-27 23:17:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.1055555555555556) internal successors, (199), 180 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 199 transitions. [2024-11-27 23:17:26,325 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 199 transitions. Word has length 47 [2024-11-27 23:17:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:26,325 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 199 transitions. [2024-11-27 23:17:26,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 28 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) [2024-11-27 23:17:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 199 transitions. [2024-11-27 23:17:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 23:17:26,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:26,326 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:26,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:17:26,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:26,530 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -30252165, now seen corresponding path program 19 times [2024-11-27 23:17:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204412246] [2024-11-27 23:17:26,531 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204412246] [2024-11-27 23:17:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204412246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442472184] [2024-11-27 23:17:26,814 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:17:26,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:26,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:26,817 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:26,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:17:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:17:26,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 23:17:26,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:26,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:17:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442472184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:27,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 32 [2024-11-27 23:17:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846188377] [2024-11-27 23:17:27,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:27,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:17:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:27,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:17:27,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:17:27,410 INFO L87 Difference]: Start difference. First operand 181 states and 199 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:37,658 INFO L93 Difference]: Finished difference Result 363 states and 405 transitions. [2024-11-27 23:17:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-27 23:17:37,659 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-27 23:17:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:37,660 INFO L225 Difference]: With dead ends: 363 [2024-11-27 23:17:37,660 INFO L226 Difference]: Without dead ends: 293 [2024-11-27 23:17:37,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6558 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2881, Invalid=17141, Unknown=0, NotChecked=0, Total=20022 [2024-11-27 23:17:37,665 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 615 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:37,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 289 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:17:37,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-27 23:17:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 215. [2024-11-27 23:17:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0981308411214954) internal successors, (235), 214 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 235 transitions. [2024-11-27 23:17:37,788 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 235 transitions. Word has length 47 [2024-11-27 23:17:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:37,788 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 235 transitions. [2024-11-27 23:17:37,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 235 transitions. [2024-11-27 23:17:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 23:17:37,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:37,790 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:37,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:17:37,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:37,994 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:37,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:37,994 INFO L85 PathProgramCache]: Analyzing trace with hash 219969251, now seen corresponding path program 20 times [2024-11-27 23:17:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541041498] [2024-11-27 23:17:37,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:38,022 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:38,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:17:38,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541041498] [2024-11-27 23:17:38,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541041498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:38,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239821644] [2024-11-27 23:17:38,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:17:38,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:38,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:38,441 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:38,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:17:38,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:17:38,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:38,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 23:17:38,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:17:38,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:17:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239821644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:39,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 12] total 35 [2024-11-27 23:17:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308250534] [2024-11-27 23:17:39,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:39,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 23:17:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:39,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 23:17:39,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:17:39,035 INFO L87 Difference]: Start difference. First operand 215 states and 235 transitions. Second operand has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 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) [2024-11-27 23:17:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:40,919 INFO L93 Difference]: Finished difference Result 383 states and 429 transitions. [2024-11-27 23:17:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-27 23:17:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 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) Word has length 51 [2024-11-27 23:17:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:40,921 INFO L225 Difference]: With dead ends: 383 [2024-11-27 23:17:40,921 INFO L226 Difference]: Without dead ends: 366 [2024-11-27 23:17:40,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1169, Invalid=3253, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 23:17:40,922 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 365 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:40,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 474 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:17:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-27 23:17:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 215. [2024-11-27 23:17:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0934579439252337) internal successors, (234), 214 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 234 transitions. [2024-11-27 23:17:41,004 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 234 transitions. Word has length 51 [2024-11-27 23:17:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:41,004 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 234 transitions. [2024-11-27 23:17:41,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5428571428571427) internal successors, (89), 35 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) [2024-11-27 23:17:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 234 transitions. [2024-11-27 23:17:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-27 23:17:41,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:41,006 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:41,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:17:41,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 23:17:41,210 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:41,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1791320005, now seen corresponding path program 21 times [2024-11-27 23:17:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426134368] [2024-11-27 23:17:41,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:41,263 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:17:41,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426134368] [2024-11-27 23:17:41,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426134368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:41,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742371714] [2024-11-27 23:17:41,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:17:41,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:41,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:41,573 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:17:41,703 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:17:41,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:41,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:17:41,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:41,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:42,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742371714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:42,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:42,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-11-27 23:17:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547273618] [2024-11-27 23:17:42,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:42,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:17:42,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:42,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:17:42,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:17:42,088 INFO L87 Difference]: Start difference. First operand 215 states and 234 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:42,351 INFO L93 Difference]: Finished difference Result 272 states and 294 transitions. [2024-11-27 23:17:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:17:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-27 23:17:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:42,353 INFO L225 Difference]: With dead ends: 272 [2024-11-27 23:17:42,353 INFO L226 Difference]: Without dead ends: 253 [2024-11-27 23:17:42,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:17:42,354 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:42,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 266 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:17:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-27 23:17:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2024-11-27 23:17:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0952380952380953) internal successors, (253), 231 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 253 transitions. [2024-11-27 23:17:42,440 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 253 transitions. Word has length 51 [2024-11-27 23:17:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:17:42,441 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 253 transitions. [2024-11-27 23:17:42,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 253 transitions. [2024-11-27 23:17:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 23:17:42,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:17:42,442 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:17:42,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-27 23:17:42,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:42,642 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:17:42,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:17:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1747233993, now seen corresponding path program 22 times [2024-11-27 23:17:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:17:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327942381] [2024-11-27 23:17:42,643 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:17:42,658 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:42,658 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:42,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:17:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327942381] [2024-11-27 23:17:42,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327942381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:17:42,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482039906] [2024-11-27 23:17:42,956 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:17:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:17:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:17:42,958 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:17:42,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:17:43,025 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:17:43,025 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:17:43,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:17:43,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:17:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:43,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:17:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:17:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482039906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:17:43,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:17:43,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 36 [2024-11-27 23:17:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204990010] [2024-11-27 23:17:43,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:17:43,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 23:17:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:17:43,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 23:17:43,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:17:43,708 INFO L87 Difference]: Start difference. First operand 232 states and 253 transitions. Second operand has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:17:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:17:59,919 INFO L93 Difference]: Finished difference Result 475 states and 518 transitions. [2024-11-27 23:17:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-27 23:17:59,920 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-27 23:17:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:17:59,921 INFO L225 Difference]: With dead ends: 475 [2024-11-27 23:17:59,921 INFO L226 Difference]: Without dead ends: 400 [2024-11-27 23:17:59,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11019 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=4486, Invalid=27020, Unknown=0, NotChecked=0, Total=31506 [2024-11-27 23:17:59,927 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 898 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:17:59,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 266 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:17:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-27 23:18:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 256. [2024-11-27 23:18:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.1019607843137256) internal successors, (281), 255 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2024-11-27 23:18:00,054 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 53 [2024-11-27 23:18:00,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:00,054 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2024-11-27 23:18:00,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:00,054 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2024-11-27 23:18:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 23:18:00,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:00,055 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:00,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:18:00,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:00,256 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:00,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash -776279257, now seen corresponding path program 23 times [2024-11-27 23:18:00,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396383879] [2024-11-27 23:18:00,257 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:18:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:00,305 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-27 23:18:00,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:18:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396383879] [2024-11-27 23:18:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396383879] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725514132] [2024-11-27 23:18:00,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:18:00,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:00,636 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:00,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:18:00,852 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-27 23:18:00,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:00,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-27 23:18:00,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 23:18:01,050 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 11 proven. 