./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.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_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/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_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/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_3c7c3904-c1f8-4607-b570-66b537affaad/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 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:35:10,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:35:10,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:35:10,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:35:10,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:35:10,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:35:10,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:35:10,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:35:10,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:35:10,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:35:10,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:35:10,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:35:10,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:35:10,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:35:10,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:35:10,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:35:10,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:35:10,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:35:10,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:35:10,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:35:10,129 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:35:10,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:35:10,129 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:35:10,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:35:10,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:35:10,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:35:10,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:35:10,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:35:10,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:35:10,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:35:10,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:35:10,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:35:10,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:35:10,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:35:10,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:35:10,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:35:10,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:35:10,133 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_3c7c3904-c1f8-4607-b570-66b537affaad/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 -> 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c [2024-11-28 03:35:10,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:35:10,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:35:10,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:35:10,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:35:10,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:35:10,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-11-28 03:35:13,722 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/data/a8f0aef4e/f2ae741102924b2db9c3f25681aa6dc5/FLAGb3e4551da [2024-11-28 03:35:14,084 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:35:14,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-11-28 03:35:14,095 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/data/a8f0aef4e/f2ae741102924b2db9c3f25681aa6dc5/FLAGb3e4551da [2024-11-28 03:35:14,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/data/a8f0aef4e/f2ae741102924b2db9c3f25681aa6dc5 [2024-11-28 03:35:14,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:35:14,126 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:35:14,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:35:14,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:35:14,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:35:14,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615ec61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14, skipping insertion in model container [2024-11-28 03:35:14,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:35:14,354 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_3c7c3904-c1f8-4607-b570-66b537affaad/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-28 03:35:14,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:35:14,387 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:35:14,402 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_3c7c3904-c1f8-4607-b570-66b537affaad/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c[318,331] [2024-11-28 03:35:14,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:35:14,429 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:35:14,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14 WrapperNode [2024-11-28 03:35:14,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:35:14,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:35:14,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:35:14,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:35:14,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,474 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-28 03:35:14,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:35:14,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:35:14,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:35:14,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:35:14,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,508 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:35:14,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,513 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:35:14,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:35:14,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:35:14,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:35:14,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (1/1) ... [2024-11-28 03:35:14,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:35:14,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:14,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:35:14,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:35:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:35:14,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:35:14,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:35:14,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:35:14,705 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:35:14,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:35:14,870 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-28 03:35:14,870 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:35:14,881 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:35:14,882 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:35:14,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:14 BoogieIcfgContainer [2024-11-28 03:35:14,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:35:14,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:35:14,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:35:14,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:35:14,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:35:14" (1/3) ... [2024-11-28 03:35:14,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706279bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:35:14, skipping insertion in model container [2024-11-28 03:35:14,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:14" (2/3) ... [2024-11-28 03:35:14,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706279bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:35:14, skipping insertion in model container [2024-11-28 03:35:14,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:35:14" (3/3) ... [2024-11-28 03:35:14,896 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.c [2024-11-28 03:35:14,916 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:35:14,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_3.c that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:35:15,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:35:15,020 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;@298415b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:35:15,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:35:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) [2024-11-28 03:35:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:35:15,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:15,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452760, now seen corresponding path program 1 times [2024-11-28 03:35:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416301383] [2024-11-28 03:35:15,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416301383] [2024-11-28 03:35:15,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416301383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:15,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:15,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:35:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604847801] [2024-11-28 03:35:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:15,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:35:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:15,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:35:15,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:35:15,263 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:15,279 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2024-11-28 03:35:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:35:15,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:35:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:15,289 INFO L225 Difference]: With dead ends: 24 [2024-11-28 03:35:15,290 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 03:35:15,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:35:15,299 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:15,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 03:35:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-28 03:35:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-11-28 03:35:15,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2024-11-28 03:35:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:15,343 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-28 03:35:15,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2024-11-28 03:35:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:35:15,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,345 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:15,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:35:15,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1810141071, now seen corresponding path program 1 times [2024-11-28 03:35:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565911931] [2024-11-28 03:35:15,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:15,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565911931] [2024-11-28 03:35:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565911931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:15,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:15,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:35:15,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362393720] [2024-11-28 03:35:15,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:15,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:35:15,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:15,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:35:15,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:35:15,485 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:15,528 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2024-11-28 03:35:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:35:15,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:35:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:15,529 INFO L225 Difference]: With dead ends: 20 [2024-11-28 03:35:15,530 INFO L226 Difference]: Without dead ends: 12 [2024-11-28 03:35:15,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:35:15,531 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:15,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-28 03:35:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-28 03:35:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-28 03:35:15,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-28 03:35:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:15,540 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-28 03:35:15,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-28 03:35:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:35:15,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,542 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:15,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:35:15,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2084884727, now seen corresponding path program 1 times [2024-11-28 03:35:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551754021] [2024-11-28 03:35:15,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:35:15,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551754021] [2024-11-28 03:35:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551754021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:35:15,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:35:15,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:35:15,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103325916] [2024-11-28 03:35:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:35:15,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:35:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:15,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:35:15,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:35:15,625 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-11-28 03:35:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:15,644 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-11-28 03:35:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:35:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2024-11-28 03:35:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:15,647 INFO L225 Difference]: With dead ends: 18 [2024-11-28 03:35:15,647 INFO L226 Difference]: Without dead ends: 14 [2024-11-28 03:35:15,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:35:15,648 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:15,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-28 03:35:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-28 03:35:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-28 03:35:15,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2024-11-28 03:35:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:15,656 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-28 03:35:15,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-11-28 03:35:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-28 03:35:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:35:15,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:15,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:35:15,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2114280429, now seen corresponding path program 1 times [2024-11-28 03:35:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819586393] [2024-11-28 03:35:15,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:35:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819586393] [2024-11-28 03:35:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819586393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562150622] [2024-11-28 03:35:15,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:15,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:15,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:15,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:35:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:15,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:35:15,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:35:15,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:35:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562150622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:16,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-28 03:35:16,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938922928] [2024-11-28 03:35:16,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:16,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:35:16,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:16,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:35:16,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:35:16,008 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:16,191 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2024-11-28 03:35:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:35:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:35:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:16,193 INFO L225 Difference]: With dead ends: 30 [2024-11-28 03:35:16,193 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 03:35:16,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:35:16,194 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:16,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:16,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 03:35:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-28 03:35:16,200 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) [2024-11-28 03:35:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-28 03:35:16,200 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2024-11-28 03:35:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:16,201 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-28 03:35:16,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-28 03:35:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 03:35:16,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:16,202 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:16,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:35:16,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:16,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:16,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1778859323, now seen corresponding path program 1 times [2024-11-28 03:35:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:16,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441627934] [2024-11-28 03:35:16,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:16,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:16,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441627934] [2024-11-28 03:35:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441627934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100675693] [2024-11-28 03:35:16,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:16,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:16,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:16,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:16,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:35:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:16,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:35:16,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:16,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100675693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:16,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:16,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 03:35:16,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605314654] [2024-11-28 03:35:16,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:16,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:35:16,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:16,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:35:16,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:16,862 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2024-11-28 03:35:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:16,942 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-28 03:35:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:35:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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 19 [2024-11-28 03:35:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:16,944 INFO L225 Difference]: With dead ends: 42 [2024-11-28 03:35:16,945 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 03:35:16,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:35:16,947 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:16,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 03:35:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 03:35:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-28 03:35:16,953 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2024-11-28 03:35:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:16,954 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-28 03:35:16,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 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) [2024-11-28 03:35:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-28 03:35:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:35:16,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:16,955 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:16,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:35:17,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:17,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:17,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1054255069, now seen corresponding path program 2 times [2024-11-28 03:35:17,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10852454] [2024-11-28 03:35:17,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:17,204 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:17,204 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10852454] [2024-11-28 03:35:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10852454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680793271] [2024-11-28 03:35:17,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:17,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:17,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:17,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:17,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:35:17,591 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:17,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:17,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:35:17,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:17,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:35:17,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680793271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:17,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 03:35:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007524783] [2024-11-28 