50 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:18:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725514132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:01,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 14] total 35 [2024-11-27 23:18:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083831765] [2024-11-27 23:18:01,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:01,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 23:18:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:01,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 23:18:01,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:18:01,475 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 35 states, 35 states have (on average 2.6) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:05,583 INFO L93 Difference]: Finished difference Result 331 states and 369 transitions. [2024-11-27 23:18:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-27 23:18:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-27 23:18:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:05,585 INFO L225 Difference]: With dead ends: 331 [2024-11-27 23:18:05,585 INFO L226 Difference]: Without dead ends: 303 [2024-11-27 23:18:05,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=917, Invalid=5725, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 23:18:05,587 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 145 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:05,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 598 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:18:05,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-27 23:18:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 270. [2024-11-27 23:18:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.0855018587360594) internal successors, (292), 269 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2024-11-27 23:18:05,695 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 57 [2024-11-27 23:18:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:05,695 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2024-11-27 23:18:05,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6) internal successors, (91), 35 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2024-11-27 23:18:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 23:18:05,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:05,696 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:05,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:18:05,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:18:05,897 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:05,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:05,897 INFO L85 PathProgramCache]: Analyzing trace with hash -393858057, now seen corresponding path program 24 times [2024-11-27 23:18:05,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:05,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161504961] [2024-11-27 23:18:05,898 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:18:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:05,934 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 23:18:05,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:06,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:06,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161504961] [2024-11-27 23:18:06,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161504961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:06,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035637907] [2024-11-27 23:18:06,297 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:18:06,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:06,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:06,300 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:06,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:18:06,423 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-27 23:18:06,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:06,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:18:06,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:06,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:06,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035637907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:06,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:06,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-11-27 23:18:06,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638652686] [2024-11-27 23:18:06,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:06,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:18:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:06,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:18:06,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:06,828 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:07,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:07,172 INFO L93 Difference]: Finished difference Result 332 states and 358 transitions. [2024-11-27 23:18:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:18:07,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-27 23:18:07,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:07,173 INFO L225 Difference]: With dead ends: 332 [2024-11-27 23:18:07,173 INFO L226 Difference]: Without dead ends: 311 [2024-11-27 23:18:07,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 19 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:07,174 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:07,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 293 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:18:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-27 23:18:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 287. [2024-11-27 23:18:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.0874125874125875) internal successors, (311), 286 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 311 transitions. [2024-11-27 23:18:07,313 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 311 transitions. Word has length 57 [2024-11-27 23:18:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:07,313 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 311 transitions. [2024-11-27 23:18:07,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 311 transitions. [2024-11-27 23:18:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 23:18:07,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:07,314 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:07,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:18:07,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:07,518 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:07,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1664379379, now seen corresponding path program 25 times [2024-11-27 23:18:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813248861] [2024-11-27 23:18:07,519 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:18:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:07,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:07,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813248861] [2024-11-27 23:18:07,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813248861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:07,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612111161] [2024-11-27 23:18:07,893 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:18:07,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:07,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:07,896 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:07,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:18:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:07,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 23:18:07,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:08,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:18:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612111161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:08,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 40 [2024-11-27 23:18:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713769572] [2024-11-27 23:18:08,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:08,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 23:18:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:08,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 23:18:08,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:18:08,675 INFO L87 Difference]: Start difference. First operand 287 states and 311 transitions. Second operand has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:35,475 INFO L93 Difference]: Finished difference Result 622 states and 677 transitions. [2024-11-27 23:18:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-11-27 23:18:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-27 23:18:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:35,477 INFO L225 Difference]: With dead ends: 622 [2024-11-27 23:18:35,478 INFO L226 Difference]: Without dead ends: 532 [2024-11-27 23:18:35,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17401 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=6685, Invalid=40621, Unknown=0, NotChecked=0, Total=47306 [2024-11-27 23:18:35,482 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1302 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:35,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 357 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:18:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-27 23:18:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 311. [2024-11-27 23:18:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0903225806451613) internal successors, (338), 310 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 338 transitions. [2024-11-27 23:18:35,679 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 338 transitions. Word has length 59 [2024-11-27 23:18:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:35,679 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 338 transitions. [2024-11-27 23:18:35,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 338 transitions. [2024-11-27 23:18:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 23:18:35,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:35,680 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:35,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:35,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:35,881 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:35,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2037518669, now seen corresponding path program 26 times [2024-11-27 23:18:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:35,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39344950] [2024-11-27 23:18:35,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:18:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:35,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:18:35,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39344950] [2024-11-27 23:18:36,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39344950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047134991] [2024-11-27 23:18:36,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:18:36,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:36,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:36,319 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:36,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:18:36,387 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:18:36,387 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:36,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:18:36,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:36,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047134991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:36,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:36,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-11-27 23:18:36,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103425357] [2024-11-27 23:18:36,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:36,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:18:36,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:36,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:18:36,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:18:36,727 INFO L87 Difference]: Start difference. First operand 311 states and 338 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2024-11-27 23:18:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:37,074 INFO L93 Difference]: Finished difference Result 377 states and 409 transitions. [2024-11-27 23:18:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:18:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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 63 [2024-11-27 23:18:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:37,076 INFO L225 Difference]: With dead ends: 377 [2024-11-27 23:18:37,076 INFO L226 Difference]: Without dead ends: 354 [2024-11-27 23:18:37,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 113 SyntacticMatches, 21 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:18:37,077 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:37,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 400 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:18:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-27 23:18:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 328. [2024-11-27 23:18:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.091743119266055) internal successors, (357), 327 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 357 transitions. [2024-11-27 23:18:37,308 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 357 transitions. Word has length 63 [2024-11-27 23:18:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:37,308 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 357 transitions. [2024-11-27 23:18:37,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 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) [2024-11-27 23:18:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 357 transitions. [2024-11-27 23:18:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 23:18:37,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:37,309 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:37,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:18:37,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,513 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:37,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2084705311, now seen corresponding path program 27 times [2024-11-27 23:18:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370101827] [2024-11-27 23:18:37,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:18:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:37,543 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:18:37,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:18:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370101827] [2024-11-27 23:18:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370101827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:37,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443511919] [2024-11-27 23:18:37,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:18:37,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:37,873 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:37,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:18:37,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:18:37,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:37,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:18:37,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:18:38,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:18:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443511919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:38,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 24 [2024-11-27 23:18:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157051848] [2024-11-27 23:18:38,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:38,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:18:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:38,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:18:38,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:18:38,476 INFO L87 Difference]: Start difference. First operand 328 states and 357 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:39,293 INFO L93 Difference]: Finished difference Result 345 states and 374 transitions. [2024-11-27 23:18:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:18:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 23:18:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:39,295 INFO L225 Difference]: With dead ends: 345 [2024-11-27 23:18:39,295 INFO L226 Difference]: Without dead ends: 326 [2024-11-27 23:18:39,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 115 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:18:39,296 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:39,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 220 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:18:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-27 23:18:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 312. [2024-11-27 23:18:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0836012861736335) internal successors, (337), 311 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 337 transitions. [2024-11-27 23:18:39,442 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 337 transitions. Word has length 65 [2024-11-27 23:18:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:39,443 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 337 transitions. [2024-11-27 23:18:39,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:18:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 337 transitions. [2024-11-27 23:18:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 23:18:39,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:39,443 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:39,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:39,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:39,644 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:39,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 537094063, now seen corresponding path program 28 times [2024-11-27 23:18:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:39,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997144688] [2024-11-27 23:18:39,645 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:18:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:39,656 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:18:39,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997144688] [2024-11-27 23:18:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997144688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586525658] [2024-11-27 23:18:40,023 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:18:40,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:40,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:40,025 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:40,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:18:40,086 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:18:40,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:40,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:18:40,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:40,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:18:40,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586525658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:40,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:40,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 44 [2024-11-27 23:18:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717132825] [2024-11-27 23:18:40,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:40,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:18:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:40,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:18:40,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1605, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:18:40,915 INFO L87 Difference]: Start difference. First operand 312 states and 337 transitions. Second operand has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:21,043 INFO L93 Difference]: Finished difference Result 720 states and 790 transitions. [2024-11-27 23:19:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2024-11-27 23:19:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-27 23:19:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:21,046 INFO L225 Difference]: With dead ends: 720 [2024-11-27 23:19:21,046 INFO L226 Difference]: Without dead ends: 617 [2024-11-27 23:19:21,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26243 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=9609, Invalid=58773, Unknown=0, NotChecked=0, Total=68382 [2024-11-27 23:19:21,049 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1562 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:21,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 375 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:19:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-27 23:19:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 320. [2024-11-27 23:19:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.0909090909090908) internal successors, (348), 319 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 348 transitions. [2024-11-27 23:19:21,230 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 348 transitions. Word has length 65 [2024-11-27 23:19:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:21,230 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 348 transitions. [2024-11-27 23:19:21,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 348 transitions. [2024-11-27 23:19:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 23:19:21,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:21,232 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:21,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 23:19:21,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:21,432 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:21,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1867705585, now seen corresponding path program 29 times [2024-11-27 23:19:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208291677] [2024-11-27 23:19:21,433 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:19:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:21,469 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 23:19:21,470 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:19:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208291677] [2024-11-27 23:19:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208291677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667222067] [2024-11-27 23:19:21,884 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:19:21,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:21,889 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:21,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:19:22,226 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 23:19:22,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:22,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-27 23:19:22,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:19:22,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-27 23:19:22,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667222067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:22,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 16] total 42 [2024-11-27 23:19:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963616647] [2024-11-27 23:19:22,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-27 23:19:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:22,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-27 23:19:22,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:19:22,966 INFO L87 Difference]: Start difference. First operand 320 states and 348 transitions. Second operand has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 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) [2024-11-27 23:19:26,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:26,140 INFO L93 Difference]: Finished difference Result 777 states and 851 transitions. [2024-11-27 23:19:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-27 23:19:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 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) Word has length 69 [2024-11-27 23:19:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:26,143 INFO L225 Difference]: With dead ends: 777 [2024-11-27 23:19:26,143 INFO L226 Difference]: Without dead ends: 771 [2024-11-27 23:19:26,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1774, Invalid=4232, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:19:26,144 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 437 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:26,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 906 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:19:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-27 23:19:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 391. [2024-11-27 23:19:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.0846153846153845) internal successors, (423), 390 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 423 transitions. [2024-11-27 23:19:26,379 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 423 transitions. Word has length 69 [2024-11-27 23:19:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:26,379 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 423 transitions. [2024-11-27 23:19:26,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 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) [2024-11-27 23:19:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 423 transitions. [2024-11-27 23:19:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 23:19:26,380 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:26,380 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:26,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-27 23:19:26,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-27 23:19:26,584 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:26,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash 39293039, now seen corresponding path program 30 times [2024-11-27 23:19:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138077984] [2024-11-27 23:19:26,585 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:19:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:26,640 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 23:19:26,640 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:27,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138077984] [2024-11-27 23:19:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138077984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320351249] [2024-11-27 23:19:27,047 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:19:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:27,049 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:27,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 23:19:27,204 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 23:19:27,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:19:27,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 23:19:27,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:27,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320351249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:27,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-27 23:19:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473601719] [2024-11-27 23:19:27,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:27,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:19:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:27,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:19:27,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:19:27,806 INFO L87 Difference]: Start difference. First operand 391 states and 423 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:19:28,350 INFO L93 Difference]: Finished difference Result 485 states and 522 transitions. [2024-11-27 23:19:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:19:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 23:19:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:19:28,352 INFO L225 Difference]: With dead ends: 485 [2024-11-27 23:19:28,352 INFO L226 Difference]: Without dead ends: 460 [2024-11-27 23:19:28,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 24 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:19:28,353 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:19:28,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 458 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:19:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-27 23:19:28,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 410. [2024-11-27 23:19:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.0855745721271393) internal successors, (444), 409 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 444 transitions. [2024-11-27 23:19:28,593 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 444 transitions. Word has length 69 [2024-11-27 23:19:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:19:28,594 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 444 transitions. [2024-11-27 23:19:28,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:19:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 444 transitions. [2024-11-27 23:19:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 23:19:28,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:19:28,595 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:19:28,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-27 23:19:28,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-27 23:19:28,796 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:19:28,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:19:28,796 INFO L85 PathProgramCache]: Analyzing trace with hash 184421483, now seen corresponding path program 31 times [2024-11-27 23:19:28,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:19:28,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164530256] [2024-11-27 23:19:28,796 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:19:28,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164530256] [2024-11-27 