03:35:17,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:17,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:35:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:17,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:35:17,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:35:17,952 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:18,046 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2024-11-28 03:35:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:35:18,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-28 03:35:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:18,049 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:35:18,049 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 03:35:18,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:35:18,051 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:18,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:35:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 03:35:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-28 03:35:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-28 03:35:18,065 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 27 [2024-11-28 03:35:18,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:18,066 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-28 03:35:18,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-28 03:35:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:35:18,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:18,067 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:18,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:18,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:35:18,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:18,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1429558771, now seen corresponding path program 3 times [2024-11-28 03:35:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611363298] [2024-11-28 03:35:18,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:18,307 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:35:18,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 03:35:18,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611363298] [2024-11-28 03:35:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611363298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962494524] [2024-11-28 03:35:18,405 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:35:18,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:18,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:18,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:35:18,478 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:35:18,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:18,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:35:18,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 03:35:18,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 03:35:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962494524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:18,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-28 03:35:18,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508937179] [2024-11-28 03:35:18,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:18,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:35:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:18,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:35:18,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:18,732 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:18,788 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-28 03:35:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:35:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:35:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:18,790 INFO L225 Difference]: With dead ends: 62 [2024-11-28 03:35:18,790 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 03:35:18,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:35:18,791 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:18,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 03:35:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-11-28 03:35:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-28 03:35:18,801 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 43 [2024-11-28 03:35:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:18,802 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-28 03:35:18,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-28 03:35:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:35:18,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:18,803 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:18,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:35:19,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:35:19,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:19,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -52393597, now seen corresponding path program 4 times [2024-11-28 03:35:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:19,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111127775] [2024-11-28 03:35:19,009 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:19,051 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:19,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 46 proven. 36 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-28 03:35:19,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111127775] [2024-11-28 03:35:19,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111127775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126542254] [2024-11-28 03:35:19,249 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:35:19,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:19,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:19,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:35:19,327 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:35:19,328 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:19,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:35:19,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:35:19,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:35:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126542254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:20,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 17] total 40 [2024-11-28 03:35:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759369603] [2024-11-28 03:35:20,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:20,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:35:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:20,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:35:20,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=1020, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:35:20,447 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:21,421 INFO L93 Difference]: Finished difference Result 115 states and 141 transitions. [2024-11-28 03:35:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 03:35:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-28 03:35:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:21,424 INFO L225 Difference]: With dead ends: 115 [2024-11-28 03:35:21,424 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:35:21,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1680, Invalid=3150, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:35:21,428 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:21,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:35:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2024-11-28 03:35:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 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) [2024-11-28 03:35:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2024-11-28 03:35:21,443 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 51 [2024-11-28 03:35:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:21,443 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2024-11-28 03:35:21,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.3) internal successors, (92), 40 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2024-11-28 03:35:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 03:35:21,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:21,446 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:21,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:35:21,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:21,650 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:21,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2065755257, now seen corresponding path program 5 times [2024-11-28 03:35:21,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425698023] [2024-11-28 03:35:21,651 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:21,760 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2024-11-28 03:35:21,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 03:35:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425698023] [2024-11-28 03:35:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425698023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567170196] [2024-11-28 03:35:23,572 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:35:23,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:23,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:23,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:23,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:35:23,707 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2024-11-28 03:35:23,708 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:23,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 03:35:23,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 03:35:23,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 93 proven. 930 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 03:35:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567170196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:25,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-11-28 03:35:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853586222] [2024-11-28 03:35:25,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:25,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 03:35:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:25,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 03:35:25,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:35:25,864 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:26,179 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2024-11-28 03:35:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 03:35:26,180 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-28 03:35:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:26,182 INFO L225 Difference]: With dead ends: 174 [2024-11-28 03:35:26,182 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 03:35:26,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:35:26,189 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:26,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:35:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 03:35:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-28 03:35:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2024-11-28 03:35:26,231 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 85 [2024-11-28 03:35:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:26,232 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2024-11-28 03:35:26,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2024-11-28 03:35:26,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 03:35:26,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:26,239 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:26,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:35:26,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:26,440 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:26,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash 863877831, now seen corresponding path program 6 times [2024-11-28 03:35:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:26,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213478467] [2024-11-28 03:35:26,441 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:26,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:26,494 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:35:26,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 310 proven. 