23:19:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164530256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576954655] [2024-11-27 23:19:29,312 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:19:29,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:29,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:29,315 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:29,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 23:19:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:29,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 23:19:29,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:29,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:19:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 23:19:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576954655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:19:30,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:19:30,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 48 [2024-11-27 23:19:30,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050437311] [2024-11-27 23:19:30,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:19:30,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 23:19:30,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:19:30,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 23:19:30,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1919, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 23:19:30,350 INFO L87 Difference]: Start difference. First operand 410 states and 444 transitions. Second operand has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:31,497 INFO L93 Difference]: Finished difference Result 912 states and 990 transitions. [2024-11-27 23:20:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2024-11-27 23:20:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-27 23:20:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:31,501 INFO L225 Difference]: With dead ends: 912 [2024-11-27 23:20:31,501 INFO L226 Difference]: Without dead ends: 798 [2024-11-27 23:20:31,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38034 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=13402, Invalid=82388, Unknown=0, NotChecked=0, Total=95790 [2024-11-27 23:20:31,504 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 2061 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:31,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2061 Valid, 468 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:20:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-27 23:20:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 444. [2024-11-27 23:20:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.0880361173814899) internal successors, (482), 443 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 482 transitions. [2024-11-27 23:20:31,787 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 482 transitions. Word has length 71 [2024-11-27 23:20:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:31,787 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 482 transitions. [2024-11-27 23:20:31,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.125) internal successors, (102), 48 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 482 transitions. [2024-11-27 23:20:31,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:20:31,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:31,789 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:31,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:31,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 23:20:31,989 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:31,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1946352211, now seen corresponding path program 32 times [2024-11-27 23:20:31,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:31,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70215732] [2024-11-27 23:20:31,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:31,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:32,007 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:32,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 373 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:20:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70215732] [2024-11-27 23:20:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70215732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104910417] [2024-11-27 23:20:32,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:32,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:32,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:32,592 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:32,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 23:20:32,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:32,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:32,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-27 23:20:32,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 373 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:20:32,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 23:20:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104910417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:33,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 18] total 52 [2024-11-27 23:20:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764518132] [2024-11-27 23:20:33,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:33,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 23:20:33,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:33,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 23:20:33,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=2379, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 23:20:33,693 INFO L87 Difference]: Start difference. First operand 444 states and 482 transitions. Second operand has 52 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 52 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) [2024-11-27 23:20:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:43,734 INFO L93 Difference]: Finished difference Result 570 states and 629 transitions. [2024-11-27 23:20:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2024-11-27 23:20:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 52 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) Word has length 75 [2024-11-27 23:20:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:43,736 INFO L225 Difference]: With dead ends: 570 [2024-11-27 23:20:43,736 INFO L226 Difference]: Without dead ends: 499 [2024-11-27 23:20:43,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6093 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2210, Invalid=20440, Unknown=0, NotChecked=0, Total=22650 [2024-11-27 23:20:43,737 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 280 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 5102 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 5190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 5102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:43,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1229 Invalid, 5190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 5102 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:20:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-27 23:20:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 464. [2024-11-27 23:20:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.0734341252699784) internal successors, (497), 463 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 497 transitions. [2024-11-27 23:20:44,054 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 497 transitions. Word has length 75 [2024-11-27 23:20:44,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:44,054 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 497 transitions. [2024-11-27 23:20:44,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.1153846153846154) internal successors, (110), 52 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) [2024-11-27 23:20:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 497 transitions. [2024-11-27 23:20:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:20:44,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:44,055 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:44,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 23:20:44,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 23:20:44,256 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:44,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:44,256 INFO L85 PathProgramCache]: Analyzing trace with hash -338110165, now seen corresponding path program 33 times [2024-11-27 23:20:44,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:44,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411255167] [2024-11-27 23:20:44,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:44,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-27 23:20:44,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411255167] [2024-11-27 23:20:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411255167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156753461] [2024-11-27 23:20:44,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:44,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:44,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:44,818 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:44,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 23:20:45,032 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-27 23:20:45,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:45,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 23:20:45,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:45,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:45,484 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:45,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156753461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:45,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:45,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-11-27 23:20:45,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970690817] [2024-11-27 23:20:45,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:45,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:20:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:45,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:20:45,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:20:45,486 INFO L87 Difference]: Start difference. First operand 464 states and 497 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:46,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:46,067 INFO L93 Difference]: Finished difference Result 530 states and 569 transitions. [2024-11-27 23:20:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:20:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 23:20:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:46,069 INFO L225 Difference]: With dead ends: 530 [2024-11-27 23:20:46,069 INFO L226 Difference]: Without dead ends: 503 [2024-11-27 23:20:46,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 24 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:20:46,070 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:46,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 493 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:46,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-27 23:20:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 483. [2024-11-27 23:20:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0746887966804979) internal successors, (518), 482 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 518 transitions. [2024-11-27 23:20:46,354 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 518 transitions. Word has length 75 [2024-11-27 23:20:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:46,354 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 518 transitions. [2024-11-27 23:20:46,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 518 transitions. [2024-11-27 23:20:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:20:46,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:46,356 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:46,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 23:20:46,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 23:20:46,556 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:46,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -547056633, now seen corresponding path program 34 times [2024-11-27 23:20:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178658234] [2024-11-27 23:20:46,557 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:46,570 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:46,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:20:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178658234] [2024-11-27 23:20:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178658234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764983531] [2024-11-27 23:20:47,002 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:47,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:47,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:47,007 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:47,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 23:20:47,083 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:47,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:47,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-27 23:20:47,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:47,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-27 23:20:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764983531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:48,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30, 18] total 47 [2024-11-27 23:20:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91620880] [2024-11-27 23:20:48,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:48,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 23:20:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:48,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 23:20:48,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=1591, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 23:20:48,144 INFO L87 Difference]: Start difference. First operand 483 states and 518 transitions. Second operand has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:53,244 INFO L93 Difference]: Finished difference Result 1010 states and 1100 transitions. [2024-11-27 23:20:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-27 23:20:53,245 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 23:20:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:53,247 INFO L225 Difference]: With dead ends: 1010 [2024-11-27 23:20:53,247 INFO L226 Difference]: Without dead ends: 1004 [2024-11-27 23:20:53,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2360 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2607, Invalid=6513, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 23:20:53,248 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 412 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:53,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1212 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:20:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2024-11-27 23:20:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 492. [2024-11-27 23:20:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.075356415478615) internal successors, (528), 491 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:53,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 528 transitions. [2024-11-27 23:20:53,601 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 528 transitions. Word has length 77 [2024-11-27 23:20:53,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:53,601 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 528 transitions. [2024-11-27 23:20:53,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:20:53,601 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 528 transitions. [2024-11-27 23:20:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:20:53,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:53,602 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:53,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 23:20:53,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 23:20:53,802 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:53,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1506416679, now seen corresponding path program 35 times [2024-11-27 23:20:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328646374] [2024-11-27 23:20:53,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:20:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:53,835 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:20:53,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 23 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:54,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328646374] [2024-11-27 23:20:54,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328646374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:54,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40451660] [2024-11-27 23:20:54,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:20:54,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:54,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:54,247 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:54,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 23:20:54,681 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:20:54,681 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:54,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-27 23:20:54,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 23 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:55,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 23 proven. 242 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-27 23:20:56,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40451660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:56,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:56,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 62 [2024-11-27 23:20:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606103950] [2024-11-27 23:20:56,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:56,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 23:20:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:56,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 23:20:56,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3205, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 23:20:56,226 INFO L87 Difference]: Start difference. First operand 492 states and 528 transitions. Second operand has 62 states, 62 states have (on average 2.161290322580645) internal successors, (134), 62 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:10,720 INFO L93 Difference]: Finished difference Result 1000 states and 1071 transitions. [2024-11-27 23:21:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2024-11-27 23:21:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.161290322580645) internal successors, (134), 62 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 23:21:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:10,722 INFO L225 Difference]: With dead ends: 1000 [2024-11-27 23:21:10,722 INFO L226 Difference]: Without dead ends: 947 [2024-11-27 23:21:10,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11006 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=6033, Invalid=27273, Unknown=0, NotChecked=0, Total=33306 [2024-11-27 23:21:10,723 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 676 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:10,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 599 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:21:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2024-11-27 23:21:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 553. [2024-11-27 23:21:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.0778985507246377) internal successors, (595), 552 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 595 transitions. [2024-11-27 23:21:11,164 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 595 transitions. Word has length 77 [2024-11-27 23:21:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 595 transitions. [2024-11-27 23:21:11,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.161290322580645) internal successors, (134), 62 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 595 transitions. [2024-11-27 23:21:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:21:11,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:11,165 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:11,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 23:21:11,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 23:21:11,365 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:11,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1274513639, now seen corresponding path program 36 times [2024-11-27 23:21:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912076356] [2024-11-27 23:21:11,366 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:21:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:11,427 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:21:11,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912076356] [2024-11-27 23:21:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912076356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652960413] [2024-11-27 23:21:11,838 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:21:11,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:11,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:11,840 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:11,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 23:21:12,039 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:21:12,039 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:12,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-27 23:21:12,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:12,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652960413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:12,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2024-11-27 23:21:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086581822] [2024-11-27 23:21:12,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:12,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:21:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:12,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:21:12,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:21:12,528 INFO L87 Difference]: Start difference. First operand 553 states and 595 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:13,698 INFO L93 Difference]: Finished difference Result 939 states and 1007 transitions. [2024-11-27 23:21:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:21:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-27 23:21:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:13,701 INFO L225 Difference]: With dead ends: 939 [2024-11-27 23:21:13,701 INFO L226 Difference]: Without dead ends: 910 [2024-11-27 23:21:13,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 27 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:21:13,702 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:13,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 616 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:21:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-27 23:21:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 622. [2024-11-27 23:21:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 1.0853462157809983) internal successors, (674), 621 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 674 transitions. [2024-11-27 23:21:14,197 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 674 transitions. Word has length 81 [2024-11-27 23:21:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:14,197 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 674 transitions. [2024-11-27 23:21:14,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:21:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 674 transitions. [2024-11-27 23:21:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 23:21:14,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:14,198 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:14,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-27 23:21:14,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 23:21:14,398 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:21:14,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1224914205, now seen corresponding path program 37 times [2024-11-27 23:21:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492920091] [2024-11-27 23:21:14,399 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 25 proven. 288 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492920091] [2024-11-27 23:21:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492920091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:14,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880090833] [2024-11-27 23:21:14,842 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:14,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:14,844 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:14,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 23:21:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:14,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-27 23:21:14,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:15,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-27 23:21:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880090833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:16,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 56 [2024-11-27 23:21:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789343644] [2024-11-27 23:21:16,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:16,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-27 23:21:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:16,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-27 23:21:16,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2631, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:21:16,211 INFO L87 Difference]: Start difference. First operand 622 states and 674 transitions. Second operand has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:33,094 INFO L93 Difference]: Finished difference Result 1331 states and 1448 transitions. [2024-11-27 23:23:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 391 states. [2024-11-27 23:23:33,095 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-27 23:23:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:33,098 INFO L225 Difference]: With dead ends: 1331 [2024-11-27 23:23:33,098 INFO L226 Difference]: Without dead ends: 1125 [2024-11-27 23:23:33,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72946 ImplicationChecksByTransitivity, 133.0s TimeCoverageRelationStatistics Valid=24236, Invalid=150070, Unknown=0, NotChecked=0, Total=174306 [2024-11-27 23:23:33,102 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3260 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3260 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:33,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3260 Valid, 625 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:23:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-27 23:23:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 660. [2024-11-27 23:23:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 1.0819423368740515) internal successors, (713), 659 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 713 transitions. [2024-11-27 23:23:33,688 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 713 transitions. Word has length 83 [2024-11-27 23:23:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:33,688 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 713 transitions. [2024-11-27 23:23:33,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 713 transitions. [2024-11-27 23:23:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:23:33,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:33,689 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:33,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 23:23:33,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-27 23:23:33,890 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:33,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2107955259, now seen corresponding path program 38 times [2024-11-27 23:23:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806722723] [2024-11-27 23:23:33,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:33,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:33,910 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 565 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-27 23:23:34,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806722723] [2024-11-27 23:23:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806722723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:34,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965851021] [2024-11-27 23:23:34,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:23:34,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:34,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:34,664 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:34,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 23:23:34,735 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:23:34,735 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:34,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-27 23:23:34,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 629 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:35,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-27 23:23:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965851021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:36,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:36,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 20] total 62 [2024-11-27 23:23:36,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20535891] [2024-11-27 23:23:36,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:36,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 23:23:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:36,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 23:23:36,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=3058, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 23:23:36,054 INFO L87 Difference]: Start difference. First operand 660 states and 713 transitions. Second operand has 62 states, 62 states have (on average 2.435483870967742) internal successors, (151), 62 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:46,164 INFO L93 Difference]: Finished difference Result 1281 states and 1390 transitions. [2024-11-27 23:23:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-11-27 23:23:46,164 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.435483870967742) internal successors, (151), 62 states have internal predecessors, (151), 0 states have call successors, (0), 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 87 [2024-11-27 23:23:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:46,168 INFO L225 Difference]: With dead ends: 1281 [2024-11-27 23:23:46,168 INFO L226 Difference]: Without dead ends: 1216 [2024-11-27 23:23:46,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10922 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=7758, Invalid=21654, Unknown=0, NotChecked=0, Total=29412 [2024-11-27 23:23:46,170 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 1144 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 5180 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 5180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:46,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1059 Invalid, 5409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 5180 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:23:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2024-11-27 23:23:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 598. [2024-11-27 23:23:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.0787269681742044) internal successors, (644), 597 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 644 transitions. [2024-11-27 23:23:46,653 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 644 