4 refuted. 0 times theorem prover too weak. 3831 trivial. 0 not checked. [2024-11-28 03:35:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213478467] [2024-11-28 03:35:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213478467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610056820] [2024-11-28 03:35:26,560 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:35:26,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:26,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:26,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:35:26,677 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:35:26,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:26,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:35:26,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 310 proven. 4 refuted. 0 times theorem prover too weak. 3831 trivial. 0 not checked. [2024-11-28 03:35:26,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 310 proven. 4 refuted. 0 times theorem prover too weak. 3831 trivial. 0 not checked. [2024-11-28 03:35:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610056820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:26,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:35:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653099652] [2024-11-28 03:35:26,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:26,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:35:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:26,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:35:26,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:35:26,775 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:26,828 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2024-11-28 03:35:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:35:26,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-28 03:35:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:26,832 INFO L225 Difference]: With dead ends: 177 [2024-11-28 03:35:26,835 INFO L226 Difference]: Without dead ends: 158 [2024-11-28 03:35:26,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:35:26,837 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:26,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:35:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-28 03:35:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-28 03:35:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.0509554140127388) internal successors, (165), 157 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2024-11-28 03:35:26,868 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 149 [2024-11-28 03:35:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:26,869 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2024-11-28 03:35:26,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2024-11-28 03:35:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 03:35:26,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:26,874 INFO L218 NwaCegarLoop]: trace histogram [68, 62, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:26,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:35:27,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:35:27,075 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:27,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 507471271, now seen corresponding path program 7 times [2024-11-28 03:35:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350165364] [2024-11-28 03:35:27,075 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4673 backedges. 693 proven. 3906 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:35:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350165364] [2024-11-28 03:35:32,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350165364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:32,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137687311] [2024-11-28 03:35:32,345 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:35:32,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:32,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:32,347 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:32,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:35:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:32,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 03:35:32,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4673 backedges. 693 proven. 3906 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:35:32,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4673 backedges. 693 proven. 3906 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:35:38,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137687311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:38,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:38,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2024-11-28 03:35:38,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377866783] [2024-11-28 03:35:38,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:38,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-28 03:35:38,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:38,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-28 03:35:38,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 03:35:38,940 INFO L87 Difference]: Start difference. First operand 158 states and 165 transitions. Second operand has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:39,542 INFO L93 Difference]: Finished difference Result 318 states and 396 transitions. [2024-11-28 03:35:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-28 03:35:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-11-28 03:35:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:39,545 INFO L225 Difference]: With dead ends: 318 [2024-11-28 03:35:39,546 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 03:35:39,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 03:35:39,551 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:39,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:35:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 03:35:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-28 03:35:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.0280701754385966) internal successors, (293), 285 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 293 transitions. [2024-11-28 03:35:39,592 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 293 transitions. Word has length 157 [2024-11-28 03:35:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:39,592 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 293 transitions. [2024-11-28 03:35:39,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:35:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 293 transitions. [2024-11-28 03:35:39,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 03:35:39,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:39,601 INFO L218 NwaCegarLoop]: trace histogram [132, 126, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:35:39,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:39,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:35:39,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:39,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1576547367, now seen corresponding path program 8 times [2024-11-28 03:35:39,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:39,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036619254] [2024-11-28 03:35:39,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:39,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:40,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:40,069 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 17473 backedges. 1397 proven. 16002 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:35:54,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036619254] [2024-11-28 03:35:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036619254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529866486] [2024-11-28 03:35:54,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:35:54,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:54,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:54,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:35:54,996 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:35:54,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:35:55,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 254 conjuncts are in the unsatisfiable core [2024-11-28 03:35:55,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 17473 backedges. 1397 proven. 16002 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:35:55,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 17473 backedges. 1397 proven. 16002 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 03:36:17,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529866486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:17,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2024-11-28 03:36:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272245700] [2024-11-28 03:36:17,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:17,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2024-11-28 03:36:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:17,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2024-11-28 03:36:17,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-28 03:36:17,603 INFO L87 Difference]: Start difference. First operand 286 states and 293 transitions. Second operand has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:19,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:19,524 INFO L93 Difference]: Finished difference Result 574 states and 716 transitions. [2024-11-28 03:36:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2024-11-28 03:36:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2024-11-28 03:36:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:19,528 INFO L225 Difference]: With dead ends: 574 [2024-11-28 03:36:19,528 INFO L226 Difference]: Without dead ends: 542 [2024-11-28 03:36:19,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-28 03:36:19,532 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:19,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:36:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-28 03:36:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-28 03:36:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.0147874306839186) internal successors, (549), 541 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 549 transitions. [2024-11-28 03:36:19,585 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 549 transitions. Word has length 285 [2024-11-28 03:36:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:19,586 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 549 transitions. [2024-11-28 03:36:19,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 549 transitions. [2024-11-28 03:36:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-11-28 03:36:19,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:19,598 INFO L218 NwaCegarLoop]: trace histogram [260, 254, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:19,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:36:19,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:19,798 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:19,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1798426919, now seen corresponding path program 9 times [2024-11-28 03:36:19,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:19,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889170204] [2024-11-28 03:36:19,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:36:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:19,861 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:36:19,861 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 67649 backedges. 