transitions. Word has length 87 [2024-11-27 23:23:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:46,653 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 644 transitions. [2024-11-27 23:23:46,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.435483870967742) internal successors, (151), 62 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 644 transitions. [2024-11-27 23:23:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:23:46,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:46,654 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:46,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 23:23:46,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-27 23:23:46,855 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:46,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 545873827, now seen corresponding path program 39 times [2024-11-27 23:23:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291446171] [2024-11-27 23:23:46,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:46,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:46,917 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 23:23:46,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:23:47,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291446171] [2024-11-27 23:23:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291446171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066642862] [2024-11-27 23:23:47,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:47,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:47,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:47,568 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:47,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 23:23:47,868 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-27 23:23:47,868 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:47,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-27 23:23:47,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:23:48,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:23:48,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066642862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:48,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:48,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-11-27 23:23:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5449976] [2024-11-27 23:23:48,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:48,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:23:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:48,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:23:48,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:23:48,470 INFO L87 Difference]: Start difference. First operand 598 states and 644 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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) [2024-11-27 23:23:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:49,395 INFO L93 Difference]: Finished difference Result 721 states and 775 transitions. [2024-11-27 23:23:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:23:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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 87 [2024-11-27 23:23:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:49,397 INFO L225 Difference]: With dead ends: 721 [2024-11-27 23:23:49,397 INFO L226 Difference]: Without dead ends: 690 [2024-11-27 23:23:49,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 156 SyntacticMatches, 30 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:23:49,398 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:49,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 704 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:23:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-27 23:23:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 623. [2024-11-27 23:23:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.0803858520900322) internal successors, (672), 622 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:23:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 672 transitions. [2024-11-27 23:23:50,020 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 672 transitions. Word has length 87 [2024-11-27 23:23:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:50,021 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 672 transitions. [2024-11-27 23:23:50,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 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) [2024-11-27 23:23:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 672 transitions. [2024-11-27 23:23:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 23:23:50,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:50,022 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:50,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 23:23:50,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 23:23:50,223 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:50,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1117494529, now seen corresponding path program 40 times [2024-11-27 23:23:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:50,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167703660] [2024-11-27 23:23:50,223 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:50,234 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:50,234 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 593 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:23:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167703660] [2024-11-27 23:23:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167703660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077746979] [2024-11-27 23:23:50,873 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:50,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:50,874 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:50,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 23:23:50,954 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:50,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:50,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-27 23:23:50,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 593 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:23:51,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 17 proven. 128 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-11-27 23:23:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077746979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:52,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 20] total 62 [2024-11-27 23:23:52,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468224094] [2024-11-27 23:23:52,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:52,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 23:23:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:52,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 23:23:52,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=3438, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 23:23:52,365 INFO L87 Difference]: Start difference. First operand 623 states and 672 transitions. Second operand has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:10,520 INFO L93 Difference]: Finished difference Result 827 states and 904 transitions. [2024-11-27 23:24:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2024-11-27 23:24:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-27 23:24:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:10,522 INFO L225 Difference]: With dead ends: 827 [2024-11-27 23:24:10,523 INFO L226 Difference]: Without dead ends: 696 [2024-11-27 23:24:10,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12059 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=3337, Invalid=38483, Unknown=0, NotChecked=0, Total=41820 [2024-11-27 23:24:10,525 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 406 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 7877 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 8008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 7877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:10,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1959 Invalid, 8008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 7877 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:24:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-27 23:24:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 651. [2024-11-27 23:24:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.0692307692307692) internal successors, (695), 650 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 695 transitions. [2024-11-27 23:24:11,064 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 695 transitions. Word has length 89 [2024-11-27 23:24:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:11,064 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 695 transitions. [2024-11-27 23:24:11,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.096774193548387) internal successors, (130), 62 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 695 transitions. [2024-11-27 23:24:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 23:24:11,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:11,064 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:11,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-27 23:24:11,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:11,265 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:11,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1105369953, now seen corresponding path program 41 times [2024-11-27 23:24:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286414543] [2024-11-27 23:24:11,265 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:11,310 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 23:24:11,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:24:11,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286414543] [2024-11-27 23:24:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286414543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160878144] [2024-11-27 23:24:11,835 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:11,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:11,836 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:11,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 23:24:12,224 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-27 23:24:12,225 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:12,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-27 23:24:12,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:24:12,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 27 proven. 338 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-27 23:24:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160878144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:14,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:14,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 72 [2024-11-27 23:24:14,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256367340] [2024-11-27 23:24:14,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:14,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-27 23:24:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:14,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-27 23:24:14,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=4355, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:24:14,300 INFO L87 Difference]: Start difference. First operand 651 states and 695 transitions. Second operand has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:40,817 INFO L93 Difference]: Finished difference Result 1299 states and 1381 transitions. [2024-11-27 23:24:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-11-27 23:24:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-27 23:24:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:40,819 INFO L225 Difference]: With dead ends: 1299 [2024-11-27 23:24:40,819 INFO L226 Difference]: Without dead ends: 1238 [2024-11-27 23:24:40,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20431 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=10208, Invalid=47632, Unknown=0, NotChecked=0, Total=57840 [2024-11-27 23:24:40,821 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 903 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:40,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 649 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:24:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2024-11-27 23:24:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 697. [2024-11-27 23:24:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.0689655172413792) internal successors, (744), 696 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 744 transitions. [2024-11-27 23:24:41,376 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 744 transitions. Word has length 89 [2024-11-27 23:24:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:41,376 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 744 transitions. [2024-11-27 23:24:41,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 744 transitions. [2024-11-27 23:24:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 23:24:41,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:41,377 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:41,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:41,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:41,578 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:41,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -665576097, now seen corresponding path program 42 times [2024-11-27 23:24:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984547200] [2024-11-27 23:24:41,578 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:24:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:41,653 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 23:24:41,653 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:24:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984547200] [2024-11-27 23:24:42,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984547200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034766545] [2024-11-27 23:24:42,294 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:24:42,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:42,296 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 23:24:42,512 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 23:24:42,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:42,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-27 23:24:42,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:24:42,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:24:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034766545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:43,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 19 [2024-11-27 23:24:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008153869] [2024-11-27 23:24:43,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:43,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:24:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:43,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:24:43,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:24:43,194 INFO L87 Difference]: Start difference. First operand 697 states and 744 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:44,750 INFO L93 Difference]: Finished difference Result 1105 states and 1182 transitions. [2024-11-27 23:24:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:24:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-27 23:24:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:44,754 INFO L225 Difference]: With dead ends: 1105 [2024-11-27 23:24:44,754 INFO L226 Difference]: Without dead ends: 1072 [2024-11-27 23:24:44,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 166 SyntacticMatches, 33 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:24:44,754 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:44,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 797 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:24:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-11-27 23:24:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 776. [2024-11-27 23:24:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.0774193548387097) internal successors, (835), 775 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 835 transitions. [2024-11-27 23:24:45,465 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 835 transitions. Word has length 93 [2024-11-27 23:24:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:45,465 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 835 transitions. [2024-11-27 23:24:45,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:24:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 835 transitions. [2024-11-27 23:24:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 23:24:45,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:45,466 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:45,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-27 23:24:45,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 23:24:45,667 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:24:45,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1237874995, now seen corresponding path program 43 times [2024-11-27 23:24:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:45,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687380639] [2024-11-27 23:24:45,667 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 23:24:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687380639] [2024-11-27 23:24:46,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687380639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804028909] [2024-11-27 23:24:46,477 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:46,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:46,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:46,479 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:46,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 23:24:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:46,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-27 23:24:46,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 0 proven. 757 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:47,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-27 23:24:48,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804028909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:48,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:48,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 22] total 68 [2024-11-27 23:24:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130676549] [2024-11-27 23:24:48,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:48,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-27 23:24:48,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:48,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-27 23:24:48,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=3693, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 23:24:48,138 INFO L87 Difference]: Start difference. First operand 776 states and 835 transitions. Second operand has 68 states, 68 states have (on average 2.426470588235294) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:02,030 INFO L93 Difference]: Finished difference Result 1546 states and 1679 transitions. [2024-11-27 23:25:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-11-27 23:25:02,030 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.426470588235294) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-27 23:25:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:02,033 INFO L225 Difference]: With dead ends: 1546 [2024-11-27 23:25:02,034 INFO L226 Difference]: Without dead ends: 1494 [2024-11-27 23:25:02,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16577 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=11084, Invalid=30736, Unknown=0, NotChecked=0, Total=41820 [2024-11-27 23:25:02,035 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1162 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 7453 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 7619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 7453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:02,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1654 Invalid, 7619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 7453 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:25:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2024-11-27 23:25:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 702. [2024-11-27 23:25:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.072753209700428) internal successors, (752), 701 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 752 transitions. [2024-11-27 23:25:02,656 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 752 transitions. Word has length 95 [2024-11-27 23:25:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:02,656 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 752 transitions. [2024-11-27 23:25:02,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.426470588235294) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:25:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 752 transitions. [2024-11-27 23:25:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 23:25:02,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:02,658 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:02,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-27 23:25:02,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:02,858 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:02,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:02,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2006984027, now seen corresponding path program 44 times [2024-11-27 23:25:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994774827] [2024-11-27 23:25:02,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:02,896 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:25:02,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:25:03,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994774827] [2024-11-27 23:25:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994774827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118870441] [2024-11-27 23:25:03,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:03,630 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 23:25:03,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:25:03,708 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:03,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 23:25:03,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:25:03,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-27 23:25:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118870441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:05,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:05,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-11-27 23:25:05,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516521773] [2024-11-27 23:25:05,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:05,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 23:25:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:05,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 23:25:05,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3455, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:25:05,259 INFO L87 Difference]: Start difference. First operand 702 states and 752 transitions. Second operand has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 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) [2024-11-27 23:29:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:56,674 INFO L93 Difference]: Finished difference Result 1529 states and 1638 transitions. [2024-11-27 23:29:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2024-11-27 23:29:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 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 95 [2024-11-27 23:29:56,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:56,679 INFO L225 Difference]: With dead ends: 1529 [2024-11-27 23:29:56,679 INFO L226 Difference]: Without dead ends: 1342 [2024-11-27 23:29:56,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127506 ImplicationChecksByTransitivity, 283.4s TimeCoverageRelationStatistics Valid=40599, Invalid=252623, Unknown=0, NotChecked=0, Total=293222 [2024-11-27 23:29:56,687 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 5112 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:56,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5112 Valid, 658 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-27 23:29:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2024-11-27 23:29:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 761. [2024-11-27 23:29:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.0789473684210527) internal successors, (820), 760 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 820 transitions. [2024-11-27 23:29:57,382 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 820 transitions. Word has length 95 [2024-11-27 23:29:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:57,382 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 820 transitions. [2024-11-27 23:29:57,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.046875) internal successors, (131), 64 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) [2024-11-27 23:29:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 820 transitions. [2024-11-27 23:29:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:29:57,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:57,383 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:57,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-27 23:29:57,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:57,584 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:57,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1213269495, now seen corresponding path program 45 times [2024-11-27 23:29:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:57,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360458907] [2024-11-27 23:29:57,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:29:57,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:57,624 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:29:57,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-27 23:29:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360458907] [2024-11-27 23:29:58,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360458907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120867714] [2024-11-27 23:29:58,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:29:58,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:58,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:58,063 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:58,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-27 23:29:58,286 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-27 23:29:58,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:58,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:29:58,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-27 23:29:58,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 19 proven. 162 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-27 23:29:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120867714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:59,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:59,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 33 [2024-11-27 23:29:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229362819] [2024-11-27 23:29:59,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:59,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 23:29:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:59,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 23:29:59,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:29:59,044 INFO L87 Difference]: Start difference. First operand 761 states and 820 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:00,843 INFO L93 Difference]: Finished difference Result 819 states and 881 transitions. [2024-11-27 23:30:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 23:30:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-27 23:30:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:00,846 INFO L225 Difference]: With dead ends: 819 [2024-11-27 23:30:00,846 INFO L226 Difference]: Without dead ends: 761 [2024-11-27 23:30:00,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 175 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=1594, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:30:00,847 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:00,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 378 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:30:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-27 23:30:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2024-11-27 23:30:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.0710526315789475) internal successors, (814), 760 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 814 transitions. [2024-11-27 23:30:01,539 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 814 transitions. Word has length 97 [2024-11-27 23:30:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:01,540 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 814 transitions. [2024-11-27 23:30:01,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 814 transitions. [2024-11-27 23:30:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:30:01,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:01,540 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:01,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-27 23:30:01,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 23:30:01,741 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:01,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -821198309, now seen corresponding path program 46 times [2024-11-27 23:30:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781958243] [2024-11-27 23:30:01,741 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:30:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:01,759 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:30:01,759 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781958243] [2024-11-27 23:30:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781958243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960296763] [2024-11-27 23:30:02,412 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:30:02,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:02,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:02,414 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:02,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-27 23:30:02,503 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:30:02,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:02,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-27 23:30:02,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:02,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960296763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:03,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 19 [2024-11-27 23:30:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433683293] [2024-11-27 23:30:03,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:30:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:03,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:30:03,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:30:03,191 INFO L87 Difference]: Start difference. First operand 761 states and 814 transitions. Second operand has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:04,648 INFO L93 Difference]: Finished difference Result 952 states and 1015 transitions. [2024-11-27 23:30:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:30:04,648 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 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 99 [2024-11-27 23:30:04,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:04,650 INFO L225 Difference]: With dead ends: 952 [2024-11-27 23:30:04,650 INFO L226 Difference]: Without dead ends: 917 [2024-11-27 23:30:04,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 180 SyntacticMatches, 33 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:30:04,651 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 