2830 proven. 49 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 03:36:19,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889170204] [2024-11-28 03:36:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889170204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463069876] [2024-11-28 03:36:19,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:36:19,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:19,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:19,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:19,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:36:20,212 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:36:20,213 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:20,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:36:20,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 67649 backedges. 2830 proven. 49 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 03:36:20,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 67649 backedges. 2830 proven. 49 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 03:36:21,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463069876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:21,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-28 03:36:21,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571437181] [2024-11-28 03:36:21,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:21,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:36:21,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:21,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:36:21,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:36:21,640 INFO L87 Difference]: Start difference. First operand 542 states and 549 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) [2024-11-28 03:36:21,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:21,744 INFO L93 Difference]: Finished difference Result 606 states and 642 transitions. [2024-11-28 03:36:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:36:21,744 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 541 [2024-11-28 03:36:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:21,748 INFO L225 Difference]: With dead ends: 606 [2024-11-28 03:36:21,748 INFO L226 Difference]: Without dead ends: 602 [2024-11-28 03:36:21,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1074 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:36:21,749 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:21,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 63 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:36:21,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-28 03:36:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 560. [2024-11-28 03:36:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.0143112701252237) internal successors, (567), 559 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:36:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 567 transitions. [2024-11-28 03:36:21,788 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 567 transitions. Word has length 541 [2024-11-28 03:36:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:21,789 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 567 transitions. [2024-11-28 03:36:21,789 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) [2024-11-28 03:36:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 567 transitions. [2024-11-28 03:36:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2024-11-28 03:36:21,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:21,802 INFO L218 NwaCegarLoop]: trace histogram [260, 254, 16, 16, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:21,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:36:22,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:22,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:22,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1812359765, now seen corresponding path program 10 times [2024-11-28 03:36:22,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:22,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958072251] [2024-11-28 03:36:22,003 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:22,133 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:22,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 67856 backedges. 2830 proven. 256 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 03:36:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958072251] [2024-11-28 03:36:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958072251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525626054] [2024-11-28 03:36:23,160 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:36:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:23,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:23,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:23,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:36:23,617 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:36:23,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:36:23,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 510 conjuncts are in the unsatisfiable core [2024-11-28 03:36:23,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 67856 backedges. 2805 proven. 64770 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-28 03:36:52,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 67856 backedges. 2805 proven. 64770 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-28 03:38:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525626054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:15,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 257, 257] total 532 [2024-11-28 03:38:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504280331] [2024-11-28 03:38:15,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:15,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 532 states [2024-11-28 03:38:15,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:15,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 532 interpolants. [2024-11-28 03:38:15,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131046, Invalid=151446, Unknown=0, NotChecked=0, Total=282492 [2024-11-28 03:38:15,801 INFO L87 Difference]: Start difference. First operand 560 states and 567 transitions. Second operand has 532 states, 532 states have (on average 2.030075187969925) internal successors, (1080), 532 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:15,082 INFO L93 Difference]: Finished difference Result 1167 states and 1459 transitions. [2024-11-28 03:40:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 532 states. [2024-11-28 03:40:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 532 states, 532 states have (on average 2.030075187969925) internal successors, (1080), 532 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 559 [2024-11-28 03:40:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:15,089 INFO L225 Difference]: With dead ends: 1167 [2024-11-28 03:40:15,089 INFO L226 Difference]: Without dead ends: 1117 [2024-11-28 03:40:15,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 1040 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174322 ImplicationChecksByTransitivity, 216.3s TimeCoverageRelationStatistics Valid=399306, Invalid=685416, Unknown=0, NotChecked=0, Total=1084722 [2024-11-28 03:40:15,121 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:15,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:40:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2024-11-28 03:40:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1074. [2024-11-28 03:40:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 1.0074557315936625) internal successors, (1081), 1073 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1081 transitions. [2024-11-28 03:40:15,216 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1081 transitions. Word has length 559 [2024-11-28 03:40:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:15,217 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1081 transitions. [2024-11-28 03:40:15,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 532 states, 532 states have (on average 2.030075187969925) internal successors, (1080), 532 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1081 transitions. [2024-11-28 03:40:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2024-11-28 03:40:15,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:15,228 INFO L218 NwaCegarLoop]: trace histogram [516, 510, 17, 17, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:15,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:40:15,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:40:15,428 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:15,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:15,429 INFO L85 PathProgramCache]: Analyzing trace with hash -369697777, now seen corresponding path program 11 times [2024-11-28 03:40:15,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:15,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279392645] [2024-11-28 03:40:15,429 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:40:15,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:19,527 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 517 check-sat command(s) [2024-11-28 03:40:19,527 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 266545 backedges. 5621 proven. 260610 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-28 03:46:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279392645] [2024-11-28 03:46:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279392645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013171669] [2024-11-28 03:46:22,559 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:46:22,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:22,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:22,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:22,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c7c3904-c1f8-4607-b570-66b537affaad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:46:29,753 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 517 check-sat command(s) [2024-11-28 03:46:29,753 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:29,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 1022 conjuncts are in the unsatisfiable core [2024-11-28 03:46:29,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 266545 backedges. 5621 proven. 260610 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-28 03:46:31,433 INFO L312 TraceCheckSpWp]: Computing backward predicates...