12 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:04,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 829 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:30:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-27 23:30:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 786. [2024-11-27 23:30:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.0713375796178344) internal successors, (841), 785 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 841 transitions. [2024-11-27 23:30:05,410 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 841 transitions. Word has length 99 [2024-11-27 23:30:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:05,410 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 841 transitions. [2024-11-27 23:30:05,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.736842105263158) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 841 transitions. [2024-11-27 23:30:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 23:30:05,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:05,411 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:05,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-27 23:30:05,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 23:30:05,612 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:05,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash -722776809, now seen corresponding path program 47 times [2024-11-27 23:30:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614293380] [2024-11-27 23:30:05,612 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:30:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:05,664 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:30:05,665 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614293380] [2024-11-27 23:30:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614293380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658105090] [2024-11-27 23:30:06,367 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:30:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:06,369 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:06,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-27 23:30:07,525 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:30:07,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:07,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-27 23:30:07,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:08,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 450 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-27 23:30:10,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658105090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:10,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:10,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 82 [2024-11-27 23:30:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342167367] [2024-11-27 23:30:10,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:10,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-27 23:30:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:10,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-27 23:30:10,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=5681, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 23:30:10,047 INFO L87 Difference]: Start difference. First operand 786 states and 841 transitions. Second operand has 82 states, 82 states have (on average 2.1219512195121952) internal successors, (174), 82 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:54,775 INFO L93 Difference]: Finished difference Result 1641 states and 1741 transitions. [2024-11-27 23:30:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2024-11-27 23:30:54,775 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.1219512195121952) internal successors, (174), 82 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-27 23:30:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:54,778 INFO L225 Difference]: With dead ends: 1641 [2024-11-27 23:30:54,779 INFO L226 Difference]: Without dead ends: 1572 [2024-11-27 23:30:54,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35535 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=16206, Invalid=77736, Unknown=0, NotChecked=0, Total=93942 [2024-11-27 23:30:54,781 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 1418 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:54,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 897 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:30:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-27 23:30:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 817. [2024-11-27 23:30:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.0735294117647058) internal successors, (876), 816 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 876 transitions. [2024-11-27 23:30:55,605 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 876 transitions. Word has length 101 [2024-11-27 23:30:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:55,605 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 876 transitions. [2024-11-27 23:30:55,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.1219512195121952) internal successors, (174), 82 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:55,605 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 876 transitions. [2024-11-27 23:30:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-27 23:30:55,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:55,606 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:55,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-27 23:30:55,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-27 23:30:55,806 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:55,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 318604903, now seen corresponding path program 48 times [2024-11-27 23:30:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841678867] [2024-11-27 23:30:55,807 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:30:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:55,870 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-27 23:30:55,870 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 23:30:56,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841678867] [2024-11-27 23:30:56,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841678867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749366578] [2024-11-27 23:30:56,415 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:30:56,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:56,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:56,417 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:56,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-27 23:30:56,756 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-27 23:30:56,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:56,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 23:30:56,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 23:30:57,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 21 proven. 200 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-27 23:30:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749366578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:58,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:58,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 46 [2024-11-27 23:30:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177475150] [2024-11-27 23:30:58,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:58,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:30:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:58,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:30:58,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1759, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:30:58,190 INFO L87 Difference]: Start difference. First operand 817 states and 876 transitions. Second operand has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:06,764 INFO L93 Difference]: Finished difference Result 1148 states and 1220 transitions. [2024-11-27 23:31:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-27 23:31:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-27 23:31:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:06,768 INFO L225 Difference]: With dead ends: 1148 [2024-11-27 23:31:06,768 INFO L226 Difference]: Without dead ends: 1144 [2024-11-27 23:31:06,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1193, Invalid=6639, Unknown=0, NotChecked=0, Total=7832 [2024-11-27 23:31:06,769 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 256 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:06,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 211 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:31:06,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2024-11-27 23:31:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 756. [2024-11-27 23:31:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 1.0728476821192052) internal successors, (810), 755 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 810 transitions. [2024-11-27 23:31:07,492 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 810 transitions. Word has length 105 [2024-11-27 23:31:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:07,492 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 810 transitions. [2024-11-27 23:31:07,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 810 transitions. [2024-11-27 23:31:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-27 23:31:07,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:07,493 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:07,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:07,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:07,694 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:07,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash -916763177, now seen corresponding path program 49 times [2024-11-27 23:31:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126373092] [2024-11-27 23:31:07,694 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:31:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:08,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126373092] [2024-11-27 23:31:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126373092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994115654] [2024-11-27 23:31:08,520 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:31:08,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:08,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:08,521 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:08,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-27 23:31:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:08,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-27 23:31:08,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:08,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:09,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994115654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:09,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:09,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 21 [2024-11-27 23:31:09,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228454516] [2024-11-27 23:31:09,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:09,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:31:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:09,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:31:09,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:31:09,386 INFO L87 Difference]: Start difference. First operand 756 states and 810 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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) [2024-11-27 23:31:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:11,855 INFO L93 Difference]: Finished difference Result 1340 states and 1417 transitions. [2024-11-27 23:31:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:31:11,855 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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 105 [2024-11-27 23:31:11,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:11,858 INFO L225 Difference]: With dead ends: 1340 [2024-11-27 23:31:11,858 INFO L226 Difference]: Without dead ends: 1303 [2024-11-27 23:31:11,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 190 SyntacticMatches, 35 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:31:11,859 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:11,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 966 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:31:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-27 23:31:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 826. [2024-11-27 23:31:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 1.0787878787878789) internal successors, (890), 825 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 890 transitions. [2024-11-27 23:31:12,740 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 890 transitions. Word has length 105 [2024-11-27 23:31:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:12,740 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 890 transitions. [2024-11-27 23:31:12,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 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) [2024-11-27 23:31:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 890 transitions. [2024-11-27 23:31:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 23:31:12,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:12,741 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:12,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-27 23:31:12,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:12,941 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:12,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:12,942 INFO L85 PathProgramCache]: Analyzing trace with hash 743742419, now seen corresponding path program 50 times [2024-11-27 23:31:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762027077] [2024-11-27 23:31:12,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:31:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:12,972 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:31:12,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762027077] [2024-11-27 23:31:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762027077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:13,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590832234] [2024-11-27 23:31:13,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:31:13,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:13,717 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:13,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe67458-731a-4ef4-a650-f23f8cf945f0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-27 23:31:13,801 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:31:13,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:13,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-27 23:31:13,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:13,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-27 23:31:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590832234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:15,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:15,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 72 [2024-11-27 23:31:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13840715] [2024-11-27 23:31:15,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:15,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-27 23:31:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:15,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-27 23:31:15,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=4391, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:31:15,785 INFO L87 Difference]: Start difference. First operand 826 states and 890 transitions. Second operand has 72 states, 72 states have (on average 2.0416666666666665) internal successors, (147), 72 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:29,475 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 119 DAG size of output: 119 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)